Laptop Repair Database

www.Hackyday.com

Repair DatabaseSome Laptops We've fixed Since January 2006

Thinkpad T23 1S26472TA99ZT0A0 1S26472TA99ZR8X9 Password removal

Thinkpad R31 1S2656E0MAKV42CW Beeping but Win2k loading fine, faulty ultrabay sensor switch, fixed.

Lenovo Media Center S9010M P4/2.8G/HT, SS02962586, Xp not loading, cleared qq?? virus, defrag c drive, starting but stuck in logging on Administrator (had admin password, autologon with blank p/w!!!), removed admin's password, then used control userpasswords2 cmd to set require p/w on all users, done.

Dell D505 Service Tag F846F1S P/W removal. 24lC04 under pcmcia socket.

Satellite 17?0, R20250, reported scree's dull, dark screen, broken LCD left bracket, LCD loose caused one backlight wire to break, dismantled LCD backlight assy, resoldered wire back to tip of tube(note when testing, tube's not on untill data cable's connected back to LCD!!!), replaced LCD bracket, also power switch & power strip assy.Satellite 1730, R20256, LCD lef hand side dim, dismantled LCD, resoldered backlight tube, LCD fine, done.

ASUS widescreen LCD Samsung LTN154P1-L02,AS 15.4" WSXGA+'ZERO',NF1P550234LD0009, tube 340mmx2mmOD, tube failed, ordered the tube, replaced tube, cut both ends, extremely difficult to put it back together, about 5 hrs and one broken tube later, done.

m50fw040, M306K9FCLRP

Acer TravelMate C110TCi Tablet LXT270E01832300332M000, power socket broken, but won't work with the docking station DC source, can be fixed by jumping the SMB1040CT diode input pins. Socket hard to find.

PowerBook G4 model no. M8407 s/n 0510, can't load OSx, the OS disk is deffective, CD drive reads a Linux live CD fine.

Compaq N610cP200X430DC250, s/n 7E37KT8ZH01G, no description, only "Screen Cracked" on one label, LCD panel is not the original one, will need the origianl type to work.

Toshiba TE2300, Model: PT230A-0048Z, s/n 73033858S, P/W removal, machine was dismantled before as a lot of screws were missing, fan connector nearly torn off the mobo when first opened up, laptop fails to work after putting it back together, fault caused by power PCB connector's connections broken when it was taken off the mobo? fixed the fan connection, 2 hrs spent on tracking the broken connection but no luck.

NEC Packard Bell EasyNote M5-262DW, Model MIT-GHA20, s/n 286500380129, screen dark, but image is there, dismantled LCD panel, tested backlight tube and inverter input(15, 5, 2.8)fine, faulty inverter, replaced and going fine.

IBM A20M P/W removal1S26284SA99BFW361S26284SA99BFY85 Screen no go, screen switch's faulty, disable the switch, removed 12Gb HDD's P/W only.

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IBM A22M P/W removal1S2628TSA99FZNPW1S2628TSA99FZPAA1S2628TSA995AA07 20Gb HDD P/W removed also.1S2628TSA99FZNPG

Toshiba TE2000 PT200A-0188V s/n 22016234V, won't start, dc supply showed started then current dropped off, found bad connections on mainboard, resoldered & fixed, laptop works fine.

Toshiba Satellite M35X-S349, p/n PSA72U-00W00XB, s/n Y4483143K, white screen sometimes. Advice from previous service-faulty LCD scree board? Dismantled laptop, only to find it's integrated on the mainboard(mouse pad cable socket on mainboard and one cable track were damaged last time when it's serviced, causing laptop failed to work when puting the laptop back), "white screen" happened twice, the first time it's fixed by pushing Fn+F5, second time it's right after coming out from standby, also it's never happened when running BurnInTest so it's not the mainboard's fault, just the connection between mainboard/LCD. Applied contact enhancer to the socket/data plug, laptop tested for 3 days, no fault found.

Compaq N1020V PP2150N s/n 9X33LDLZC3VO, not picking up hdd, found two fault, another one is won't boot CD if the battery's removed screen went blank. Dismantled laptop reseated HDD connector assy, checked CD connection's fine, can't fix the second fault, HDD & CD go fine when battery is there.

Acer TravelMate 213TXV, Model 2008, s/n 9140R01X4314800C0FK000, repaired broken power socket, FDD no go, removed foreign object in it, still not reading. HDD has no OS, CD booting fine.

IBM T23 1S26472TA99ZR8X9, 14" LCD backlight tube replacement.

Compaq Armada E500, 1J06DNM4957T, p/w removal.

IBM A20M 1S26284SA9797N5L, p/w removal.

IBM R50 1S18296DM99T8792, no turning on, drawing 0.3A@16V, found one FET shutdown, 1cmx1cm area burnt out & liquid mark/softdrink? not worth repairing.

Toshiba Satellite SA60-672, Model PSA60E-02Z02P7Y, I74140060QSSA6002Z02P7YD, xp shutdown sometimes, cleaned CPU fan, fixed.

Compaq Presario 900 Series PP2140, P921APA140X420VC12E 1V2CKSBZ430L, faint image. Another inverter, still the same, new tube, same. Image brightness changed as screen opene/closed, repaired broken inverter cable, lcd working fine.

LCD screen Philips model: 15L5082Q/22C, s/n TY009948067614, buzzing. Buzzing & flickering when turned on, traced fault to 2 x capacitors, replaced one 150uf/400V and one 1800uf/25V (with a 2200uf/25V). Going fine.

E500 Battery 6N1204J3JW6967, replaced cells and reprogrammed 24C01 after first cycle being too short.

Sony Z505GATH, modelPCG-532D, 28314170 7600697. No go, no light at all, no 3.3 to the power switch. Traced fault to dry joints on LT1628 & AD3421 ICs, resoldered the pins. Laptop going fine, vibration tested fine.

IBM T21 1S2648EDA99VR184, blank screen, replaced LCD ribon cable. Put contact enhancer in to connectors both ends.

Prestigio P4 2.66GHz, model N243S8 PZXN243S933200108. Not turning on, no current at all. Found CPU power circuit 6 xIRF7811 short circuit, replaced the FETs, still no go but drawing 200mA current, no 3.3 & 5V, checked the power section, replaced faulty resistor 10ohm to the Max1632 +V rail, laptop started up but failed to load XP, shutdown. Removed heat transfer pad that was added to the heatsink, used silicone paste only. Laptop running > 6 hrs fine.

IBM T23 2647-8NA 99-F3L3P(no LCD panel) and 2647-8NA 99-F3L3M, P/W removal.

vpr Matrix, series 110, Q02N30185A1771N/SVID03808299FF, not turning on at all. dismantled and found mainboard fine, turned on with external monitor but failed when LCD connected, replaced the LCD assy, going but shutdown sometimes, added contact enhancer to CPU socket and put silicone on CPU heatsink. laptop works fine.

Toshiba TE2100 Model PT210A-006P9 72015595V, dark screen & freez up sometimes. LCD problem was traced to cable in laptop, 5v to inverter bad connection, attached a wire socket to socket, screen fixed. Second fault CPU overheating, redo cpu heatsink, still not stable. It's display IC overheating, not repairable by us.

Compaq 5017 LCD display, SVID03811230AE, turned on fine for a while then backlight disappeared, found inverter switch off after a few mins, connected a resistor to control IC to fix it. Backlight on all the time.

HP 1530 LCD display, model PE1236 s/n CNK3441203, backlights no go, fix inverter's fault.

IBM T22 1S26478EA99RVHTL, white screen, traced fault to a broken resistor on mainboard, replaced it and LCD's fine.

IBM R31 1S2656ABMAKV6L5G, p/w removal.

IBM T23 1S26478NA99L3L, p/w removal. won't start with PCMCIA wireless card inserted.

NEC Packard Bell Easynote F5287 296613370122%, no power, loose power socket, resolder & glue socket.

NEC VERSA APTITUDE, s/n 560, was told dead battery, check battery fine, repair charger circuit. Laptop charging and battery going fine.

IBM T23 1S26478MA99F7C6Z, 0175 CRC error, clear corrupted eeprom, laptop works fine.

IBM T23 1S26472TA99ZP5N7, 0175 CRC error, clear corrupted eeprom, laptop works fine.

IBM 600X 26454EA99RM480, P/W removal. Replaced dead CMOS battery cr2025 also.

Compaq Presario 1500 Series PP2140, P1525USP240P540WC51E, s/n 9X2AKQFZBlEJ, SVID0178677D4B, new battery not charging. Fixed DC charger board, battery charging but only to 16%, recalibrated battery,will go up 100% but

won't last long. Finally found battery is a series CM2081 for CM2080 series laptops!

Dell Latitude C640, J63W7lS, P4 2GHz, not turning on, found standby linear regulator overheated/overloaded, fault caused by a P/FET shorted G/S pins. Replaced the FET, laptop going fine. Upgraded bios to A10

Dell Latitude C640, CSYT6lS, P4 1.8GHz, corrupted BIOS chip, used A08/10... copying bios from another C640, coming up BIOS and keyboard controller ROM versions mismatch and won't go further. As the original bios version is not known, tried a few times before it worked. Upgraded bios to A10.

IBM T23, 1S26474PA99GXG4G, p/w removal

Compaq EVO N610C, PP2040, 470050-421/CNU3470GNC, a few problems with battery and power supply including turning off when the AC adapter plugged in after starting up with the battery, tested working fine with bench top supply and 18.5V 2.7A adapter it specifies.

IBM 600X 26454EA99RM480, could not boot from CD, file error 4. checked CD's fine on a second laptop, and connecton's fine, later disable onboard RAM and it works fine.

Thinkpad R32, 1S2658CFMAKVPN7B, password removal.

Dell C400, PP03L, tag HPLG6lS, password removal, 24C02.

Thinkpad T22 P3900, 1S26478EA99M8AV3, not fire up sometimes, found it posted to RAM and stoped, checked RAM OK, put it in the other slot. Works fine. HDD loading XP fine.

Thinkpad T23, 1S26472TA99ZP9T6, didn't post, tried RAM in other slot, no go, later found RAM faulty? works with aPC133 RAM stick. Loaded Win thru CD OK.

Compaq N1015VA153X430VC250, 470046-545, 1V2BKSBZX13N, Dark screen, inverter confirmed working, checked voltage fine first then missing 18.5V, found cable wires broken, OK once repaired.

Dell C640 tag 5X2J7lS, P4 2.2GHz, didn't start, drew no current, found connection between power input inductor & first power FET broken(had resistance continuity but not voltage's). Wired the two points. Laptop works fine.

Tos Satellite 1410 PS141A-0502YP 13046599P, Battery problem, orange light, not charging, fixed charging circuit, battery charged OK but shutdown soon after turning on. Tested laptop with another battery fine. BATTERY'S FAULTY ALSO

IBM T23 1S26478NA99F3L4N password removal

Toshiba TE2100 S/N 601, green screen, found excessive solder on one connector socket, removed the solder, still green, traced fault to a open circuit inductor. Replaced the whole adapter board. Screen works fine, k/b no go, hdd no go.

IBM R32 1S2658CFMAKVPN81 Password removal

Tos TE2100 62020861V unstable green screen, resoldered connector socket. Screen works fine. Laptops started up fine.

Compaq Evo N610c PP2040, CNU3420F34, 470059-170, turn on but not POST, found CPU running, dismantled laptop, reseat RAM, going & running WinPE from CD drive O.K.

Dell Latitude C800, 2DZY4lS, turn on a few seconds then off, traced fault to CPU power supply IC, no PGood, replaced the IC, starting & running win2k on HDD fine.

Toshiba Tecra9000, PT900A-01TZ7, X1013590J... beyond repair

Dell C610, tag: FJCC51S, password removal.

Dell Inspiron 6000, P4M 1.6G HGS2P71, short circuit w/o turning on, traced fault to cpu p/s irf7821, replaced & still won't start, shorted or went for a few seconds when power up, checked and replaced Max1999, later found another intermittant low-side power FET, works fine once replaced.

Thinkpad R31: Found system had no 5V & 3.3V supply, checked power IC MAX1631 looked normal but wouldn't work, tried another IC, same, added a bypass capacity to 1631's VL, 5V & 3.3V going. Laptop starts up fine.

Compaq N1020V, Laptop won't boot from harddrive but booting from CD fine, HDD not recognized by a desktop PC, put a good HDD into laptop, same. Dismantled laptop, traced fault to connection between mainboard & HDD PCB, fixed the connection, deleted HDD partition and redone partition, formatted with win98 DOS fine, checkdsk fine.

TravelMate 250: No power up, showing shorted circuit (8V, >5A), traced fault to MAX1999 section, replaced a shorted power FET, working fine, running over 5 hrs O.K.

Toshiba TE2100: no startup, worked on power module connectors, also LCD connector on graphic card. HDD noisy and laptop won't boot with HDD attached.

Packard Bell Ipower 5542: Repair LCD fault, checked fault caused by inverter, ordered inverter & replaced, screen works fine. Rebuild battery 11.1V 6600mAH 12 cells. Found laptop was not charging the battery, traced fault to battery controller IC 1772, replaced the IC, battery charged fine. (Note: two remaining faults, can not tighten bottom screws & CPU fan screws, bottom ones cause faulty keyboard, fan screws cause laptop to shutdown!!! PCB too thin/soft?)

PC Company Green 731: Could not start, AMI code 2D, suspect RAM fault, dismantled laptop to resolder RAM slots, fixed but same fault 3 days later, found pins still there, soldered again. Working for nearly a week fine.

Compaq Presario 2200, model 2252AP, celeron M, 18.5V 3.5A adapter, not power up loose power connector, dismantled lapotp found socket pin soldering fine, just the positive pin inside the socket loose, re-solder pin, power up fine.

dell latitude c600 pp01L tag 57dg31s removed 24c02 to get admin p/w

IBM Thinkpad T23 Type 2647-4pa s/n 99-GXG2R 02/06 found loose inductor on the back of pcb, soldere it properly. Testedlaptop working fine

Toshiba Portege 3505 notebook p/n PP350U-0078DE s/n 23058227puLCD LTM12C328T/VF2095P03WACOM digitizer unit SU-010-A01A G83C0001C2103DNK00131713 strip not responding to stylu, found loose cable inside lcd assy

HP Compaq nx7010 laptop PP2080S/N: CND5050J7CScreen won't work with new ordered inverter, checked inverter's missing one turn on signal, wired it to turned on the screen but it failed after a few minutes.Used original inverter, works fine.

Toshiba Portege 3020CT password removal, bios ver 7.7, can be done after the red led turn off.

Toshiba Portege 3020CT password removal, bios ver 8.0, hard to remove

TravelMate 210 Series 210 laptop TER00029055106412, found no LCD loose connection, just laptop not booting, coming up file's missing, checked harddrive fine, tried a known good HDD, still the same, memory test reported RAM fault, soldered slots, cleaned RAM connectors. Running XP overnight fine.

IBM Thinkpad T23 TYPE: 1S2647JA799BMWP8 small current when started, cpu no voltage, checked CPU power supply IC had no ON signal, put ON signal there, CPU power ok but still won't boot, traced fault to dry joint inductor next to North Bridge. Fixed.

IBM Thinkpad R31 Type: 1S2656E5MAKV7N5W, password removal

IBM 600X 26454EA99RM480, could not boot from CD, file error 4. checked CD's fine on a second laptop, and connecton's fine, later disable onboard RAM and it works fine. Worked on another 600x with not seeing harddrive problem, connections OK so it's control circuit's fault.

Thinkpad laptop R32, 1S2658CFMAKVPN7B, password removal.



IBM A31 Type 2652-C3A S/N: 99DFGMC, dark screen, checked inverter has output, replaced the 15" backlight tube, screen's fine.



IBM T23 2647-8NA 99-F3L3P(no LCD panel) and 2647-8NA 99-F3L3M, password removal.


Dell L400 Service Tag: FB8161S power meter show startup for a few seconds then stoped, check memory, was memory fault, worked with PC133 RAM. HDD passworded.

Apple iBook G4 Model A1055 24V 1.875A. Not starting with a power supply. Dismantled laptop to find no voltage inside, wired 24V supply after the DC socket and it started fine.



IBM T23 laptop 1S26472TA99ZP5N7, 0175 CRC error, clear corrupted eeprom, laptop works fine.


Toshiba TE2000, model # PT200A-00JYV, S/N 32019513V Not powering up (no stable 3.3 5V), current indicating starting then fall back.Check power curcuit, soldered suspected dry joints, tested running WinPE fine.

Toshiba TE2000, model # PT200A-00JYV, S/N 32016670VNot powering up (no stable 3.3 5V), current indicating starting then fall back.Check power curcuit, soldered suspected dry joints, tested running WinPE fine.

Dell Latitude LS Model PP01S, DS/N TW020FCR128001140599 Service Tag: JVDR21S, White screen, dismantled laptop, voltage to LCD fine, try to swap screen with the L400, no go, dismantled LCD to reseat cable, going O.K

Compaq N1015VA153X430VC250, 470046-545, 1V2BKSBZX13N, blank screen, checked inverter cable as it's fixed last time, no fault found. Turned on laptop, didn't POST at all, drawing >4A current, checked CPU running, traced fault to one hot RAM, removed the RAM stick, current's back to normal, laptop running fine.

Dell C640, 319371S, Password removal.

Toshiba 1410 PS141A-0502YP, 13046613P, battery no go, found battery faulty, good battery won't work all the time, found intermittant shorting pin, removed it, battery works fine.

ASUS widescreen LCD Samsung LTN154P1-L02,AS 15.4" WSXGA+'ZERO',NF1P550234LD0009, tube 340mmx2mmOD, tube failed, ordered the tube, replaced tube, cut both ends, extremely difficult to put it back together.


Acer TravelMate 213TXV, Model 2008, s/n 9140R01X4314800C0FK000, repaired broken power socket, FDD no go, removed foreign object, still not reading. HDD has no OS, CD booting fine.

LCD display Philips model: 15L5082Q/22C, s/n TY009948067614, buzzing. Buzzing & flickering when turned on, traced fault to 2 x capacitors, replaced one 150uf/400V and one 1800uf/25V (with a 2200uf/25V). Going fine.

Toshiba Satellite laptop 1410 PS141A-0502YP13046599P, Battery problem, orange light, not charging, fixed charging circuit, battery charged OK but shutdown soon after turning on. Tested laptop with another battery fine. BATTERY'S FAULTY ALSO



Dell Latitude C640, CSYT61S, P4 1.8GHz, corrupted BIOS chip, used A08/10... copying bios from another C640, coming up BIOS and keyboard controller ROM versions mismatch and won't go further. As the original bios version is not known, tried a few times before it worked. Upgraded bios to A10.

Toshiba 4600 PS460A-09DZT 81013755J no boot, dismantled laptop to check voltages on main board, no fault found, reset all connectors, laptop works fine, fixed screen switch.

HP Compaq Presario R3000 laptop, CND442004K, no AC supply, repair loose power socket.

Compaq evo N400C series PP2070 1J26JMWZX21G, password removal, disconnected cmos battery to clear password. Cleaned PCB corrosion.

IBM thinkpad T30, 2366-92M 99-LCW91, password removal.

IBM thinkpad T40, 1S237372M99RT444, password removal.

Rebuild vpr Matrix VPRN-BA200 14.8V 4400mAh battery, reset gas gauge. Tested charging fine.

Toshiba TE2100 video board, soldered cable connector pins.

Dell Latitude C640, 4RYQ61S, not power up, dismantled motherboard to replace U45, board works fine but had password, removed password. Tested started CD based WinPE fine, hdd's online also.

Dell C600, DBXR51S, removed password. Tested started CD based WinPE fine, hdd's online also.

Dell inspiron 5160, F09CJ61, not charging & power on, traced fault to power circuit, resoldered ICs, battery charging & laptop turns on fine, running CD WinPE fine.

Clevo D220S NCD22S2J00099, password removal

Clevo D400S NCD40S3F00058 password removal

IBM Thinkpad T30, 1S236681M99LLF16, Fixed RAM slot problem, it's worked on before, a few tracks broken.

Toshiba Tecra A4 PTA40A-0U9004, password removal. SMSC LPC47N249-AAQ

toshiba satellite A60 Z4020817Q password removel

Toshiba Portege 3500, PP350A-002GJP, 13060682P, password removal.

Dell 17" widescreen Inspiron 9300 m/b HG58891, not turning on, traced fault to power on circuit, fixed, turning on fine, unable to check further using temp heatsink.

Dell 17" widescreen Inspiron 9300 m/b HG58891, power on/off right away, current small, found power on when the graphic card is removed, later cleaned corroded connectors on graphic card, laptop works fine overnight.

Toshiba A70 PSA70A-0W700W, X4364296K, laptop overheat, traced fault to CPU & fan assy.

Toshiba Tecra 9100, worked on a few with sound issues, most of the laptops were worked on before, broken tracks on mainboard, beyond repair.

Dell 17" Wide screen, Inspiron 6400/E1505, DXJVHB1, power on then off, checked cpu power circuit, found a shorted capacitor, removed the capacitor, power stay on fine, smoke coming out when tested with the provided graphic card, graphic card's faulty, without the card it powers up fine and flashing orange indicating a low battery.

Compaq laptop NX9010, CNX9010UC200X420DCN25P, CNF32126L6, Password removal

Toshiba, speaker problem, found volum knob faulty, replaced but the knob is not for this model. Removed knob, to be put on

HP Pavilion ZV5000 CND4320JQJ, PD131PA#ABG, not starting, replaced diode in the power inline circuit. (posted 12/02/07)

Compaq M2000, model M2045AP, CNF501BWC, Lsass error with ‘Security Accounts manager Initialization fails’, repaired corrupted register files, XP running fine, check disk done, no fault found.

HP Compaq NX6120, CNU518*9H2, Freezes when using AC adapter, very slow, lot of dust in CPU heatsink, cleaned. Tested CPU, RAM fine... NOT FIXED in set time.

HP Pavilion ZV5000, PF119UA#ABA, CND4260BS3, 18.5V 6.5A, not power up, replaced fault power diode. Charging fine, running Win PE > 12 hrs fine.

HP Compaq nc6000, CNU4050F35,DP894A#ABU, 18.5V 3.5A, liquid damage, no power up, found no liquid appearance, power on intermittently, power board touching heatsink, once separated, turned on fine.

Toshiba Satellite M40, PSM43A-11000H, 85094718Q, 19V, 3.42A, no power on, short circuit, 2V, >5A, traced fault to two short circuit capacitors and a power fet, worked fine once replaced.

Latitude C640, DWM771S, would not turn on, short circuit (5V, >5A), repaired CPU power circuit fault, laptop going fine, CD & battery bays fine, ran Win PE fine > 12 hrs.

HP Pavilion DV1000, CNF507351V, not power up, found open PL1 in power circuit, replaced, supply voltage dropped to 3V, current >5A, found 2 short circuit capacitors, replaced, laptop running fine, can't charge battery as battery is faulty?

Thinkpad T40, 1S237375M99RD636, not power up from AC adapter, replaced open circuit component in power circuit, T40 running fine.

HP Compaq NC4000 18.5V 3.5A, CNU34204X0, no boot at all, small current, repaired CPU power circuit. Laptop running fine.

NX9040, CNF4441C79, won't power on, battery power ok, found Vmain = 11-18.5V fluctuation, caused by power input circuit control signal's 6V - 18.5V movement (6V normal), found a dry joint in atransistor pin, soldered and Vmain=18.5 not changing. Laptop going, running overnight fine.

TP R51, 1S2887GVM99NYDW0, not turning on, traced fault to Max 1631 and its BST diodes, replaced them, laptop going fine, running > 6 hrs

Toshiba M30X-124, Z4345206K, power on but not starting up, test card show CPU NOT RESET, CPU had no power, checked CPU power FETs fine, replaced CPU power supplier IC, work overnight fine.

Toshiba Satellite PSP26A-0J2R9, won't power on, found bubbled south bridge IC, faulty mainboard K000014040 caused by damaged USB sockets!!!

Dell Inspiron 510m tag 32FWF1S 19.5V 4.62A pa-10 or pa-12 adapter. Won't power up by and trip AC adapter, runnig off battery fine, found short circuit capacitor in AC power circuit, replace it and laptop fine.

IBM Thinkpad R31 2656-ABM, won't power up, bench power supply showed current went up to idle ~50ma and back to zero, Tested Max1631 pins 3.3V and 5V for <1 sec then back to 0V, replaced 1631, checked its Hi/Low FETs, fine. Found USB socket in the back was damaged, replaced the socket, laptop fine.

HP 1730 LCD 17" monitor, Dead monitor, buzzing noise, fixed faulty power supply.

© 2007 Open.Net Limited

Repair DatabaseSome Laptops We've fixed Since January 2006

Thinkpad T23 1S26472TA99ZT0A0 1S26472TA99ZR8X9 Password removal


Lenovo Media Center S9010M P4/2.8G/HT, SS02962586, Xp not loading, cleared qq?? virus, defrag c drive, starting but stuck in logging on Administrator (had admin password, autologon with blank p/w!!!), removed admin's password, then used control userpasswords2 cmd to set require p/w on all users, done.

Dell D505 Service Tag F846F1S P/W removal. 24lC04 under pcmcia socket.

Satellite 17?0, R20250, reported scree's dull, dark screen, broken LCD left bracket, LCD loose caused one backlight wire to break, dismantled LCD backlight assy, resoldered wire back to tip of tube(note when testing, tube's not on untill data cable's connected back to LCD!!!), replaced LCD bracket, also power switch & power strip assy.Satellite 1730, R20256, LCD lef hand side dim, dismantled LCD, resoldered backlight tube, LCD fine, done.

ASUS widescreen LCD Samsung LTN154P1-L02,AS 15.4" WSXGA+'ZERO',NF1P550234LD0009, tube 340mmx2mmOD, tube failed, ordered the tube, replaced tube, cut both ends, extremely difficult to put it back together, about 5 hrs and one broken tube later, done.

m50fw040, M306K9FCLRP

Acer TravelMate C110TCi Tablet LXT270E01832300332M000, power socket broken, but won't work with the docking station DC source, can be fixed by jumping the SMB1040CT diode input pins. Socket hard to find.


Compaq N610cP200X430DC250, s/n 7E37KT8ZH01G, no description, only "Screen Cracked" on one label, LCD panel is not the original one, will need the origianl type to work.

Toshiba TE2300, Model: PT230A-0048Z, s/n 73033858S, P/W removal, machine was dismantled before as a lot of screws were missing, fan connector nearly torn off the mobo when first opened up, laptop fails to work after putting it back together, fault caused by power PCB connector's connections broken when it was taken off the mobo? fixed the fan connection, 2 hrs spent on tracking the broken connection but no luck.

NEC Packard Bell EasyNote M5-262DW, Model MIT-GHA20, s/n 286500380129, screen dark, but image is there, dismantled LCD panel, tested backlight tube and inverter input(15, 5, 2.8)fine, faulty inverter, replaced and going fine.

IBM A20M P/W removal1S26284SA99BFW361S26284SA99BFY85 Screen no go, screen switch's faulty, disable the switch, removed 12Gb HDD's P/W only.

IBM A22M P/W removal1S2628TSA99FZNPW1S2628TSA99FZPAA1S2628TSA995AA07 20Gb HDD P/W removed also.1S2628TSA99FZNPG

Toshiba TE2000 PT200A-0188V s/n 22016234V, won't start, dc supply showed started then current dropped off, found bad connections on mainboard, resoldered & fixed, laptop works fine.

Toshiba Satellite M35X-S349, p/n PSA72U-00W00XB, s/n Y4483143K, white screen sometimes. Advice from previous service-faulty LCD scree board? Dismantled laptop, only to find it's integrated on the mainboard(mouse pad cable socket on mainboard and one cable track were damaged last time when it's serviced, causing laptop failed to work when puting the laptop back), "white screen" happened twice, the first time it's fixed by pushing Fn+F5, second time it's right after coming out from standby, also it's never happened when running BurnInTest so it's not the mainboard's fault, just the connection between mainboard/LCD. Applied contact enhancer to the socket/data plug, laptop tested for 3 days, no fault found.


Acer TravelMate 213TXV, Model 2008, s/n 9140R01X4314800C0FK000, repaired broken power socket, FDD no go, removed foreign object in it, still not reading. HDD has no OS, CD booting fine.

IBM T23 1S26472TA99ZR8X9, 14" LCD backlight tube replacement.

Compaq Armada E500, 1J06DNM4957T, p/w removal.

IBM A20M 1S26284SA9797N5L, p/w removal.

IBM R50 1S18296DM99T8792, no turning on, drawing 0.3A@16V, found one FET shutdown, 1cmx1cm area burnt out & liquid mark/softdrink? not worth repairing.

Toshiba Satellite SA60-672, Model PSA60E-02Z02P7Y, I74140060QSSA6002Z02P7YD, xp shutdown sometimes, cleaned CPU fan, fixed.

Compaq Presario 900 Series PP2140, P921APA140X420VC12E 1V2CKSBZ430L, faint image. Another inverter, still the same, new tube, same. Image brightness changed as screen opene/closed, repaired broken inverter cable, lcd working fine.

LCD screen Philips model: 15L5082Q/22C, s/n TY009948067614, buzzing. Buzzing & flickering when turned on, traced fault to 2 x capacitors, replaced one 150uf/400V and one 1800uf/25V (with a 2200uf/25V). Going fine.

E500 Battery 6N1204J3JW6967, replaced cells and reprogrammed 24C01 after first cycle being too short.

Sony Z505GATH, modelPCG-532D, 28314170 7600697. No go, no light at all, no 3.3 to the power switch. Traced fault to dry joints on LT1628 & AD3421 ICs, resoldered the pins. Laptop going fine, vibration tested fine.

IBM T21 1S2648EDA99VR184, blank screen, replaced LCD ribon cable. Put contact enhancer in to connectors both ends.

Prestigio P4 2.66GHz, model N243S8 PZXN243S933200108. Not turning on, no current at all. Found CPU power circuit 6 xIRF7811 short circuit, replaced the FETs, still no go but drawing 200mA current, no 3.3 & 5V, checked the power section, replaced faulty resistor 10ohm to the Max1632 +V rail, laptop started up but failed to load XP, shutdown. Removed heat transfer pad that was added to the heatsink, used silicone paste only. Laptop running > 6 hrs fine.

IBM T23 2647-8NA 99-F3L3P(no LCD panel) and 2647-8NA 99-F3L3M, P/W removal.

vpr Matrix, series 110, Q02N30185A1771N/SVID03808299FF, not turning on at all. dismantled and found mainboard fine, turned on with external monitor but failed when LCD connected, replaced the LCD assy, going but shutdown sometimes, added contact enhancer to CPU socket and put silicone on CPU heatsink. laptop works fine.

Toshiba TE2100 Model PT210A-006P9 72015595V, dark screen & freez up sometimes. LCD problem was traced to cable in laptop, 5v to inverter bad connection, attached a wire socket to socket, screen fixed. Second fault CPU overheating, redo cpu heatsink, still not stable. It's display IC overheating, not repairable by us.


HP 1530 LCD display, model PE1236 s/n CNK3441203, backlights no go, fix inverter's fault.


IBM R31 1S2656ABMAKV6L5G, p/w removal.

IBM T23 1S26478NA99L3L, p/w removal. won't start with PCMCIA wireless card inserted.

NEC Packard Bell Easynote F5287 296613370122%, no power, loose power socket, resolder & glue socket.

NEC VERSA APTITUDE, s/n 560, was told dead battery, check battery fine, repair charger circuit. Laptop charging and battery going fine.


IBM T23 1S26472TA99ZP5N7, 0175 CRC error, clear corrupted eeprom, laptop works fine.


Compaq Presario 1500 Series PP2140, P1525USP240P540WC51E, s/n 9X2AKQFZBlEJ, SVID0178677D4B, new battery not charging. Fixed DC charger board, battery charging but only to 16%, recalibrated battery,will go up 100% but won't last long. Finally found battery is a series CM2081 for CM2080 series laptops!

Dell Latitude C640, J63W7lS, P4 2GHz, not turning on, found standby linear regulator overheated/overloaded, fault caused by a P/FET shorted G/S pins. Replaced the FET, laptop going fine. Upgraded bios to A10

Dell Latitude C640, CSYT6lS, P4 1.8GHz, corrupted BIOS chip, used A08/10... copying bios from another C640, coming up BIOS and keyboard controller ROM versions mismatch and won't go further. As the original bios version is not known, tried a few times before it worked. Upgraded bios to A10.

IBM T23, 1S26474PA99GXG4G, p/w removal

Compaq EVO N610C, PP2040, 470050-421/CNU3470GNC, a few problems with battery and power supply including turning off when the AC adapter plugged in after starting up with the battery, tested working fine with bench top supply and 18.5V 2.7A adapter it specifies.

IBM 600X 26454EA99RM480, could not boot from CD, file error 4. checked CD's fine on a second laptop, and connecton's fine, later disable onboard RAM and it works fine.

Thinkpad R32, 1S2658CFMAKVPN7B, password removal.


Thinkpad T22 P3900, 1S26478EA99M8AV3, not fire up sometimes, found it posted to RAM and stoped, checked RAM OK, put it in the other slot. Works fine. HDD loading XP fine.

Thinkpad T23, 1S26472TA99ZP9T6, didn't post, tried RAM in other slot, no go, later found RAM faulty? works with aPC133 RAM stick. Loaded Win thru CD OK.


Dell C640 tag 5X2J7lS, P4 2.2GHz, didn't start, drew no current, found connection between power input inductor & first power FET broken(had resistance continuity but not voltage's). Wired the two points. Laptop works fine.

Tos Satellite 1410 PS141A-0502YP 13046599P, Battery problem, orange light, not charging, fixed charging circuit, battery charged OK but shutdown soon after turning on. Tested laptop with another battery fine. BATTERY'S FAULTY ALSO


Toshiba TE2100 S/N 601, green screen, found excessive solder on one connector socket, removed the solder, still green, traced fault to a open circuit inductor. Replaced the whole adapter board. Screen works fine, k/b no go, hdd no go.


Tos TE2100 62020861V unstable green screen, resoldered connector socket. Screen works fine. Laptops started up fine.

Compaq Evo N610c PP2040, CNU3420F34, 470059-170, turn on but not POST, found CPU running, dismantled laptop, reseat RAM, going & running WinPE from CD drive O.K.

Dell Latitude C800, 2DZY4lS, turn on a few seconds then off, traced fault to CPU power supply IC, no PGood, replaced the IC, starting & running win2k on HDD fine.

Toshiba Tecra9000, PT900A-01TZ7, X1013590J... beyond repair

Dell C610, tag: FJCC51S, password removal.

Dell Inspiron 6000, P4M 1.6G HGS2P71, short circuit w/o turning on, traced fault to cpu p/s irf7821, replaced & still won't start, shorted or went for a few seconds when power up, checked and replaced Max1999, later found another intermittant low-side power FET, works fine once replaced.

Thinkpad R31: Found system had no 5V & 3.3V supply, checked power IC MAX1631 looked normal but wouldn't work, tried another IC, same, added a bypass capacity to 1631's VL, 5V & 3.3V going. Laptop starts up fine.

Compaq N1020V, Laptop won't boot from harddrive but booting from CD fine, HDD not recognized by a desktop PC, put a good HDD into laptop, same. Dismantled laptop, traced fault to connection between mainboard & HDD PCB, fixed the connection, deleted HDD partition and redone partition, formatted with win98 DOS fine, checkdsk fine.

TravelMate 250: No power up, showing shorted circuit (8V, >5A), traced fault to MAX1999 section, replaced a shorted power FET, working fine, running over 5 hrs O.K.

Toshiba TE2100: no startup, worked on power module connectors, also LCD connector on graphic card. HDD noisy and laptop won't boot with HDD attached.

Packard Bell Ipower 5542: Repair LCD fault, checked fault caused by inverter, ordered inverter & replaced, screen works fine. Rebuild battery 11.1V 6600mAH 12 cells. Found laptop was not charging the battery, traced fault to battery controller IC 1772, replaced the IC, battery charged fine. (Note: two remaining faults, can not tighten bottom screws & CPU fan screws, bottom ones cause faulty keyboard, fan screws cause laptop to shutdown!!! PCB too thin/soft?)

PC Company Green 731: Could not start, AMI code 2D, suspect RAM fault, dismantled laptop to resolder RAM slots, fixed but same fault 3 days later, found pins still there, soldered again. Working for nearly a week fine.

Compaq Presario 2200, model 2252AP, celeron M, 18.5V 3.5A adapter, not power up loose power connector, dismantled lapotp found socket pin soldering fine, just the positive pin inside the socket loose, re-solder pin, power up fine.

dell latitude c600 pp01L tag 57dg31s removed 24c02 to get admin p/w

IBM Thinkpad T23 Type 2647-4pa s/n 99-GXG2R 02/06 found loose inductor on the back of pcb, soldere it properly. Testedlaptop working fine

Toshiba Portege 3505 notebook p/n PP350U-0078DE s/n 23058227puLCD LTM12C328T/VF2095P03WACOM digitizer unit SU-010-A01A G83C0001C2103DNK00131713 strip not responding to stylu, found loose cable inside lcd assy

HP Compaq nx7010 laptop PP2080S/N: CND5050J7CScreen won't work with new ordered inverter, checked inverter's missing one turn on signal, wired it to turned on the screen but it failed after a few minutes.Used original inverter, works fine.

Toshiba Portege 3020CT password removal, bios ver 7.7, can be done after the red led turn off.

Toshiba Portege 3020CT password removal, bios ver 8.0, hard to remove

TravelMate 210 Series 210 laptop TER00029055106412, found no LCD loose connection, just laptop not booting, coming up file's missing, checked harddrive fine, tried a known good HDD, still the same, memory test reported RAM fault, soldered slots, cleaned RAM connectors. Running XP overnight fine.

IBM Thinkpad T23 TYPE: 1S2647JA799BMWP8 small current when started, cpu no voltage, checked CPU power supply IC had no ON signal, put ON signal there, CPU power ok but still won't boot, traced fault to dry joint inductor next to North Bridge. Fixed.

IBM Thinkpad R31 Type: 1S2656E5MAKV7N5W, password removal

IBM 600X 26454EA99RM480, could not boot from CD, file error 4. checked CD's fine on a second laptop, and connecton's fine, later disable onboard RAM and it works fine. Worked on another 600x with not seeing harddrive problem, connections OK so it's control circuit's fault.

Thinkpad laptop R32, 1S2658CFMAKVPN7B, password removal.



IBM A31 Type 2652-C3A S/N: 99DFGMC, dark screen, checked inverter has output, replaced the 15" backlight tube, screen's fine.



IBM T23 2647-8NA 99-F3L3P(no LCD panel) and 2647-8NA 99-F3L3M, password removal.


Dell L400 Service Tag: FB8161S power meter show startup for a few seconds then stoped, check memory, was memory fault, worked with PC133 RAM. HDD passworded.

Apple iBook G4 Model A1055 24V 1.875A. Not starting with a power supply. Dismantled laptop to find no voltage inside, wired 24V supply after the DC socket and it started fine.



IBM T23 laptop 1S26472TA99ZP5N7, 0175 CRC error, clear corrupted eeprom, laptop works fine.


Toshiba TE2000, model # PT200A-00JYV, S/N 32019513V Not powering up (no stable 3.3 5V), current indicating starting then fall back.Check power curcuit, soldered suspected dry joints, tested running WinPE fine.

Toshiba TE2000, model # PT200A-00JYV, S/N 32016670VNot powering up (no stable 3.3 5V), current indicating starting then fall back.Check power curcuit, soldered suspected dry joints, tested running WinPE fine.

Dell Latitude LS Model PP01S, DS/N TW020FCR128001140599 Service Tag: JVDR21S, White screen, dismantled laptop, voltage to LCD fine, try to swap screen with the L400, no go, dismantled LCD to reseat cable, going O.K

Compaq N1015VA153X430VC250, 470046-545, 1V2BKSBZX13N, blank screen, checked inverter cable as it's fixed last time, no fault found. Turned on laptop, didn't POST at all, drawing >4A current, checked CPU running, traced fault to one hot RAM, removed the RAM stick, current's back to normal, laptop running fine.

Dell C640, 319371S, Password removal.

Toshiba 1410 PS141A-0502YP, 13046613P, battery no go, found battery faulty, good battery won't work all the time, found intermittant shorting pin, removed it, battery works fine.

ASUS widescreen LCD Samsung LTN154P1-L02,AS 15.4" WSXGA+'ZERO',NF1P550234LD0009, tube 340mmx2mmOD, tube failed, ordered the tube, replaced tube, cut both ends, extremely difficult to put it back together.

Compaq N1020V PP2150N s/n 9X33LDLZC3VO, not picking up hdd, found two fault, another one is won't boot CD if the battery's removed screen went blank.

Dismantled laptop reseated HDD connector assy, checked CD connection's fine, can't fix the second fault, HDD & CD go fine when battery is there.

Acer TravelMate 213TXV, Model 2008, s/n 9140R01X4314800C0FK000, repaired broken power socket, FDD no go, removed foreign object, still not reading. HDD has no OS, CD booting fine.

LCD display Philips model: 15L5082Q/22C, s/n TY009948067614, buzzing. Buzzing & flickering when turned on, traced fault to 2 x capacitors, replaced one 150uf/400V and one 1800uf/25V (with a 2200uf/25V). Going fine.

Toshiba Satellite laptop 1410 PS141A-0502YP13046599P, Battery problem, orange light, not charging, fixed charging circuit, battery charged OK but shutdown soon after turning on. Tested laptop with another battery fine. BATTERY'S FAULTY ALSO



Dell Latitude C640, CSYT61S, P4 1.8GHz, corrupted BIOS chip, used A08/10... copying bios from another C640, coming up BIOS and keyboard controller ROM versions mismatch and won't go further. As the original bios version is not known, tried a few times before it worked. Upgraded bios to A10.

Toshiba 4600 PS460A-09DZT 81013755J no boot, dismantled laptop to check voltages on main board, no fault found, reset all connectors, laptop works fine, fixed screen switch.

HP Compaq Presario R3000 laptop, CND442004K, no AC supply, repair loose power socket.

Compaq evo N400C series PP2070 1J26JMWZX21G, password removal, disconnected cmos battery to clear password. Cleaned PCB corrosion.

IBM thinkpad T30, 2366-92M 99-LCW91, password removal.

IBM thinkpad T40, 1S237372M99RT444, password removal.

Rebuild vpr Matrix VPRN-BA200 14.8V 4400mAh battery, reset gas gauge. Tested charging fine.

Toshiba TE2100 video board, soldered cable connector pins.

Dell Latitude C640, 4RYQ61S, not power up, dismantled motherboard to replace U45, board works fine but had password, removed password. Tested started CD based WinPE fine, hdd's online also.

Dell C600, DBXR51S, removed password. Tested started CD based WinPE fine, hdd's online also.

Dell inspiron 5160, F09CJ61, not charging & power on, traced fault to power circuit, resoldered ICs, battery charging & laptop turns on fine, running CD WinPE fine.

Clevo D220S NCD22S2J00099, password removal

Clevo D400S NCD40S3F00058 password removal

IBM Thinkpad T30, 1S236681M99LLF16, Fixed RAM slot problem, it's worked on before, a few tracks broken.

Toshiba Tecra A4 PTA40A-0U9004, password removal. SMSC LPC47N249-AAQ

toshiba satellite A60 Z4020817Q password removel

Toshiba Portege 3500, PP350A-002GJP, 13060682P, password removal.

Dell 17" widescreen Inspiron 9300 m/b HG58891, not turning on, traced fault to power on circuit, fixed, turning on fine, unable to check further using temp heatsink.

Dell 17" widescreen Inspiron 9300 m/b HG58891, power on/off right away, current small, found power on when the graphic card is removed, later cleaned corroded connectors on graphic card, laptop works fine overnight.

Toshiba A70 PSA70A-0W700W, X4364296K, laptop overheat, traced fault to CPU & fan assy.

Toshiba Tecra 9100, worked on a few with sound issues, most of the laptops were worked on before, broken tracks on mainboard, beyond repair.

Dell 17" Wide screen, Inspiron 6400/E1505, DXJVHB1, power on then off, checked cpu power circuit, found a shorted capacitor, removed the capacitor, power stay on fine, smoke coming out when tested with the provided graphic card, graphic card's faulty, without the card it powers up fine and flashing orange indicating a low battery.

Compaq laptop NX9010, CNX9010UC200X420DCN25P, CNF32126L6, Password removal

Toshiba, speaker problem, found volum knob faulty, replaced but the knob is not for this model. Removed knob, to be put on

HP Pavilion ZV5000 CND4320JQJ, PD131PA#ABG, not starting, replaced diode in the power inline circuit. (posted 12/02/07)

Compaq M2000, model M2045AP, CNF501BWC, Lsass error with ‘Security Accounts manager Initialization fails’, repaired corrupted register files, XP running fine, check disk done, no fault found.

HP Compaq NX6120, CNU518*9H2, Freezes when using AC adapter, very slow, lot of dust in CPU heatsink, cleaned. Tested CPU, RAM fine... NOT FIXED in set time.

HP Pavilion ZV5000, PF119UA#ABA, CND4260BS3, 18.5V 6.5A, not power up, replaced fault power diode. Charging fine, running Win PE > 12 hrs fine.

HP Compaq nc6000, CNU4050F35,DP894A#ABU, 18.5V 3.5A, liquid damage, no power up, found no liquid appearance, power on intermittently, power board touching heatsink, once separated, turned on fine.

Toshiba Satellite M40, PSM43A-11000H, 85094718Q, 19V, 3.42A, no power on, short circuit, 2V, >5A, traced fault to two short circuit capacitors and a power fet, worked fine once replaced.

Latitude C640, DWM771S, would not turn on, short circuit (5V, >5A), repaired CPU power circuit fault, laptop going fine, CD & battery bays fine, ran Win PE fine > 12 hrs.

HP Pavilion DV1000, CNF507351V, not power up, found open PL1 in power circuit, replaced, supply voltage dropped to 3V, current >5A, found 2 short circuit capacitors, replaced, laptop running fine, can't charge battery as battery is faulty?

Thinkpad T40, 1S237375M99RD636, not power up from AC adapter, replaced open circuit component in power circuit, T40 running fine.

HP Compaq NC4000 18.5V 3.5A, CNU34204X0, no boot at all, small current, repaired CPU power circuit. Laptop running fine.

NX9040, CNF4441C79, won't power on, battery power ok, found Vmain = 11-18.5V fluctuation, caused by power input circuit control signal's 6V - 18.5V movement (6V normal), found a dry joint in atransistor pin, soldered and Vmain=18.5 not changing. Laptop going, running overnight fine.

TP R51, 1S2887GVM99NYDW0, not turning on, traced fault to Max 1631 and its BST diodes, replaced them, laptop going fine, running > 6 hrs

Toshiba M30X-124, Z4345206K, power on but not starting up, test card show CPU NOT RESET, CPU had no power, checked CPU power FETs fine, replaced CPU power supplier IC, work overnight fine.

Toshiba Satellite PSP26A-0J2R9, won't power on, found bubbled south bridge IC, faulty mainboard K000014040 caused by damaged USB sockets!!!

Dell Inspiron 510m tag 32FWF1S 19.5V 4.62A pa-10 or pa-12 adapter. Won't power up by and trip AC adapter, runnig off battery fine, found short circuit capacitor in AC power circuit, replace it and laptop fine.

IBM Thinkpad R31 2656-ABM, won't power up, bench power supply showed current went up to idle ~50ma and back to zero, Tested Max1631 pins 3.3V and 5V for <1 sec then back to 0V, replaced 1631, checked its Hi/Low FETs, fine. Found USB socket in the back was damaged, replaced the socket, laptop fine.

HP 1730 LCD 17" monitor, Dead monitor, buzzing noise, fixed faulty power supply.

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Laptop Repair Database