Upload
hoangtruc
View
227
Download
15
Embed Size (px)
Citation preview
Viera PlasmaViera Plasma Display Display PC Board Recycling PC Board Recycling
Component Level RepairComponent Level Repair
Curriculum Content
Course 1
PCI PCB Recycling Program/Process
Model line-up/PC board functionality
Course 2
PCB Recycling Component Level Repair Techniques
Course 3
Understanding How System Shut Down Operates
Course 4
Troubleshooting Hints / Common Symptoms
END
Servicentre determines a returnable PC board is defective.
Servicecentre orders replacement PC board from Panasonic National Parts
After repairing the product, servicecentre returns the following to Panasonic National Parts:Returnable PC board/part Completely fill out Returnable Parts Report form
Once Panasonic National Parts receives the defective sub-assembly with all the required documents, They will:•Forward a copy of Returnable Parts form to NWCS then payment is issued to the servicentre.•Note: for O/W: NP Issues dud credit payment to servicentre for returning the defective sub-assembly.
Procedure for Returning Returnable PC board
Returnable Parts Return Form:
Must be completely filledout and sent together withthe defective PC board.
If a board is being returned that is unused please clearly mark the form as unused.
Model line up and PC board functionality
2005/2006 PDP Line-up2005/2006 PDP Line-up
20052006
TH-50PX500TH-50PX500
TH-42PX500TH-42PX500
TH-42PD50TH-42PD50
TH-50PX50TH-50PX50
TH-42PX50TH-42PX50
TH-37PX50TH-37PX50
TH-50PX600TH-50PX600
TH-42PX600TH-42PX600
TH-42PD60TH-42PD60
TH-50PX60TH-50PX60
TH-42PX60TH-42PX60
TH-37PX60TH-37PX60
SD Leader Model
HD Step Up Model
HD Leader Model
TH-58PX600TH-58PX600
TH-58PX60TH-58PX60
2005: 50PX500/PX50 2006: 50PX600/PX60
Differences 1. The PB and Z board are now on the PA Board 2. Location of the PA and D board was changed 3. HDMI interface (DV) relocated. 4. HC board added ( factory use)
C2
SU
SD
C1 C3
C6 C4C5
SS2
SCScan Drive
P PowerSupplyD
Format ConverterPlasma AI Processor
ZAudioAmp
H AV Terminal
DGDigital Signal
Processor
PADC-DC-
Converter
PBFan ControlAudio Power
DTD-TV Interface
G Front TerminalPC Card
GKKey SW
SPOWER SW
SSSustainDrive
SS3
KREMOTE, LED
DVHDMI
C2
SU
SD
C1 C3
C6 C4C5
SCScan Drive
P PowerSupply
G Front Terminal GKKey SW
SPOWER SW
KREMOTE, LED
SS2
SSSustainDrive
SS3
DG
HAV Terminal
DT
D
HC
PADC-DC-
Converter
D-TV Interface
PX500only
GSSD Card
GSSD Card
2005 & 2006 PC Board Difference (for 50” models)
2005 & 2006 PC Board Difference (for 42 & 37” 2005 & 2006 PC Board Difference (for 42 & 37” models):models):
2005: 42/37/PX500/PX50/PD50 2006: 42/37/PX600/PX60/PD60
Differences1. The PB and Z board are now on the PA Board2. Location of the PA and D board was changed3. HDMI interface (DV) relocated.4. HC board added ( factory use)5. Reduce the upper C boards for single scan.6. Reduce the S2 and S3 boards.
SCScan Drive
P PowerSupplyD
Format ConverterPlasma AI Processor
SU
SD
ZAudioAmp
H AV Terminal
DGDigital Signal
Processor
PADC-DC-
Converter
PBFan ControlAudio Power
DTD-TV Interface
SSSustainDrive
SPOWER SW
KREMOTE, LED
DVHDMI
SS3
SCScan Drive
P PowerSupply
C1 C2
SU
SD
SSSustainDrive
SPOWER SW
KREMOTE, LED
DT
H
AV TerminalDG D
HC
PADC-DC-
Converter
PX600/60only
G Front Terminal GKKey SW
D-TV Interface
SS2
PX500only
G Front Terminal GKKey SW
GSSD Card
C4 C3
C2C1
PC CardGS
SD Card
2005 Plasma TV PC Board List
PCB DescriptionTH50PX5
00TH42PX500 TH50PX50 TH42PX50 TH37PX50 TH42PD50
SU Scan Out (Upper)TNPA3219AB
TNPA3189ABTNPA3219AB
TNPA3189AB TNPA3551 TNPA3242
SD Scan Out (Lower)TNPA3220AB
TNPA3190ABTNPA3220AB
TNPA3190AB TNPA3552 TNPA3243
SC Scan DriveTNPA3567
TNPA3557 TNPA3567 TNPA3557 TNPA3573 TNPA3543
SS Sustain DriveTNPA3568
TNPA3558 TNPA3568 TNPA3558 TNPA3574 TNPA3544
P Power SupplyETXMM564MEK
ETXMM563MDK
ETXMM564MEK
ETXMM563MDK
TNPA3570AB
TNPA3570
DFormat Converter/Plasma AI Processor
TZTNP010YCS
TZTNP010YDS
TZTNP010YCS
TZTNP010YDS
TZTNP010YES
TZTNP010YFS
DG Digital Signal ProcessorTNPA3625AB
TNPA3625TNPA3625AD
TNPA3625ACTNPA3625AE
TNPA3625AF
DV HDMI InterfaceTNPA3626
TNPA3626 TNPA3626 TNPA3626 TNPA3626 TNPA3626
DT ATSC InterfaceTNAG157S
TNAG157S TNAG146S TNAG146S TNAG146S TNAG156
C1 C1 Data DriverTNPA3561
TNPA3553AB TNPA3561 TNPA3553 TNPA3547 TNPA3545
C2 C2 Data DriverTNPA3562
TNPA3554 TNPA3562 TNPA3554 TNPA3548 TNPA3546
C3 C3 Data DriverTNPA3563
TNPA3555 TNPA3563 TNPA3555 TNPA3549 NONE
C4 C4 Data DriverTNPA3564
TNPA3556 TNPA3564 TNPA3556 TNPA3550 NONE
C5 C5 Data DriverTNPA3565
NONE TNPA3565 NONE NONE NONE
C6 C6 Data DriverTXNC61BHTUJ
NONETXNC61YCSU
NONE NONE NONE
PADC-DC Converter/Power SOS
TNPA3620AE
TNPA3620AE TNPA3620 TNPA3620 TNPA3620 TNPA3620
PB Audio Power/Fan ControlTNPA3643AD
TNPA3643ADTNPA3643AC
TNPA3643ACTNPA3643AC
TNPA3643
H AV Terminal/AV SwitchTNPA3598
TNPA3598TNPA3598AC
TNPA3598ACTNPA3598AC
TNPA3598AB
Z Speaker Amplifier TNPA3621TNPA3621AB
TNPA3621AB
2006 Plasma TV PC Board List
2005 & 2006 PC Board Difference:2005 & 2006 PC Board Difference:
Easier connection and parts change
Lead connector
Bridge connector
Before
After
SU board
Connecting behind the board Connecting on the board
Before
After
→
General SignalGeneral Signal Circuit Flow for Circuit Flow for 20062006 Model ( Model (42V & 37”):42V & 37”):
Input Source Signal Processor Panel Drive
DT: ATSC Interface and tuner
H : AV Terminal / AV Switch PC (PX600 Only)
GK: Key Switch
K : Remote Receiver / Power LED
G : Front terminal
GS: SD Card Slot (PX600/60 Only)
DG: Digital Signal Processor / HDMI Interface D : Format Converter / Plasma AI Processor / Sub-Field Processor PA: Audio AMP / Speaker out
SC: Scan Drive
SU: Scan Out (Upper)
SD: Scan Out (Lower)
SS: Sustain Drive
C1: Data Drive (Right)
C2: Data Drive (Left)
DG
DT
GK
H D SC
SU
SD
SPEAKER ( L/R )
C1 C2
SS
HDMI
Panel (HD or SD)
PA
GS
GK
PX600PX60only
PX600PX60only
R,G,B :10Bit (MAIN)
R,G,B :10Bit (Sub)
SD Card DG
OSD
To D Board
MAINMICRO
PROCESSOR
IC1103
IC2601
H
10bit A/D
GC3 FS
GC5
IC4037
HDMI2
(*1) LVDS : Low Voltage Differential Signaling
<H Board> IC2601 : VIDEO SELECT <DG Board> IC4019 : A/D CONVERTER (10Bit) IC4020 : SIGNAL PROCESSOR (For SUB WINDOW) IC4037 : SIGNAL PROCESSOR (I/P CONV. ,RESIZE MIX … ) IC4036 : LVDS TRANSMITTER IC1103 : MAIN MICRO PROCESSOR
LVDS Signal
R,G,B,HS,VS
Y,C / V
Y,C / V
Y,Pb, Pr
AV1
AV2LVDS (*1)
TRANSMITTER
IC4036
R,G,B :10Bit
V
PC
General Video Signal Processing: General Video Signal Processing: PX600/60 series
Y,Pb,PrComp.2
G
AV3
Y,C / V
HDMI1
HDMI I/F
IC4026
Comp.1
PEAKSLITE
IC8240TUNER ATSC
LSI
IC8211
Y/C (for Monitor Out)
Included OSD
Digital
DT
GS
Y/CMonitor Out
VIDEOSWITCH
IC2601
Y,Pb,Pr (Sub)
Y,Pb,Pr (Main)
IC4020
IC4019
PX600 only
Analog
Thank You For Completing Course One
Course TwoPCB Recycling Component Level Repair
Techniques
Viera PlasmaViera Plasma Display PC Board Recycling Display PC Board Recycling Component Level RepairComponent Level Repair
Course 2PCB Recycling Component Level Repair Techniques
Adjustments Procedure
I. Item preparation:
1. Input a white signal. (please refer to the next slide on several ways to generate a white pattern).
2. Set picture controls as follows:Picture menu: DynamicP-NR: OFFAspect: 16:9
CAUTION:1. Perform Vsus adjustment first.2. Confirmation of Vscn voltage should be done after confirmation of
Vad adjustment.When Vad = -105V, Vscn voltage is 35V +/- 4V.
The following adjustment procedures are mandatory after replacing theSC, SS & P boards. It is also required if the Panel is replaced.
1. External pattern generator.
2. Internal white pattern in Service mode. (Please see next slide on how to enter Test Pattern Mode).
3. Disconnect LVDS cable DG5 on the DG board to display white pattern.
Several ways to generate White Pattern signal:
White RedGreen Blue ON/OFF Aging
Ramp RedRamp GreenRamp Blue1% windowColor barA and B zoneScroll
Ramp white
Test Pattern
Entering Test Pattern Mode:
How to enter test pattern mode:1. While pressing "VOLUME-" button of the TV set, press
“RECALL” button of the remote control three times within 2 seconds.
2. Push button "1" of remote control several times, and select "OPTION” setting.
3. Press "OK" button of Remote controller for three seconds or more to place the unit in the test pattern mode.
II. Driver Adjustment TH42PX60
Name Test Point Voltage Volume Remarks
Vsus TPVSUS (SS) Vsus ± 2V VR251 (P) *
Ve TPVE (SS) Ve ± 2V VR6000 (SS) *
Vset TPVSET (SC) 280V ± 7V Fixed
Vad TPVAD (SC) -105V ± 1V VR6600 (SC)
Vscn TPVSCN (SC) Vad+140V ± 4V Fixed
Vda TPVDA (SS) 75V ± 1V Fixed
Adjustment voltage
III. Initialization Pulse Adjustment
1. Input a White signal into the unit.2. Set picture controls as follows:
Picture Menu: DynamicP-NR: OFF
3. Connect oscilloscope probe to test point TPSC1 (T2).Adjust VR6602 to obtain 195 +/- 10 µsec for T2.
Note: Connect oscilloscope’s negative probe to common ground(Please use panel metal chassis as common ground)
Adjustment necessary when PC board exchanged
Adjust the following voltages using a multimeter:
PCB Adj Pt TP Voltage Volume
P
Vsus TPVSUS (SS) *Vsus +/-2V R628(P)
Vdat P12-1,5(P) 75.5+/-0.1V R665(P)
PFC C445(P) 396V+/-0.5V R443(P)
SC Vad TPVAD(SC) -105+/-1V VR6600(SC)
SS Ve TPVE(SS) *Ve+/-2V VR6000(SS)
D, DG White balance and black pedestal level confirmation necessary.
Caution: Do not adjust Vsus below Ve to avoid damage to PCB.
*Please refer to Panel label for set value.
Common symptoms experienced if the adjustment is not performed
• Several images maybe displayed at the same time.• Excessive brightness.• Low brightness.• Wrong hue/color.• Reduction of the life of the panel.
POWER SUPPLY
Sequence of events when Plasma TV is plugged in
When a Plasma TV is plugged in, there are a few indications of normaloperation. Knowing these will help us understand what’s going on with the unit when an abnormality occurs.
1. There is a click from relay RL402 and RL403 when they are activated.
2. The LED in the optical jack (inside the DT board) turns ON for approximately 4 seconds.
3. Immediately after, the relay click the Tuner LEDs turn ON for approximately 20 seconds.
4. The LED in the optical jack turns ON again for approximately 1 second and both LEDs (tuner and optical jack) turn OFF.
5. Then another click is audible from relays RL402 & RL403, indicating that they are no longer engaged. Note at this time, LEDs (for Tuner & optical jack) are turned OFF.
Standby Block (Part1)
Standby Block (Part2)
Power Supply (Standby Circuit)
STB 5V Distribution
Power Supply (Standby Circuit)
STB5V, STB3.3V & STB1.5V
PP
F-STB-ON (Primary)
PP
F-STB-14V
PP
STB5V and TV-SUB-ON function on PA board
PPAA
SUB-Voltages Output from the PA board
PA Board Test Points
POWER ON
POWER ON
Panel Standby ON Circuit
3.33.3vv
Power Supply Secondary Circuit
VSUS and VDA Circuit
PA Board Circuit Explanation
Main voltages output from the PA Circuit
5V Distribution
VSUS Distribution
Troubleshooting Guide
Can the click sound from the relay beHeard after the TV is plugged into the wall
Outlet?
Is there a 5V at pin1 of connector PA40 on the PA board?
Wait for approx. 20 sec. after applying power then turn the power ON.
Replace P BoardIs there 2.5V at pin 13 of
connectorP25 on the P Board?
Replace P Board Replace DG Board
Replace D Board
Replace P BoardIs there 3.3V at pin 1 of connectorHC01 on the HC Board?
Can the click sound from the relays be heard whileattempting to turn the power ON?
Is there 2.5V at pin 17 of connector P25 on P Board?
YES
YESNO
NO
YES NO NO YES
NO
YESYES
Thank You
For Completing Course Two
Course Three
Understanding How System Shut Down Operates
Viera PlasmaViera Plasma Display PC Board Recycling Component Level RepairDisplay PC Board Recycling Component Level Repair
Course 3Course 3Understanding how System Shut Down operates
A short circuit on the voltage lines.
Over-voltage condition.
Abnormality in the Control Drive Pulse circuit i.e.
SC, SS, SU or SD boards.
Missing source voltage to the PA board (STB14V) from
P board.
Missing output voltage from the PA board to the DG board.
Missing 15V or Vsus on either SS or SC board while the control drive pulses from the D board are being provided.
Possible causes of shutdown
D BOARD SOS DETECT
D Board SOS detect
SOS line Line Monitored
# of times LED blinks
SOS 2 15V 2 blinks
SOS 3 P3.3V(15V & STB5V)
3 blinks
SOS 4 PS 4 blinks
SOS 5 5V 5 blinks
SOS 6 SC1 6 blinks
DRV RST 5V DET 6 blinks
SOS 7 SC2 7 blinks
SOS 8 SS 8 blinks
DG BOARD SOS DETECT
DG Board SOS detect
SOS line Line Monitored # of times LED blinks
STB 3.3V DET STB 3.3V 10
MAIN 3.3V DET MAIN 3.3V 10
SUB 5V DET SUB 5V 10
SUB 9V DET SUB 9V 10
PA-TUNER-SOS PA & Tuner +30V 10
FAN SOS FAN CIRCUIT 11
SOUND SOUND OUTPUT CIRCUIT
12
PA Board Test Points
PA Board Over Voltage Protection
PA Board Loss of Sub-Voltage Protection
PA Board Loss of Main-Voltage Protection
PA Voltage Output
PA SOS Detect Circuit
LED BLINKING 10 TIMES
When the power LED blinks 10 times right after the Plasma TV has been plugged in to the AC source, the possible defective boards are:
P BoardPA BoardDG BoardH Board DT Board
How to Rule out the P Board
1. Use a Peak Hold Meter for voltage reading
NOTE: Follow this procedure when the click sound of the relay can be heard after the unit is plugged in. If the relay does not click, check the STB 5V from the P board. If the STB 5V is missing, the P board may be defective. (If STB 5V is OK, the DG board may be defective.
2. Disconnect Connector P10 on the P board. (Make sure that the TV is unplugged)
3. Because you only have 2 – 3 seconds to measure the STB14V, place your meter’s probe at pin 1 of connector 10 of the P board before plugging the TV in to the AC line.
4. Plug the TV in to the AC line while still holding the probe at Pin 1.
5. Check to see if the 14V comes up. If it does not come up the P board is defective. If it does, (since it may take some involvement to determine which of the PA or DG board is defective) it is OK to order both the PA and DG board together.
To rule out H Board
1. Disconnect connector H40 then plug Plasma TV to AC line.
2. If the power LED stops blinking, the H board may be defective, otherwise another board is causing the problem.
NOTE: It is recommended that the PA board be replaced at the same time if the H board is suspected to be defective and will be replaced.
To rule out the DT (Digital Tuner) Board
1. Remove the DT board and then plug the Plasma TV into an AC source.
Note: When the DT board is removed, the unit will still power up but all functions are disabled due to the lack of data communication
2. If the power LED stops blinking the DT may be defective otherwise, another board is causing the problem.
3. Other possible causes of blinking are the PA or DG board.
D Board SOS Detect
DG Board SOS Detect
DG Board SOS Detect
15V Distribution
15V SOS
LED BLINKING 5 TIMES
• This blinking code is caused by an abnormalities in the 5V voltage supply line.
• Other possible cause is a problem in Vda supply voltage line.
5V Distribution Line
5V SOS
Other Cause of 5V SOS
• The Power LED can also blink 5 times if the Vda voltage is shorted. This is normally caused by the Panel demultiplexer ICs.
5V & Vda Distribution on the C Board
Procedure to properly isolate C Board
• When the ribbon cables from the D board to the C boards are disconnected in order to isolate the C boards, the LED will blink 6 times.• To properly isolate the C boards to avoid 6 blinks, TP9387 (on the D board) should be grounded by a 1Kohm resistor.
Note: The next slide will show reasons why SOS 6 blinks is generated when the ribbon cables are removed.
• The Vda connector should also be disconnected.
Drive Reset Circuit
BT30V (Tuner SOS) Detect Circuit
D2663D2663
Sound SOS Detect Circuit
Digital Temperature Sensor
Digital Temperature Sensor
Digital Temperature Sensor (continued)
Fan SOS
Fan SOS
• To determine if the fan is the cause of the 11 blinks, simply use a peak hold meter to determine if pin 3 of the fan connector goes high before shutdown.
• If it does, the fan is defective.
• If not, check the other fans and the fan drive circuitry.
No Video and No OSD
Determining whether a no video or no OSD symptom is caused by the video process or the panel drive circuit
Isolation of SC & SS Board
• If any of the connectors providing the 15V or Vsus voltage to the SC or SS board is disconnected, while the connectors providing the scan and sustain drive pulses are present coming from the D board, the Plasma TV will shutdown.
Isolation of the SC & SS Board
Isolation of SC Board
SC2, SC23 & SC20 Disconnected
In this condition, when the SC2 SC20 & SC23 are disconnected the SC board is completely isolated from sources (P and D board).
The power LED stays on and the panel is primed as seen on this picture.The power LED stays on and the panel is primed as seen on this picture.
Expectations when isolating SC Board
7
Isolation of SC Board
Sometimes the TV will go intoShutdown indicating that the
problem is located on the SC Board. This does not necessarily
mean that the SC board is the cause of the Problem.
Isolation of SC Board
Isolation of SU Board
Isolation of SD Board
Isolation of SS Board
Isolation of SS Board
Isolation of SS Board
Isolation of SS Board
SS23 Disconnected on the SS board(No Drive pulses from the D board)
No VDA voltage to the C boards(Reason why the screen is black)
Isolation of SS Board
Missing Drive Pulses from the D board SS11 and SS23 Disconnected, but VDA voltage provided to pin 12 of
SS23 cable
Defective D Board
Defective D Board
Defective SC Board
Defective SC Board
Thank You
For Completing Course Three
Course Four
Troubleshooting Hints / Common Symptoms
Viera PlasmaViera Plasma Display PC Board Recycling Display PC Board Recycling Component Level RepairComponent Level Repair
Course 4Troubleshooting Hints / Common Symptoms
1. Model: TH37PX50PCB designation: SC BoardPart #: TNPA3573
Symptom: Dead/LED off (no blinking code).
Cause: Vsus voltage line shorted to ground due to shorted transistors.
Remedy: Replace Q6611, Q6612, Q6613, Q6613, D6609, open R6710 & R6708. After replacement, check that Vsus line is no longer shorted to ground.
Common Problems
VSUS
R6708 & R6710:
Part No.ERX2FJSR22D
D6609:
Part No.B0HBSN000008
Q6611-Q6613:
Part No.B1JADN000002
Please refer to the attached Technical Bulletin TT-08-02
2. Model: TH42PD50PCB designation: SC BoardPart #: TNPA3543
Symptom: Picture pixelized @ area horizontally across the screen.
Cause: Initialization pulse T2’s level settings is misadjusted.
Remedy: Adjust VR6557 to obtain specified level settings (T2=184 µsec).(Please refer to service manual for complete Initialization Pulse Adjustment procedure).
(1) (2) (3)
Common Problems
Please refer to the attached Technical Bulletin TT-08-05
3. Model: TH42PD50PCB designation: C1 BoardPart #: TNPA3545
Symptom: Blue vertical line @ right most edge of the screen.
Cause: Missing data line.
Remedy: Open R7125
R7125:
Part No.ERJ6GEYJ102
Common Problems
Please refer to the attached Tech Bulletin TT-08-03
4. Model: TH42PD50PCB designation: SC BoardPart #: TNPA3543
Symptom: After pressing power button, unit shutdown then LED blinks 7X
Cause: SOS protection circuitry detects problem in scan output waveform Vf due to shorted scan output transistor Q6511.
Remedy: Replace both Q6511 and Q6512 at the same time.
Q6511 & Q6512:
Part No.B1DFGL000008
Common Problems
Please refer to the attached Tech Bulletin TB-08-04
5. Model: TH42PX50 / TH42PX500PCB designation: SC BoardPart #: TNPA3557
Symptom: Distorted picture.
Cause: Missing TPVSET voltage due to open R6602 & shorted C6526
Remedy: Replace R6602 & C6526.Parts list
1. R6602:
Part No. ERG1FJS471D
2. C6526:
Part No. ECA2AHG470
Common Problems
Please refer to the attached Tech Bulletin TB-08-09
6. Model: TH42PX50 / TH42PX500PCB designation: SC BoardPart #: TNPA3557
Symptom: After pressing power button, unit shutdown then LED blinks 7X
Cause: SOS protection circuitry detects problem in scan output waveform Vf due to shorted scan output transistor Q6511.
Remedy: Replace both Q6511 and Q6512 at the same time.
Q6511 & Q6512:
Part No.B1DFFM000003
Common Problems
Please refer to the attached Technical Bulletin TT-08-08
7. Model: TH42PX50 / TH42PX500PCB designation: P BoardPart #: ETXMM563MDK
Symptom: Dead/relay will not click & LED remains off (no blinking code).
Cause: No output from power output control module.
Remedy: Replace MC701.
MC701 (Power Output Control Module)
Part No.IXMM564M-D-9
Common Problems
Please refer to the attached Technical Bulletin TT-08-07
8. Model: TH42PX50 / TH42PX500PCB designation: P BoardPart #: ETXMM563MDK
Symptom: Dead/relay will not click & LED remains off (no blinking code).
Cause: No standby voltage.
Remedy: Replace IC501.
Parts list
IC501
Part No.MIP3E30MP
Common Problems
Please refer to the attached Technical Bulletin TT-08-06
9. Model: TH50PX50 / TH50PX500PCB designation: SC BoardPart #: TNPA3567
Parts list
Q6604 & Q6654:
Part No.B1DFFM000003
Symptom: After pressing power button, unit shuts down then LED blinks 7X
Cause: SOS protection circuitry detects problem in scan output waveform Vf due to shorted scan output transistor Q6604 & Q6654.
Remedy: Replace Q6604 and Q6654.
Common Problems
Please refer to the attached Technical Bulletin TT-08-12
10. Model: TH50PX50 / TH50PX500PCB designation: SS BoardPart #: TNPA3568
Symptom: Upon power ON, relay clicks then LED blinks 8X.
Cause: No sustain pulse output waveform due to shorted D6020 and/or D6021.
Remedy: Replace both: D6020 & D6021 at the same time.Parts list
D6020 & D6021:
Part No.B0HBSN000008
Common Problems
Please refer to the attached Technical Bulletin TT-08-01
11. Model: TH50PX50 / TH50PX500PCB designation: P BoardPart #: ETXMM564MEK
Symptom: Dead/relay will not click & LED remains off (no blinking code).
Cause: No primary supply to T501 thereby no secondary voltage outputs. Due to open in-rush current limiter K601 & open RF601.
Remedy: Replace K601 & RF601.
Parts list
K601:
Part No. DG12D1-0
RF601:
Part No.HUF5K100J14
Common Problems
Please refer to the attached Technical Bulletin TT-08-11
12. Model: TH50PX50 / TH50PX500PCB designation: P BoardPart #: ETXMM564MEK
Parts list
MC501:
Part No.IXMM564M-C-9
Symptom: Upon power ON, relay clicks then LED blinks 10X.
Cause: No switching voltage output from F14_ON or 12V/15V_ON pins..
Remedy: Replace power module MC501.
Common Problems
Please refer to the attached Technical Bulletin TT-08-10
13. Model: TH50PX60 / TH50PX600PCB designation: SC BoardPart #: TXNSC1BHTUJ
Symptom: Very intermittently unit shutdown and LED blinks 7X.
Cause: No solder @ pin 4 of IC6773.
Remedy: Resolder pin 4 of IC6773.
SC BOARD
IC6773
Common Problems
14. Model: TH42PD60PCB designation: P BoardPart #: TXN/P1ZQTUS
Symptom: Shuts down with power LED blinking 10x.
Cause: Missing 395Vdc output due to shorted Q412 & Q413.
Remedy: Replace Q412, Q413, Q408, Q409, R478 & PR401 on the P board.
Common Problems
Parts list 1. Q412 & Q413:
Part # - B1DAGQ000013
2. Q408 & Q409: Part # - B1DHCD000034
3. R478: Part # - ERJ8GEYJ220
4. PR401: Part # - K5Y502BA0001
Q412
Q413
Q408
R478
Q409
PR401
15. Model: TH42PD60PCB designation: P BoardPart #: TXN/P1ZQTUS
Symptom: Dead/power LED off (no blinking code).
Cause: No primary AC voltage inputs due to open fuses caused by Q406 shorting out. Remedy: Replace F401, F402, Q406 & check/replace thermal resistor (R410) on the P board.
Common Problems
Parts list
1.Q406:
Part # - B1DEHQ000014
2.R410:
Part # - D1F5100E0003
3.F401 & F402:
Part # - K5D802BNA005
F401 & F40
2
R410
Q406
16. Model: TH42PX60PCB designation: D BoardPart #: TNPA3810AHS
Symptom: Picture disappears after few minutes but sound is OK.
Cause: Low Ldo_5V supply to IC9800 (DC to DC Converter) due to leaky D9801.
Remedy: Replace D9801 on the D board.
Common Problems
Parts List
D9801:
Part # - B0JCDD000002
D9801
17. Model: TH42PX60PCB designation: P BoardPart #: TXN/P1BFTUS & TXN/P1BFTU
Symptom: Shuts down with power LED 10 blinks. Cause: Missing 395Vdc output due to shorted Q412 & Q413. Remedy: Replace Q412, Q413, Q408, Q409 & PR401 on the P board.
Common Problems
Parts list 1. Q412 & Q413:
Part # - B1DAGQ000070
2. Q408 & Q409: Part # - B1DHCD000034
3. PR401: Part # - K5Y502BA0001
Q412
Q413
Q408Q40
9
PR401
18. Model: TH37/42PX60&42PX600 PCB designation: P Board Part #: TXN/P1BKTU (for TH37PX60),TXN/P1BJTUS (for TH42PX60) & TXN/P1BFTUS (for TH42PX600)
Symptom: Dead/power LED off (no blinking code).
Cause: No primary AC voltage inputs due to open fuses caused by Q406 shorting out.
Remedy: Replace F401, F402, Q406 & check/replace thermal resistor (R410) on the P board.
Common Problems
Parts list
1.Q406:
Part # - B1DEKQ000003
2.R410:
Part # - D1F5100E0003
3.F401 & F402:
Part # - K5D802BNA005
F401 & F40
2
R410
Q406
Thank You
For Completing Course Four
-END –
HAVE A NICE DAY