Service Manuals, User Guides, Schematic Diagrams or docs for : panasonic Plasma TV TX-P46GQ21 Picture Block Noise Audio Droputs on DVB-Signal MQM0041DG200411REV5_Picture_Block_Noise_Audio_Droputs_On_DVB-S_Signal
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Confidential
For Authorised Service Agents Only Ref No: MQM0041DG200411REV5
TECHNICAL INFORMATION
A BY D EST H IS N PL SK UA Date 17/06/2010
AL CH DK F I L NL RO SLO FIN Country Reported
B CZ E GB IRL LT P S TR Germany
Product Category: Plasma Television / Plasma IDTV
Subject: Picture block noise and audio dropouts on DVB-S signal.
Model(s) Affected: TX-P42/46/50GW20 TX-P42GS21 TX-P42/50V20E TX-P42/46VT20E
TX-P42GF22 TX-P42GT24 TX-P50V20L Chassis: GPF13DE
TX-P42GN23 TX-P46GQ21 TX-P42GT20E
Symptom / Cause: When watching some satellite HD channels, there is a possibility of picture block noise and
audio dropouts occurring during the first 15 minutes after switching on the set.
Remedy / There are two different modification methods and one common step.
Method: Method 1 Method 2
Part 1 Exchange the XS-PCB assembly OR Modify the XS-PCB assembly
Part 2 Change the internal wire dressing
See page 3 for applicable serial numbers
Please confirm with your local Panasonic Support section regarding the service policy for the XS-PCB.
Method 1: Exchange the XS-PCB Assembly
Part 1: Order a replacment XS-PCB (Part number: TXFUX01LQUEG) and return the original XS-PCB.
Part 2: Change the internal wire dressing. See page 3 for details
Method 2: XS PCB Assembly Modification
Part 1: Step 1: XS PCB Modification
Check the suffix on the PCB label (Fig. 1):
If the suffix on the label is "AC", then proceed to "Part 1: Step 2:" (page 2)
If the suffix on the label is "AB", then replace the capacitors on the original XS-PCB with new parts
as indicated below:
Fig.1: label with suffix "AC"
Ref. No. Part Number Description
C6700 F1H1A225A051 2.2uF, 10V, 10%
C6708 F1H0J475A041 4.7uF, 6.3V, 10%
C6711 F1H0J475A041 4.7uF, 6.3V, 10%
C6714 F1H0J475A041 4.7uF, 6.3V, 10%
C6732 F1H0J475A041 4.7uF, 6.3V, 10%
See page 2 for locations.
Warranty Claims - Please use the following IRIS and Activity codes
Activity Codes: Guarantee Status Repair Type Location Source
(UK Only) A R W D
Symptom Section Defect
Condition Repair
IRIS Codes: Area Type Code Area Code Area Code
C 2 2 226 1 ANT 2 T1 i
Note: Failure to use the correct IRIS and Activity codes may result in the claim being rejected
Document No: MQM_TI
Panasonic 1 of 3 Rev: 10.00 DG220710
Confidential
For Authorised Service Agents Only Ref No: MQM0041DG200411REV5
TECHNICAL INFORMATION
Part 1: Step 1: XS PCB Modification (Continued)
Capacitor locations
C6711
C6714
C670
C6708
C6732
Part 1: Step 2: XS PCB Bracket Modification
Add gaskets and felt from Service Kit part no: TZS9EK091-1, according to the instructions below.
Service Kit TZS9EK091-1 contains:
Item Part Number QTY Description T x W x L (mm)
1 TEWB598 2pcs Gasket 4 x 10 x 15 5
2 TEWB514 1pc Gasket 3 x 7 x 35
3 TEWB397 1pc Gasket 20 x 20 x 30
4 TMK0E102 1pc Felt 0.5 x 20 x 60 2
5 TEWB567 1pc Gasket 30 x 20 x 60
3
1
no gap Add Gaskets 1
TEWB598 (T4*W10*L15) - 2pcs
4
A B
4
A 1 B
Remove existing gasket (white dashed line)
and add Felt 4 TMK0E102 (T0.5*W20*L60)
Note Felt 4: Start sticking from edge
"A" and then bend over edge "B"
Add Gasket 2 2
TEWB514 (T3*W7*L35)
02mm
Add Gasket 3
TEWB397 (T20*W20*L30)
POSITIONAL LINE
3
Document No: MQM_TI
Panasonic 2 of 3 Rev: 10.00 DG220710
Confidential
For Authorised Service Agents Only Ref No: MQM0041DG200411REV5
TECHNICAL INFORMATION
Part 1: Step 2: XS PCB Bracket Modification (Continued)
Add Gasket 5
TEWB567 (T30*W20*L60)
5
move clamper
TMME292
Part 2: Wire Dressing
Dress the wires according to Fig 4
Fig 4
SS PCB
5 Route the wires through
A6 A7 the moved clamper
Wires must go under the
big gasket TEWB567
Ensure the wires are
routed away from the
SS PCB
Note: This Technical Information applies to units prior serial numbers as follows:
Models Serial Number
TX-P42GW20 F*-0612001
TX-P46GW20 F*-0610953
TX-P42GT20E F*-0620001
TX-P42/46VT20E F*-0620001
other models F*-0610001
all units after this serial number have been modified.
Document No: MQM_TI
Panasonic 3 of 3 Rev: 10.00 DG220710
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