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Panasonic Canada Inc.
5770 Ambler Drive
Mississauga ON
L4W 2T3Tech Tips
Product:
PLASMA TV
Number:
TT-08-27
Models:
TH42PX77
TH42PX75Code:
B62Model Year: 2007
Date:
April 21,2008
PCB Designation: P Board
Part #: TXN/P1HNTUS
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 and add C426 in the P board.
Parts list
1. Q406:
Part # - B1DEKQ000004
2. F401 & F402:
Part # - K5D802BNA005
3. C426:
Part # - ECQB1H103JZ
406
F402
F401
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Repair instruction procedure:
1) Replace Q406, F401 & F402.Remarks: Clean silicon sheet to remove any foreign material before installing new Q406.
2) Add C426 @ PCB foil side.
A. Put film capacitor C426 on PCB foil side.B. Solder pins of capacitor as shown in the photo below.
Heat sink
Silicon sheet Tighten screw
Torque 25~45Ncm
Soldering points
Caution point: Should not bridge
IC406
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C. Put silicon adhesive sealant to both leads of C426 to fix as shown below.
Notes:
Please purchase silicone adhesive sealant locally. Use silicone adhesivesealant part # KE-40RTV (manufactured by Shin-Etsu) or RTV133
(manufactured by MG Chemicals).
Please ensure to completely cover the entire leads with silicon adhesivesealant.
The height from PCB surface of C426 body must be < 4 mm and siliconheight must be < 5 mm.
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