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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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