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TH-42PH20E

1. Subject

Information of LED Blinking timing chart.

2. Contents

When an abnormality has occurred to the unit, the protection circuit operates and resets to the stand by mode. At this time,
the defective block can be identified by the number of blinks of the Power LED on the front panel of the unit.

*

 Refer to 7.1.1 Display Indication

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TH-42PH20E

First check point
There are following 3 states of No Power indication by power LED.

1. No lit.
2. Green is lit then turns red blinking a few seconds later.
3. Only red is lit.

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TH-42PH20E

Plasma display may have local area failure on the screen. Fig - 1 is the possible defect P.C.B. for each local area.

Fig - 1

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TH-42PH20E

• To disassemble P.C.B., wait for 1 minute after power was off

for discharge from electrolysis capacitors.

•

,  , 

,   and   marks indicate screw positions.

1. Remove screws (

×17 , 

×23  ) and M8 CAP (×4 )

then remove the Rear Cover. 

1. Disconnect the connectors (DS13, P9).
2. Remove the flexible cable from the connector (DS1).
3. Remove 4 screws and then remove the Slot Block.

1. Remove the Slot Block.

(Refer to Removal of Slot Block)

2. Turn over the Slot Block.

3. Remove 6 screws and then remove DS-Board.

1. Disconnect the connector (A14).
2. Remove 2 Hexagonal-Head screws, 5 screws ( ) and 2

screws ( ) and then remove the HX-Board Block.

3. Turn over the HX-Board Block.
4. Disconnect the connector (HX1).
5. Remove 4 Hexagonal-Head screws and 1 screw of HX-

Board and then remove HX-Board.

1. Remove the HX-Board Block.

(Refer to Removal of HX-Board)

2. Disconnect the connectors (A8, A9, A10, A11, A12, A13,