Troubleshooting 10 Blinks Condition At Plug In - Panasonic TH-42PX80U Service Manual

Troubleshooting 10 blinks Condition At Plug in

These 3 conditions can cause the TV to shutdown and the power LED to blink 10 times
1. Missing/Shorted F_STB_15V
2. Missing/Shorted SUB9V, SUB5V, and SUB3.3V
3. Wrong diagnostic by the A board
Note: When taking voltage reading, place the voltmeter probe at the test point, component, or
connector's pin indicated before connecting the TV to the AC line. This will ensure voltage reading
accuracy before the TV shuts down.
To troubleshoot a PDP TV that is shutting down and the power LED blinks 10 times:
Find out if 15V is output at pin 7,8,or 9 of connector P6 of the P board. If no voltage is output,
the P board may be defective.
If the F_STB_15V voltage is OK, it's likely that the A board is defective.
Since some of the Sub-voltages generated by the A board are connected to the K, GS, and
GH boards, it's also likely that one of these board may cause the unit to shut down and the
power LED to blink 10 times.
Disconnect connector A1/K1 to isolate the K board.
Disconnect connector A/52GS52 to isolate the GS board.
Disconnect connector A11/GH11 to isolate the GH board.
The defective board is found when the connector that provides the Sub-voltages to that board
is removed and the TV no longer shuts down.
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