Troubleshooting 10 Blinks Condition Power On - Panasonic TH-42PX80U Service Manual

Troubleshooting 10 blinks Condition At Power On
These 5 conditions can cause the TV to shutdown and the power LED to blink 10 times
1. Missing/Shorted F_STB_15V
2. Shorted P15V
3. Missing/Shorted SUB9V, SUB5V, and SUB3.3V
4. Missing Vda (Shorted Vda causes 5 blinks)
5. Wrong diagnostic by the A board
Note: The P15V and the F_STB_15V are created by the same circuit in the power supply circuit. A
shorted P15V, normally causes the TV to shut down and the power LED to blink 2 times.
Sometimes a shorted P15V affects the F_STB_15V and this causes the TV to shutdown making the
power LED blink 10 times.
To troubleshoot a PDP TV that is shutting down and the power LED blinks 10 times:
Isolate the SC and the SS boards (They may cause a 10 blinks shutdown). Disconnecting P6
and P7 allows for only the panel drive section to be driven. If the LED on the SS board and
the LED on the SC board are lid, then the SS and the SC boards are OK and the A board is
suspected to be defective
If the LEDs on the SS and SC boards are not lid, then isolate them one at time.
If the SS and SC boards are OK, then the P board may be defective.
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