Sanyo P50842-00 Troubleshooting Manual page 7

Repair Flow Chart:Trouble Condition
Power LED turns OFF within 10 seconds after the TV power turns
Power LED turns OFF within
10 seconds after TV power
turns on.
For analog board:
Is 3.3V supplied to"K8B Pin1"during
LED power on ?
Yes:3.3V
Unplug cable from digital board
to T.Cnt.board whether the
symptom changed?
No
For power board:
Is the 5V supplied from "CN2 Pin8/9 "
during LED power on?
Digital board can not work.
Analog board may also do not work.
Replace "digital board and analog board".
No:0V
For digital board:
Is 3.3V supplied to "K5A Pin44"?
Yes:3.3V
Analog board can not work.
Replace "analog board".
Yes
T Con board can not work.
Digital board may also can not work.
Replace "T Con board&digital board".
No:0V
Power board can not work.
Replace "Power board."
No:0V
Digital board can not work.
Replace "digital board".
on.
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