Troubleshooting - Sanyo PDP-42WV1 Service Manual

I Troubleshooting
No Power
Refer to Schematic Diagram or Power Supply Line, find out the part of trouble.
Before opening Cabinet Back, check the AC cord and power source.
Is LED flashed?
Yes
Is
the voltage of
all lines in Power Unit
supplied?
Yes
(or the voltage of some
lines is not supplied.)
After few seconds,
the set is switched off.
Check 'Fail' Circuit to refer service
manual 'Power Fail Circuit'.
No
fuse (F601/602)
in Power Board
broken?
No
(All 0V)
Check D659 or IC651 in
Power Board.
Is
Yes
Check VA601 in Power
Board.
Main Power Module is
broken.
No
Check '5V_Standby' line
from Power Board to Main
Board.
Check PTH651 in Power
Board.
-22-
Check arround Sub CPU
(IC801) in Main Board.
Main Power Module is
broken.