Philips DVP520/00 Service Manual page 12

All output voltages on the power board is 0V or deviated.
All output voltages on the
power board is 0V or deviated.
Yes
Check whether
F201 is blown
No
Check whether there is
300V on C203.
Yes
Check whether 100KHz
oscillating signal
Pin3 of U201
Yes
Check if +5V, +3.3v, +12V,
-12V and -24V are short.
Yes
Check whether the components in the
short-circuit voltage are defected or eroded.
4-3
Yes
No
No
on
No
Replace F201
1.Check D201, D202, D203, D204.
2.Replace C203 if D201, D202, D203, D204
are normal.
Check/ replace U201.
U201(PIN 3 - RC waveform)
Check whether U202 and U203
are eroded.
Trouble shooting chart
U201(PIN 8 - Drain waveform)