Philips DVP2898 Service Manual page 20

All output voltages on the power board is 0V or deviated.
All output voltages on
the power board is 0V or
deviated
Check whetherthere is
300V on C501 or C502.
Check whether 100KHz
oscillating
Pin4 of U501
Check if +5V short.
Check whether the components in the
short-circuit voltage are defected or eroded.
Yes
Check whether
F501 is blown
No
Yes
signal on
Yes
Yes
4-3
Yes
Replace F501
Replace C501&C502 if D501, D502,
No
D503, D504 are normal.
No
Check/ replace U501.
U501(PIN 4 - Drain waveform)
No
Check whether U501 are eroded.
Trouble shooting chart