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Philips DVP3110 Service Manual page 13

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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
F1 is blown
No
Check
whether
there is 300V on C4.
Yes
Check whether 100KHz
oscillating
signal
Pin6 of U1
Yes
Check if +5V, +12V, -12V
are short.
Yes
Check whether the components in the
short-circuit voltage are defected or eroded.
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4-3
Yes
Replace F1
No
Replace C4 if D1, D2, D3, D4
are normal.
No
on
U1(PIN 3 - RC waveform)
No
Check/ replace U1.
U1(PIN 8 - Drain waveform)
Check whether U2 are eroded.
Trouble shooting chart

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