Philips DVP1120 Service Manual page 17

Distorted audio and loud noise
Distorted audio and
loud noise
Yes
Check the power supply
voltages +12V
to the decode board are
normal.
Yes
Check
resistors R65 andR67
are normal
Yes
Check
muting
Q17,Q18, are normal
Yes
Checking the U14 leads
the feet has no to break
to open
Yes
Check whether the U1
or U14 powersupply
normal
Yes
Replace U1 or U14
and -12V
whether the
whether the
transistor
4-6
No
No
Replace R65 and R67
No
Replace Q17~Q18
No
No
Check U14
Trouble shooting chart