Philips DVP3560K Service Manual page 19

Distorted audio and loud noise
Distorted audio and
loud noise
Yes
Check the power supply
voltages +12V
operation amplifying Q3 is
normal.
Yes
Check whether the muting
transistor R167
normal
Yes
Check whether the muting
transistor Q48,Q50,
normal
Yes
Checking the U12 leads
the feet has no to break to
open
Yes
Check the voltage on
pin3 or pin5 of U12 is OK
(Should be 2.5~3.1V)
Yes
Check whether the U1 or
U12 powersupply normal
Yes
Replace U20
No
to the
No
R152 are
are
No
No
No
5-7
Check Q3
Replace
R167 R152
No
Replace Q48,Q50,
Correct connection
Replace R76, CE38, C152
Check U12
Trouble shooting chart