Philips DVP1013 Service Manual page 15

Distorted audio and loud noise
Check he power supply
voltages +12V and -12V to
the operation amplifyingr L7
andR19 are normal
Check whether the muting
transistors Q12, Q15, are
normal
Checking the U1 leads the feet
has no to break to open
Check whether the U7 or
U1 power supply normal
Replace U1, U7
Distorted audio and
loud noise
Yes
Yes
Yes
Yes
Yes
4-6
No
Replace R9 and R14
No
Replace Q12, Q15
No
Correct connection
No
Check U1, U7
T rouble shooting chart