Philips DVP3126K - Audio distortion and noise

4-7
Distorted audio and loud noise
No
Yes
No
Yes
Yes
No
Distorted audio and
loud noise
Replace R176 and R175
Check Q27
Replace Q17~Q18 ,Q40~Q43
Check whether the muting
transistor R176 and
R175 are normal.
Yes
Check whether the muting
transistor Q17~Q18,Q40~Q43
Q42 are normalˈ
Checking the U1
leads the feet has no
to break to open
Correct connection
No
Yes
Check the power supply
voltages +12V to the
operation amplifying Q27
and -12V are normal.
Replace U1
Trouble shooting chart