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Distorted audio and loud noise
Distorted audio and
loud noise
Yes
Check the power supply
voltages +12V and -12V to
the operation amplifying Q2
andQ3 are normal.
Yes
Check
the
supply voltages from
the R8 and R14 .
Yes
Check whether the
muting transistor
Q19,Q22, are normal
Yes
Checking
the
leads short or open
No
Check whether the
U13
power supply
is normal
Yes
Replace U13
No
power
No
No
Yes
U13
No
4-6
Check Q2and Q3
Replace R8 and R14
Replace Q19,Q22
Re-soldering
Check the +12V,-12V
Trouble shooting chart
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