JVC TV-13142 Service Manual page 34

TV-13142
TV-13142W
GOOD PICTURE BUT NO SOUND
Is the sound output at
CD352 changed with the
volume up or down key?
No
Is the voltage at pin 5
of IC351 DC8.2V ?
Yes
Is the voltage at pin 6
of IC351 DC 3.5V?
No
Is the voltage at pin 2 of
IC351 changed from DC
0.3V to DC9.9V when
pressing VOLUME UP or
DOWN key?
Yes
Check pin 50 of IC601 and the
peripheral circuit.
34
TROUBLESHOOTING GUIDE
Yes
No
Yes
No
Check SPEAKER.
Check D505 and D508.
Check CD353 sound out line.
Check C355 and the peripheral circuit.