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