LG MDT505 - No Audio Troubleshooting

3-3
ELECTRICAL TROUBLESHOOTING GUIDE
YES
YES
No sound.
Replace IC961, IC901 or
SMPS board.
Check no power list, AC input voltage.
Check AMP module short.
Replace PC951, IC901.
NO
NO
Check IC961
Vcc voltage(34 V ~ 43 V).
Check C955 voltage
(25 V or 36 V).