LG LHB976 Service Manual page 110

WIRELESS RECEIVER ONE POINT REPAIR GUIDE
2-2. AMP POWER
AMP Vcc doesn't work. (abnormal Sound)
2-2-1. Abnormal sound
2-2-1-1. Solution
Refer to the How to troubleshoot (Countermeasure).
2-2-1-2. How to troubleshoot (Countermeasure)
Case 1) 35 V abnormal: Replace PC902 or PC903 on SMPS board.
Case 2) 35 V abnormal: Replace IC902 / Q902 or D950 on SMPS board.
2-2-1-3. Service hint (Any picture / Remark)
Case 1
(PC902,903)
Case 1
(PC902)
Case 2
(IC902)
Case 1
(PC903)
< SMPS board top view >
2-95
Case 2
(D950)
W
Pa
re
Case 2
(D950,IC902)