Main Set Troubleshooting - LG LHB976 Service Manual

MAIN SET TROUBLESHOOTING

No 36 VA / 26 VA
YES
Is the Q901 normal?
YES
Is D928 normal?
YES
Is IC902 normal?
YES
Is the Vcc
(11 V ~ 25 V) supplied to IC902
pin7?
YES
Power line of MAIN or AMP board is short.
NO
Replace Q901(same fuse).
NO
Replace D928.
NO
Replace IC902.
NO
Is Q910 normal?
Check or replace Q910.
2-99
YES