LG MDS64V, Service Manual

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3-1
1. POWER (SMPS)
AUDIO ELECTRICAL TROUBLESHOOTING GUIDE
POWER (SMPS)
NO
Replace the fuse
YES
Check the fuse
F901
NO
Check BD901, LF901, 902
NO
Check short of P9702 line
Check short of
P9701, P9702 line
NO
Check short of P9701 line
NO
Replace IC901,902
YES
Check
the DC V of C905
if DC V is over
400V
NO
YES
Check the
DC V of C909,C903,C921
If DC V is in 14~19V
and it is steady
Check IC901, 902
YES
YES
Check the
DC V of C981, C945
If DC V is 6.1V
YES
Check the
DC V of C950,C951
If DC V is in
31.68V
YES
OK
SECTION 3. ELECTRICAL PART