LG FAS166F - Electrical Troubleshooting Guide; Power (Smps)

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ELECTRICAL TROUBLESHOOTING GUIDE
1. POWER (SMPS)
Power (SMPS)
Replace IC901, IC954.
Replace the fuse.
Check short of CN901 line.
Check BD901, LF901, LF902.
Check short of CN902 line.
Check short of
CN901,CN902 line.
Check the
DC V of C912,C920,C914
If DC V is in 14~19V
and it is steady.
Check the fuse
F901.
Check the
DC V of C959,C960.
If DC V is 3.7V.
Check
the DC V of C901
if DC V is over
400 V.
Check the
DC V of C962,C963
If DC V is in
31.68V.
NO
NO
NO
NO
NO
NO
Check IC901, IC954.
YES
YES
YES
YES
YES YES
OK