Smps Power Circuit; Main Part - LG FB162-A0U Service Manual

10. SMPS POWER CIRCUIT

*MAIN PART

Check the fuse F901
YES
Check the DC V of C905.
If DC V is over 400V
YES
Chcek the DC V Of
C909,C903,C921 If DC V is
in 14~19V and it is steady.
YES
Check the DC V Of
C981,C945. If DC V is 6.1V
YES
Chcek the DC V Of
C950,C951 If DC V is in 29V
YES
OK
LGE Internal Use Only
NO
Replace the fuse
NO
Check BD901,LF901,902
NO
Check IC901,902
YES
Check short of P9701,
P9702 line
NO
Check short of P9702 line
NO
Check short of P9701 line
4-10
NO
Replace IC 901,902
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