LG LM-U360, Service Manual

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SMPS POWER CIRCUIT
Check the fuse F901
Check the DC V of C905.
If DC V is over 400V
Check the DC V Of
C981,C945. If DC V is 6.1V
OK
Chcek the DC VOf
C950,C951 If DC V is in
35V,-35V
Chcek the DC V Of C909,
C903,C921 If DC V is in
14~19V and it is steady.
Replace the fuse
Check BD901, LF901,902
Check IC901 ,902 Replace IC 901,902
Check short of P9702 line
Check short of P9701 line
Check short of P9701,P9702
line
*MAIN PART
YES
NO
YES
YES
YES
YES
YES
NO
NO NO
NO
NO