Vdr Part; Power(Smps) Circuit - LG LGXBR342 Service Manual

VDR ELECTRICAL TROUBLESHOOTING GUIDE

1. Power(SMPS) CIRCUIT

No 3.7VA
NO
Is the F101
Normal?
YES
NO
Is the BD101
Normal?
YES
NO
Is the TH01
Normal?
YES
NO
Is Vcc (11V - 18V)
supplied to IC101 Pin3?
YES
NO
Are the D122
normal?
YES
NO
Is there about 2.5V
at the IC106 Pin1?
YES
NO
Is the D123
normal?
YES
NO
Is the D124
Normal?
YES
NO
Is the D125
Normal?
YES
Power Line of Main
PCB(VDR) is short

VDR PART

Replace the F101
(Use the same Fuse)
Replace the BD101
Replace the TH01
Is the D104
normal?
NO
Check or Replace
the D104
Replace the D122
Replace the IC106
Replace the D123
Replace the D124
Replace the D125
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