Smps Power Troubleshooting - LG MBD-D102X Service Manual

ELECTRICAL TROUBLESHOOTING GUIDE OF AUDIO PART

10. SMPS POWER TROUBLESHOOTING

No .5.6VA
Is the F901 Normal?
Is the BD901Normal?
Is the TH901 Normal?
Is Vcc (10V - 18V)
supplied to IC911
Pin5 ?
IS the D965 normal?
Is the D962 Normal?
Is the D963 Normal?
Is the D964/5 Normal?
Is the D966 Normal?
Is the D967 Normal?
Power Line of Main PCB is short
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO Replace the F901
(Use the same Fuse)
NO
Replace the BD901
NO
Replace the R901
NO
Is the IC911 normal?
Check or Replace the
NO
Check line short
NO
Replace the D962
NO
Replace the D963
NO
Replace the D964/5
NO
Replace the D966
NO
Replace the D967
3-10
NO
IC911