LG SPJ2B-W - Electrical Troubleshooting Guide; Smps Power Circuit

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ELECTRICAL TROUBLESHOOTING GUIDE
1. SMPS POWER CIRCUIT
YES
YES
YES
YES YES
NO
YES
No 23 V
The IC902 is short.
Replace F900 (same fuse).
Replace BD900.
OK
Replace NTC900.
Check or replace IC900.
NO
NO
NO
NO
F900 normal?
BD900 normal?
Is the Vcc (16 V~17 V)
supplied to IC900 pin6?
IC900 normal?
NTC900 normal?