Section 2. Electrical - LG DKS-5500 Service Manual

SECTION 2. ELECTRICAL

❏ ELECTRICAL TROUBLESHOOTING GUIDE
POWER Check flow
No VF+
A.
YES
Is 5.2VA section working?
YES
Check F102
YES
Replace D109.
NO
YES
No 5.2VA
YES
Check F101
YES
Is there a DC voltage
at R101?
YES
Is there a DC voltage At(+)
terminal of BD101?
YES
Replace IC101.
- 2-1 -
No 5V_A.
B.
YES
NO
Is 5.2VA section working?
YES
NO
Is 5.2V present at
emitter of Q107?
YES
Replace Q107.
YES
NO
Replace R101.
YES
NO
Replace BD101.