Electrical Troubleshooting Guide; Power Check Flow - LG DVX286 Service Manual
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Also See for DVX286:
- Owner's manual (44 pages) ,
- Owner's manual (89 pages) ,
- Owner's manual (89 pages)
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ELECTRICAL TROUBLESHOOTING GUIDE
1. POWER CHECK FLOW
A.
No 5V
Is 3.3VA section working?
YES
Is 5.6V present at collector
of Q126?
YES
Replace Q126.
NO
No 3.3VA
Check FR101
Is there a DC voltage at
Cathode of D105 or D107?
Replace IC101.
3-2
B.
NO
NO
NO
YES
No 3.3VA.
Is 3.3VA section working?
YES
Is 3.3V present at emitter
of Q121?
YES
Replace Q121.
YES
Check D105/D106/D107/
D108 and replace.
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