LG SNC4R - Adapter Power Circuit; Electrical Troubleshooting Guide

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ELECTRICAL TROUBLESHOOTING GUIDE
IC301 is not 3.3 VA
Check F301 Voltage 25 VA
Check FB305 Voltage 5.1 VA
Check Adapter
Replace Main PCB
YES
YES
YES
NO
NO
Check FB304 Voltage 12 VA
Check R308 Voltage 3.3 VA
Replace Main PCB
Replace Main PCB
YES
YES
NO
NO
OK
1. ADAPTER POWER CIRCUIT