LG SJ2 - Led Part

4-4
ELECTRICAL TROUBLESHOOTING GUIDE
2. LED PART
YES
YES
YES YES
NO
YES
LED part
Check LD202 network, the device
a short circuit will cause no output.
Check SMPS.
Replace IC300.
Replace Wireless module.
Replace LD202.
NO
NO
NO
Check Wireless module.
Check MD200 pin1
voltage 3.3 V.
Check C940
voltage 24 V.
Check LD202.