Read LG 50PJ350-SA (CHASSIS:PB02A) Service Manual online
Customer Oriented R&D
Breakthrough
6. RGB Video Trouble Shooting
Check Signal Format
Is it supported signal?
Y
Check RGB Jack P901
N
Y
Y
Check RGB Cable
Replace Jack
Check RGB Signal
R907,R908,R909
N
Replace It & Recheck
Y
Check Sync Signal
N
Replace one of R915/R916
& Recheck
Y
Check EEPROM (IC901)
N
Replace it or re-burn
& Recheck
Y
Maybe Mstar S7(IC101)
has problems
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