Read LG 47SL90QD-AA (CHASSIS:LB91L) Service Manual online
Making
Revision
2009. 2 . 1
25/25
LCD TV
Symptom
Intelligent Sensor Problem
Check MAIN B’D P5001
Revision
Check IR B’D P1 Wafer
& Connector
Check MAIN B D P5001
Wafer & Connector
YES
YES
NO
Replace it
Replace IR B’D
& Connector
YES