Read LG 42SL90QD-DA (CHASSIS:LT91L) Service Manual online
Making
전자 - 6-2
Revision
2009. 2 . 1
LCD TV
Symptom
Analog TV Video Problem
4/25
Check RF Cable
MAIN B’D L1111 = 5V ?
YES
MAIN B’D L1112 = 3.3V ?
NO
Replace MAIN B’D IC1103
YES
NO
Replace MAIN B’D IC808
MAIN B’D L1113 = 1.8V ?
Replace MAIN B’D IC1105
YES
NO
YES
MAIN B’D X1101 Clock ?
NO
Replace MAIN B’D X1101
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