Read LG 42PT350B-SA (CHASSIS:PB11K) Service Manual online
2. No OSD Trouble Shooting
Replace Power board
N
Y
Check 5V Voltage Level
at P500
Check Power connector
Y
Check 5V Voltage Level at Q501
N
Replace one of Q501
& Recheck
Y
Check P903
(TXAC-), (TXAC+), (TXBC-),
(TXBC+), Display Enable
N
Y
Check LVDS Cable
N
Replace Cable
Y
Check PDP Module
Check 5V Voltage Level
at L507, L501
N
Replace one of L507,501
& Recheck
Y
Maybe S7(IC101)
has troubles
It should satisfy the
Pixel Clock
on CAS.
Electrical Specifications
Power Supply Sequence
Input Signal Timing Specification
Control Signal Register
Power Supply Sequence
Input Signal Timing Specification
Control Signal Register
Check CAS
Check P500
5V_ON
Check GPIO Path of Micom
N
Y
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