Read LG 42PG20-UA (CHASSIS:PU84A) Service Manual online
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TROUBLE SHOOTING GUIDE
No OSD Trouble Shooting
Check P302
#33(TXAC-) , #32(TXAC+) ,
#17(TXBC-) , #16(TXBC+)
Maybe Mstar has problems
Check LVDS Cable
Check PDP Module
Control board
Refer to Module CAS
Y
N
Y
Replace Cable
N
Y
Check PDP Vs,Va Voltage
Module 5V
Replace Power
N
Check P701 Disp_EN,
VaVs ON, 5V_MNT
Check GPIO Path
N
Y
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