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50PV400-UB, 50PV430-UC, 50PV450-UA (CHASSIS:PU14K) - LG TV Service Manual (repair manual). Page 38

Read LG 50PV400-UB / 50PV430-UC / 50PV450-UA (CHASSIS:PU14K) Service Manual online

Great Company  Great People
Check input signal format
Is it supported?
Check signal, Hsync, Vsync
R666, R667
Replace R645, R646.
Check signal
R58, R59, R60
Y
Y
N
Check JK601
Replace connector (JK601).
Y
N
Y
Replace R15, R17, R18.
N
Replace Mstar(IC1)
Y
Check Signal
C14, C16, C17
Replace C14, C16, C17.
N
Check RGB Cable conductors for 
damage
Y
※ Measured signals depend on the input signal.
RGB Video
Trouble Shooting Guide
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