Read LG 50PT330-UB / 50PT350-UD / 50PT350C-UD (CHASSIS:PU14K) Service Manual online
Check input signal format
Is it supported?
Y
Check JK501 / JK502 / JK503 for
proper connection or damage
Replace connector
Y
N
Y
Check HDMI Cable for damage or open
conductors
Check EDID EEPROM
(IC502, 503, 504)
Power(#8) & I2C Signal (#5, #6)
Replace Mstar(IC1)
N
Check HDCP (IC501)
Power(#8) & I2C Signal (#5, #6)
Replace IC502, 503, 504
Y
N
Replace IC501
Y
N
Check Mstar(IC1)
HDMI Video
Trouble Shooting Guide
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