LG 42LV4400 Service Manual page 68

HDMI
( ) IS NOT DISPLAY CORRECTLY
Start
Input signal good?
U46 no data out ?
1.Is TCN1& TCN2 connected good?
2.Is panel working ok?
END
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CONFIDENTIAL DO NOT COPY
N0
N0
Yes
Yes
Yes
1.Check video
2.Check host's setting
1.Check U46 power
2.Check between signal U15
3.Check U15 clock 54MHZ
Page 9-4
File No. SG-0000034