LG 15LC1R-ZG Service Manual page 18

No Raster on AV Signal
(SCART, CVBS, S-VHS)
Repeat
[A] Process
Pass
Check the signal of
L108, L109, L110, L112
R194, R198, R184
Pass
Check the
input/output of U301
Pass
Check the
input/output of U101
Pass
Check input source cable and jack
No Raster on TV(RF) signal
Check the output of
TU701
Fail
Change L108, L109,
L110, L112, R194, R198,
Fail
R184
Re-soldering or
Change the defect part
Fail
Check X301
Re-soldering or
Change the defect part
Fail
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Check 5V, 33V of TU701
Re-soldering or
Fail
Change the defect part