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19LS4R (CHASSIS:LP69C) - LG TV Service Manual (repair manual). Page 16

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- 16 -
3. No RASTER on PC Signal
Repeat [A, B]
process.
Pass
Check the input/
output of R735,
R736.
Fail
Check the J701.
Pass
Re-soldering or change the
defect part, Check the X100.
Check
the input/output
of R128, R131,
R136.
Pass
Check the
input/output of IC100.
Pass
Check input source cable and jack.
Fail
Fail
Re-soldering or Change
the defect part.
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