LG 24MN42A Service Manual page 16

5. Abnormal screen (AV)-Main PCBA
Abnormal screen (AV)
1
Put into AV cable completely?
2
Is Input signal timing
and f ormat in spec?
3
Is wavef orm at R651
Change IC600
WAVEFORMS
3
R651 (CVBS)
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Only for training and service purposes
NO
YES
NO
YES
NO
YES
Change Timing to 480I, 576I
Check Line between JK101 and IC600
is open or short, Another is
- 16 -
Insult AV cable tight
Or change f ormat CVBS
change AV cable
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