LG Flatron W1943SB - Troubleshooting - No Raster (LIPS)

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2. NO RASTER (OSD IS NOT DISPLAY)-LIPS
LIPS
YES
1. Check C704
2. Check C706, C705
3. TROUBLE IN SCALER IC
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No Raster
(OSD Is Not Displayed)
Check U701
PIN 2 =3.3V?
Check CN404
PIN 6, PIN7 =5V?
Check power board and find out a
short point as penning each power
line
1. Check U701
2. Check C702
Check C707 (+)
1.8V?
NO
NO
NO
YES
YES
YES
Check CN404
PIN 6, PIN7 =5V?
NO
Check BL ON/OFF pulse as
contacting scope
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