LG FLATRON E2040S - TROUBLESHOOTING: NO RASTER (MSTAR); SCALER AND SYNC SIGNAL ISSUES; COMPONENT AND CONNECTION FAULTS

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3. NO RASTER (OSD IS NOT DISPLAY)-MSTAR
1. Check C416 C417
2. Check X401
3. Trouble in Scaler IC
Scaler pin 63, 64
oscillates as
12MHz?
No Raster
(OSD Is Not Displayed)
Check connection line from
D-SUB to Scaler
Trouble in cable or LCD
module
NO
YES
YES
NO
Scaler IC
pin 14 H Sync ?
pin 15 V Sync?