LG Flatron L1953H - NO RASTER (OSD NOT DISPLAYED) - MSTAR

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3. NO RASTER (OSD IS NOT DISPLAYED) – MSTAR
NO RASTER
(OSD IS NOT DISPLAYED)
NO
NO
NO
TROUBLE IN CABLE
OR LCD MODULE
CHECK U202
1. CHECK C108, C109
SOLDERING CONDITION
2. CHECK X101
3. TROUBLE IN U101
CHECK CONNECTION
LINE FROM D-SUB TO
U101
U201
PIN96, 97
OSCILLATE AS
14.31MHZ?
U101
PIN27 IS 48KHz H-SYNC?
PIN28 IS 60Hz V-SYNC?
IS PULSE APPEARED
AT SIGNAL PINS?
AT MODE 12?
1
2
1 2
Waveforms
U201-#96, 97 U101-#27 H-SYNC
2
U101-#28 V-SYNC
YES
YES
YES
U201
PIN 16, 76
3.3V?