LG Flatron L1900J - 3. NO RASTER (OSD IS 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 IC102
1. CHECK C109, C110
SOLDERING CONDITION
2. CHECK X101
3. TROUBLE IN IC101
CHECK CONNECTION
LINE FROM D-SUB TO
IC101
IC101
PIN127, 128
OSCILLATE AS
14.31MHZ?
IC101
PIN32 IS 48KHz H-SYNC?
PIN33 IS 60Hz V-SYNC?
IS PULSE APPEARED
AT SIGNAL PINS?
AT MODE 12?
1
2
1 2
Waveforms
IC101-#127, 128 IC101-#32 H-SYNC
2
IC101-#33 V-SYNC
YES
YES
YES
IC101
PIN 7, 8
3.3V?