LG Flatron W2486L - No Raster (Mstar;Signal Issues)

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Only for training and service purposes
LGE Internal Use Only
3. NO RASTER (OSD IS NOT DISPLAYED) – Mstar
NO RASTER
(OSD IS NOT DISPLAYED)
NO
NO
NO
TROUBLE IN CABLE OR
LCD MODULE
CHECK ADAPTER AND FIND OUT
A SHORT POINT AS OPENING EACH
POWER LINE
CHECK REGULATOR AND FIND OUT
A SHORT POINT AS OPENING EACH
POWER LINE
CHECK CRYSTAL( X101)
CHECK ADAPTER
INPUT VOLTAGE 4PIN
OF JK300( 12V)
CHECK IC301
PIN2(1.8V) AND
CHECK IC302 PIN2(3.3V)
CHECK PULSE OF
IC101 P25, P26
YES
YES
YES
NO
CHECK CONNECTION LINE FROM
IPUT SIGNAL LINE
CHECK h sync and v sync
of input line( RGB, DVI
,HDMI1,HDMI2 )
YES