LG FLATRON L1780Q

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2. NO RASTER (OSD IS NOT DISPLAYED) – LIPS
CHECK POWER
ADAPTER 12V
J603 PIN-1,2 12V ?
NO
NO RASTER
(OSD IS NOT DISPLAYED)
CHECK U201
PIN-68 HIGH
J603 PIN-7 3V ?
NO
CHECK U201
NO
U201 PIN-67 HIGH?
NO
CHECK U201
NO
CHECK INVERTER
CHECK INVERTER
LAMP PULSE
NO
REPLACE LCD MODULE
YES
YES
YES
YES
J201 PIN-1,2 3.5V ?
U403 IC CHECK
YES