LG Flatron W2242T

2. NO RASTER (OSD IS NOT DISPLAYED) – LIPS
CHECK U501 INVERTER
ON/OFF PORT
J703 PIN9 5V?
NO RASTER
(OSD IS NOT DISPLAYED)
CHECK POWER BOARD
(LIPS)
CHECK J703
VOLTAGE PIN5,6
(5V)?
NO
NO
NO
NO
1. CONFIRM BRIGHTNESS
OSD CONTRL STATUS
2. CHECK MICOM DIM-ADJ
PORT
CHECK J703
PIN10
POWER BOARD (LIPS)
CHECK
PULSE AS
CONTACTING PROBE
TO THE LAMP
WIRE OF THE
LCD MODULE
REPLACE LCD MODULE
YES
1
2
3
YES
YES
YES
Waveforms
1
J703-#5,6
2
J703-#10
3
LAMP CURRENT
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