LG Flatron M3200C Service Manual page 15

2. CHECK T-CON BOARD
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2. NO RASTER(OSD IS NOT DISPLAYED)
NO RASTER
(OSD IS NOT DISPLAY)
CHECK U402
OUTPUT WAVE?
YES
CHECK
INVERTER VOLTAGE
( 12V,24V)?
YES
CHECK
MODULE INPUT
WAVE?
YES
1. CHECK INVERTER
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NO
CHECK THE PERIPHERAL IC
NO
CHECK WAFER AND POWER
NO
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U402
BOARD
CHECK
MODULE LINK CABLE