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Haier LE86H9000U Service Manual page 29

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Display Trouble
—— 3. black screen
NG
Check BL_ON
Signal(5V/3.3V)
OK
Change software or change
MSD6488MVE
NG
Check the ADJ/PWM
singnal
OK
Change software or
change MSD6488MVE
Check the power supply
for inverter

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