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Display trouble（white screen）
White screen
Check the power supply
for panel
N
Y
Check the switch signal for
Check the output signal
Q24/AO3401(changed
Of U5
from 5~0V)
Y
N
N
Y
Change the LCD panel or
Check the circuit from U6/NT68F631 to Q24
Check U5
Check CN8 or change Q24
The cable to panel
or U6 had been damaged
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