5. Inverter Board
No Backlight
Check CN801 Pin1 =12V
Check ON/OFF signal
Check U801 PIN3 voltage is normal?
Check U801 PIN18 triangular
wave is normal
OK
Check U801 PIN11, 12, 19, 20
Check D801-D804, D811,
D805, D810, D808
OK
OK
OK
OK
NG
Check adapter
NG
Check Interface board
NG
Check Q804,Q803,Q802 circuit
NG
Check C816, C821
NG
Check U801,Q801, Q805, Q806, Q807
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