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Service Manual
No Backlight of panel
Check voltage of C804-14V？
OK
Check ON/OFFsignal
OK
Check IC801 -11pin=5V
pinRT waveform?
OK
Check IC801-3pin CT waveform?
OK
Check IC801-out6/8/9/10pin?
OK
Check Q802
OK
Check T801 out voltage?
OK
Check feedback circuit
Check pin12/13/14/15
NG
NG
Check main board
NG
NG
waveform
?
NG
Check flow chart for the
Inverter No Backlight
Open J812, voltage-14V
OK
After Power off,check
C811/C804？Q805/Q806?
After Power off,check
ZD802/ZD803/R804/C825
Check aroud component
Replace IC801
NG
Check around component
NG
Replace device
Check /Replace
C817-C819-C820-C821
37
NG
Return check Power
AOCn941Splus
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