Acer V193W - Page 32

Service Guide Acer V193W
5. No Backlight of panel
Check flow chart for the
Inverter No Backlight
After Power off,check
C804/C811/Q805/Q806
Check ON/OFFsignal
Check voltage of J801-12V？
Open J801 voltage-12V
Return check Power
Check main board
After Power off,check
R802\C806\C809？
Check IC801—11pin=5V？
Check IC801-3pin waveform?
Check aroud C809\Q802
Replace IC801
Check IC801-pin6-8-9-10-PWM?
Check Q805,Q806-Gate/Drain
Check PT801-out waveform
Replace PT801
replaceIC801
Check ZD802/ZD803
R803/R804
Replace device
NG
NG
NG
NG
NG
NG
NG
OK
OK
OK
OK
OK
OK
OK
OK
NG
Check the lamps of panel
&conn
ector,feedback circuit
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