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Why does my monitor screen flickers twice and the backlight turns off?

Hi, I have an Asus VE205N LCD monitor that has the following behavior.

1. I press the on/off buttom.

2. The on/off LED light turns blue (on).

3. The screen turns on showing the ASUS logo.

4. After about 3 seconds, the screen turns off , the backlight turns off.

5.The backlight turns on again for 2 seconds showing my desktop and then turns back off again.

6. The on/off LED turns orange.

I opened it up to see if a capacitor was bad , they all seemed ok but I replaced most of them anyway just to be sure. The problem has remained the same. Could the problem be the inverter? and if so, how can I identify what the inverter looks like so I can replace it? Its my first time repairing a monitor and I am eager to learn more so please give as much advise as you can.

Thank you!

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投稿日: 2016年2月4日

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Hi,

Fault finding by elimination.

1. Have you selected the correct video input type vga, dvi etc?

2 .Have you tried a different video cable? (amber light indicates standby mode -no signal perhaps?)

3. Can you connect the monitor to another PC and see if it works?

4. Try a different video input type on the monitor - you have vga and dvi-d to choose, try the opposite to what you are using if possible

5.Try the monitor OSD (on screen display function where you adjust the settings - colour, brightness etc) - if this works your monitor problems may be tied up with the signal input side of things if the other suggestions don't work.

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Why does my monitor screen flickers twice and the backlight turns off?

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