Question about Acer AL1912 19" LCD Monitor

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Acer AL1912 19" LCD Monitor goes black after power up

I change the 10V 1000uf capacitors but steel my monitor doesnt work.I mean when I first time power up screen came the few second later go off
and eve use the power button is not bring back.You have to takeoff the power cord again.Is anybody have a idea what can be?

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With the screen connected to the pc (which is running and putting out a signal) hold a bright light to the front of the lcd - a led flashlight works well. Do you see an image? If so then circuitry driving the inverter backlights may be at fault. I had this happen with a Dell Flat Screen, and found one of a pair of transistors which drives the backlight had developed a short.

Posted on Nov 22, 2009

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