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ACER AL1716W no power

I bought this ACER AL1716W monitor new about two years ago. It was made Aug 2007. But since I bought it off a guy who didn't want it, but only wanted the CPU it came bundled with, ACER has refused to honour its warranty. Tough luck for me.
Anyway, the monitor worked perfectly until about a week back. When I power up my computer CPU, then my monitor.......I realised there was no light on the power button. The monitor had no power at all. I changed power cable, didn't work. Plugged it into another computer, didn't work either.

Since ACER is not helping me out (unless I pay them : 1. Verification without proceeding to repair/service: $50 2. Labour charge for repair/service of system: $80 3. Replacement of faulty parts: to be advised by the service engineer. ), I have no choice but to attempt to fix this myself. And I am soooo glad I found this forum.

I have removed the power (inverter?) board. Capacitors are not bulging, eveything looks fine, to my untrained eyes.

So, based on the symptoms I mentioned, what could be wrong?

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Hello Cornloh, Hi! it seems to me that the switching elements are not working, you need to check the Power transistor for shorts, and replace the IC (switching IC, usually IP3842). the easiest is to use an Oscilloscope to read/find the pulsing signal.

Posted on Apr 26, 2010

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Sg5841 not ip3842

Posted on Jan 14, 2013

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My Acer AL1917WAbd 19" LCD powers off ~2 second after power on.


The monitor this old I will not be surprise if you will find a lot of bad caps inside, see what goes wrong with LCD monitors here:
http://s807.photobucket.com/home/budm/allalbums
http://www.badcaps.net
http://en.wikipedia.org/wiki/Capacitor_plague

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