Question about Acer AL1912B 19" LCD Monitor

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Cant turn on my Acer AL1912B

Lately the screen have started to turn black at windows startup, and i had to turn it off and on again then it would work for a second or two then go black again. I had to do this multiple times, and after i while it would work as normal. (the power indicator light remained green all the time ) However, when i woke up today the monitor no longer respond when i turn it on, no lights, no short flash, absolutely nothing. The power indicator light remains off. Is this the end of my monitor?
Sorry for poor explenation and writing but english is not my native language.

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  • yabbit Apr 13, 2008

    no green power indicator and screen remains black despite multiple attempts to restart. Only had monitor for two months.

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This reply has only historical significance since both are many months old.
Without making a few measurements no exact diagnosis is possible but based on your descriptions, the power supply has to have failed. Kris' problem happened more gradually so whichever part that was marginal allowed a few starts before failing completely Yabbit's failure was more immediate and this one would have been easier to find in a repair.
Switched mode power supplies can be as reliable (and are more efficient) as linear supplies that are much simpler.  But poor component quality can damn a supply to early failure much more certainly than in the linear supply. It could be years before the industry realizes that it can't cheat on quality and still maintain a positive reputation.

Posted on Dec 15, 2008

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