I turn the monitor on and it tries to come on but simply flashes to the windows login screen for a split second then turns off again right away. It repeats this over and over every 2 or 3 seconds. When it turns off you can see its trying to display the "no signal" detected but the screen goes black before you can actually read it. This just started happening, its not my computer or video card they all work fine. I suspect the power supply board or the little board where the video connector plugs in is faulty?
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I took off the power board and replaced 3 caps that had bulging tops and now it all works fine.
I removed the power board and replaced 3 suspicious looking electrolytic caps with bulging tops and now it works perfect. :)
2 caps were 820 uF 25V which I used 1000 uF 25V instead.
The other was a 470 uF 25V which I had a direct replcement.
see comments above
Same here. Slight whistle from the PSU as well. Showed a reduced brightness display and then shut off.
Problem solved by changing 3 capacitors (also bulging visually).
The ESR of the faulty caps: about 5 ohms.
Seems to be a common problem with cheap Chinese power supplies.
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