Screen only shows a picture for about 3 seconds then blank black screen, power switch on and not flashing. If i turn screen off then back on again shows picture for 3 seconds and again changes to a blank black screen. Have tried another power source and another computer with the same results.
There is probably a bad capacitor within the monitor that will not allow the picture to "hold" in the on configuration. This will need to be replaced. You can send it back to Phillips, or 17" monitors are pretty cheap these days. I would suggest a Samsung or BenQ. They both carry 3yr warranties.
Replace the CCFL lamps located in the LCD panel.Bad lamps may still light up, but draw excessive current, causing unit to shut down.
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screen goes blank but power switch is till on, if I switch it off and back on it clears for about 5 seconds then goes blank again
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