Dell monitor switching itself off and on

[sir-les-mp]

My father has a 22" Dell monitor which he got approximatley 3months ago
It is now starting to switch itself on and off for no reason without displaying anythin on the screen.
His Pc is also only about 2 Months old as i had him replace his old machine with a pre-built model from OcUK "Primo Lite" Intel Pentium Dual-Core 2200 2.20GHz SILENT DDR2 System with an 80 Gig hdd
He is using the pc for documents and internet surfing with the occasional video upload from camera to his website.
So he should not be stressing the system out in any way however this is the second 22" monitor that has done this with him.
The only thing i can think of is that he insits on running the monitor @ 1024 x 768
the computer, monitor etc are all plugged into a surge protection adapter.

Can anyone here think of what is happening to these monitors

 

[UOcUK Poopscoop]

Does status LED colour change (assuming it has an LED to do that!) meaning is it going into standby due to no signal etc......or does it quite literally switch off, LED goes out etc.?

 

[spleenharvester]

I seem to remember something about the internal PSU being knackered causing this fault. Push the power cable in as far as it will go and do not move the monitor.