My Dell monitor has a problem

[spoony77]

Hi people
I seem to have developed a strip of horizontal intefernce type lines on my monitor, i have taken a video as print screen doesnt capture them at all?
http://www.youtube.com/watch?v=l9305CXmB0Q

Any idea what could be causing this?
Regards

 

[spoony77]

keep the monitor powered on but disconnect video cable to monitor. if you see the same issue during the monitor self test then monitor faulty. However if not the issue is with your PC/software.

I tried this and the monitor still displayed interference
I guess my beloved dell has given up the ghost.