iMac Problem - LCD/GPU?

[dandubi]

Hi,

I am having problems with my iMac but i am unsure if it is the screen or the GPU.

Has anyone else seen this issue? if i move a window to the top left of the screen it sort of looks ok...

I do not have a cable to connect an external monitor to test at the moment.

Many thanks.

 

[dandubi]

Yeah i tried the LCD cable and still the same. If i change the wallpaper it changes the effect of the distortion also..

I'm just not sure if its graphics or the actual LCD at fault.

 

[dandubi]

It's an early 2009 think 2.66 CPU.