Red gone Black

[toosh]

Never had this before but that last two weeks i've developed a problem.When i clone my monitor to my tv the picture on the tv is perfect but the colour on my monitor changes.Anything red goes black,and yellow goes green and there's a light Blue tint to everything.It doesn't matter what i adjust on the Nvidia control panel nothing changes,even reset to defaults does nothing.When i unplug the s-video lead and untick Tv my monitor refreshes back to normal.The card is a BFG gtx 260 Maxcore 55.The card works flawlessly and this problem only happens when using dual monitor.The monitor is a Samsung Syncmaster which also works perfectly other than this problem.Any ideas ?

 

[Wraith]

Used to have a very similar issue with my old HD 6790 when ever I used the HDMI to the TV and the Monitor at the same time (Dual screen), my monitors reds used to turn a funny green colour and flicker :-/ Switched out the HDMI lead for a higher quality one and all was sorted, still had a very slight flicker though. I came to the conclusion it was a signal drain from the TV.