HR 24 Pixelation Issue

Hi There, I have an HR24 HD receiver/dvr hooked up to a Samsung A630 46inch LCD TV.  I run video direct from the box to the television. If I run an HD cable from the box to the tv, I have a weird pink pixelation. The picture doesn't freeze, but it almost seems like there are colors the tv can't decide how to display, so it shows them as pink. It happens mostly on skin tones, and it's not big pink blocks, more like pink where another color should be. Not sure how else to describe it. If I switch and run a component video from the box to the tv, playing the same resolutions, the pixelation is gone. I have tried multiple HD cables that I know work for other pieces (PS3/blu ray player,etc) and the problem still persists. I have no trees in my yard and a perfectly clear view, and have strong signals as well. Is this a common problem with the box, or is there a setting I can use to get rid of this? Any help is appreciated. Thank you!