Whatever your problem is, a new digital cable probably won't fix anything. I could be wrong, but I wouldn't get my hopes up. Before you spend any money, you may want to do some experimenting first. Any 75hom coax you have is essentially a digital IC. Most people have some laying around, so if you do, try it. Also, just try regular IC's. Technically, its a different cable and is not usually recommended for digital IC's, but they will work and won't damage anything. The idea is to see how much of an effect they have on SQ. If the differences are very small regardless of cable, you probably need to look elsewhere. If they do make a larger difference, even if it sounds worse, that may indicate a fix is possible. You'll just have to find the right one.
