I just finished hooking up a stereo and TV in our guest bedroom. For some odd reason, I had a ground loop. After removing things one at a time (WI game, DVD player, CD Player, & TV), I discovered that the ground loop was coming from the cable TV. If I unhook the cable TV and leave the TV hooked up to the preamp and power amp, the loop goes away. Has anyone experienced this before?
We have this same cable system on our other TVs and there is no problem. I'll get back to it tomorrow, but I welcome any thoughts on it. I have reversed the polarity on every plug that I could. The next thing will be to start lifting grounds which I don't like doing.
Thanks