Ground Loop, yes. It's either cable being of different ground differential or it's from having different grounds from components(possibly due to differnt circuits for your gear/video stuff. Anothe cause could be if you're using a different power source for some of your compoents(I.e., PS Audio powerplants and power generators for some, then using straight into the wall for others. I think if you plug all your stuff into one circuit to check(including video display and gear) you should see problem go away. Good luck
Double line when watching dvd's-please help
Hi I have been getting a double black line (which is only visible against a light background)when watching dvd's. I have adjusted the round focus dial on the front of my projector, the sharpness control on both my projector and dvd player, but it doesn't make any difference. What could be causing this? Is there anything else I can adjust or do to correct this? Thanks!!