Im getting visible electrical interference (showing on my tv). I have the following set up. Two wall sockets, one with a 6 way extension bar plugged in to it. The extension bar has the following plugged in. Sky+ box Xbox 360 Sony Bluray bdp350 Arcam Alpha 9 CD player LG 42" LF75 LCD TV Small 7w lamp The other socket has my Yamaha RX V3900 plugged in. The problem is each morning i can see some interference lines on the tv when watching Sky. It doesnt happen when using xbox or bluray. The interference looks like horizontal lines of pixels, about 6" long randomly appearing,jumping around the screen. There is only ever one line visible at a time. This made me think the problem was with the Sky box, however if i unplug the Sky box altogether it still leaves the line of interference on the tv, however the line of interference stays perfectly still, dead centre on the screen. Switching the power bar off at the wall for a moment (leaving the Yamaha on) then back on gets rid of the interference.. until the next day. It seems it could some sort of build up that needs clearing every day. Would some sort of surge protector or conditioner sort the problem? Which one should i try since prices range from £12 to £200.. I was in Superfi the other week and they recommended one for £40 that was a what-hi-fi 5* winner, dont recall the name but i said id have a look around first.