Hi Guys, Well im 99% finished installing and cabling all my new gear , Panny PW7D , Yamaha 750 , Kef 5005's, 2 xbox's . PS2 , Gamecube , SOny DVD and SKy+ and ive connected the lot via component utilising 2 x Audio Authority 1154A's to the 2 component in's on the amp. All 4 consoles in 1 box, sky and dvd in the other. I thought it was working perfectly , until a couple of times yesterday the picture briefly dissapeared in the screen whilst watching Sky. Thought it was transmission problems at first but discovered last night what is really happening. And this is weird. 1 in 5 times when somebody turns a light on the house, the AA box briefly senses a signal input on the digital coax in from the DVD player which is actually turned off. The AA box switches to that input due to its auto switching then realises there is nothing there and switches back to Sky !! Now i just cant see how this is happening, I can fix it by disabling the auto detect on the coax audio in from the dvd player on the AA box but.....how on earth is switching a light on in the house giving the box a signal in the first place ?? My wife suddenly think its 'shorting out' and is all going to catch fire. nice. Despite my explanation of what is happening. Any electrical guru's out there have any idea why this is hapening. Id like to understand before i try my solution. Other things i was going to try are using a different coax lead or use optical instead. Just the weirdest thing ive ever seen.