I have tolerated a high pitched feedback whistle on my home cinema setup for too long, but now have a puppy! My Philips 28" widescreen is connected to my Philips DVD (LX8000SA) via TV audio output phono leads and a SCART on EXT2. If I cycle between EXT1 (freeview) to EXT2 I get a high pitched scream which is only stopped by pressing a DVD function, or continuing cycling to another source. I presume that sound is being sent back to the tv via the scart which is setting up some sort of loop If I remove the phonos, the feedback is gone BUT... cannot listen to freeview through 5.1 surround. An engineer (within warranty) changed the dvd connection from scart to composite video (?) into a tv scart adapter but the picture was substantially degraded which led me to switch back and tolerate burst ear drums. Is there a cabling config, or cabling components which will prevent this nasty feedback? Please help!!!