Hi Everyone, My Marantz 7200 receiver developed some problems over the weekend and I was wondering if anybody has had similar experience. A severe noise comes through all speakers when switching between the menus on a disc and also during playback. The noise is difficult to describe, but is horrendous and has a "you're gonna damage your speakers" feel to it. Now here's the strange bit....it only does it on Dolby Digital 5.1 When DTS is selected, the sound is perfect. Also, when using Pro-Logic 1 & 2 no sound comes out of the centre speaker - only the fronts and rears. Voice info is fed to to the front left/right instead of the centre. I've tried connecting the dvd player (Sony 725d multi region) to a different digital input on the receiver to no avail. To be honest, I'm unsure if the problem is with the receiver or the dvd player, but I'm guessing the receiver is the problem due to the Pro-Logic issue. The Pro-Logic problem is the same whether I'm using aTV, VCR or Digi-Box as a source. I guess the only real way to confirm which is the culprit is to borrow a DVD player and plug it in to the receiver and see if the problem remains. Have any other Marantz owners out there come across this problem at all? Any suggestions as to what other checks I can do will be greatly appreciated. Many thanks for the help and inputs.