Currently having multiple problems with my receiver and I am trying to figure out if it is dying. First off for the past several months I have been having problems while I am watching something (be it via optical audio for the DVD player or composite cables from the TiVo) the audio will drop and I will have to pause the DVD or change the channel (TiVo) and one time I had to turn it OFF and back on and the audio will 'pop' back in. Lately it has been happening more often. Also about 6 months ago when I bought my first HDTV I was hooking up my receiver (had the receiver for about 4 years) and found that one set of composite inputs did not work (luckily I was able to use the front set of inputs and had enough to hook all my stuff up). The Onkyo Receiver I have came with a 5.1 HT in a Box kit I purchased (speakers/receiver/sub) supports Dolby Digital/ProLogic/DTS and has 4 composite inputs, 2 sets for stereo gear (know for sure 1 set works lol), and 2 optical audio inputs (know for sure both work via Xbox and DVD player lol). Now this morning I sit down to watch a movie and it won't switch to DTS (or dolby digital for that matter). I select optical 1 (dvd player) set the DVD to output DTS hit the 'surround sound' button on my player and it doesn't switch its still on stereo(tried on the remote and directly on the receiver). I checked to make sure my DVD player itself was sending digital and not 2 channel and it is so thats not the problem. Any ideas guys? 100% user error or 50% / 50 % ? I didn't expect $10,000 quality but I would have thought that even a cheaper Onkyo HTIAB would of lasted longer than this. Sadly I do not have an extended warranty as it was a gift. Any ideas/help would be greatly appreciated!