OK i had it for about 3 years, and its a Phillips hts3450. for the past 2 months every time i turned it on it would make a loud scathing noise (like rubbing paper on a microphone) it would do that for about a hour,but after that it would work fine. when i turned it on yesterday it would not make any sound at all. i called the support number and all they told me it was out of warranty.