[djthebest]

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.

 

[lcaillo]

Could be bad solder connections, leaky output or driver devices, dirty controls, or any of dozens of other issues. It could range from minor to not worth repairing. I would get it to a repair center that specializes in audio. Check the NESDA site below for members in your area. Even though it list TV shops, some of them do audio more than TV. If they don't, they may be able to make a good recommendation.