I just purchased with store only warranty at a second hand shop nearby a Magnavox MDV2100 and after hooking it up to our Dynex TV, when we play a movie we get this horrible fuzzy sound out of the right hand built in TV speaker. It comes and goes, but is very annoying to myself and my daughter. I have tried hooking it up to a different port on the TV (we have 2 Aux. ports) and different DVD's, but nothing is working. How can I get this to stop? If I can't fix it, I will be taking it back tomorrow.

Depends on what you paid, You could have the audio out of cable or sat box into an amp and not use internal speakers. The sound could be the internal audio amp or speaker depending on That sound.