chesco9

Hello Guys, I bought a Synergy Sub-10 on eBay and it worked fine (Great Room Shaking BASS) for while, but now it's been going out once in a while. I have it hooked up to a H/K receiver (which is hooked up to my SONY Media Center), and I see the light switch from red to blue when I turn the receiver on, but no sound comes out of the sub. I use the same cable an connect my old AR sub and voala, the AR sub works fine. To get the Synergy sub-10 to work again I disconnect the power for a few hours and when I connect it back up it works fine again for a period of time maybe for a day or two and then it goes out again. It's obvious that it is a problem with the amplifier on the unit, just can't pin point exactly what's making the amp go outa wack. Has anyone had the same problem with this particular amp/sub before? Is it a known issue with this model? Any help will be greatly appreciated. Thanks.