My Pansat 3500 has a slight problem. It'll sometimes get to where you can't switch to radio by hitting the radio/tv button on the remote. The channels are still in the memory for both tv and radio, the swap from one to the other just doesn't happen. Hitting the radio/tv button does nothing. I don't listen to a lot of radio, so it's ok most of the time, but is sort of annoying. Resetting to factory setting, and then reloading a saved channel bin fixes the problem most of the time. However, it's weird that this happens, and I'm wondering if it's something that happens to you all too, and/or if there's a more permanant fix?