Hello, I picked up a nice D8443 today and it sounds really nice. Problem is that the cassette will FF, rewind and play at normal speeds while the radio mode is selected but when I select cassette everything slows way down, then to a complete stop. This happens with or without a cassette inserted. It initially plays via cassette but not for long. It seems like a partial loss of power as the lights on the radio also dim a bit. Is this a problem anyone else has encountered? Any ideas?