I have a JVC GR-DVL522U that I've had for five years. I have problems with playback of minidv's with audio breakup or little audio at all on some tapes. Some work better than others or just have a sound breakup every few minutes. I recently took this cam to a Best Buy for cleaning, but it didn't help. It seems to record fine but the playback is what I think is the issue. Is this reparable?