Hi I Have a Pioneer Car CD/Radio in the car. Up until a couple of months ago it played fine. Now when playing CD I only get sound from the Right channel. Swap to Radio every is correct, both left and right channels. When it first started it was only happening on a few times but now its always happens. Since the radio works I expect the amp to be working fine, and have a feeling it a dry joint on the CD unit. Any one any ideas? tar.