My 90 XJ which I just had body work done to returned with the radio cutting out. It seems as though it occurs when you increase the volume. The display stays lit but the sound stops. I hear an audible click in the right side of the dash when this occurs. I have tried running another ground from body to stereo chassis, replaced the radio with another Pioneer and checked power to the radio when it occurs= good. The original power antennae was inop so it was replaced with a non power mast. Could the lack of power ant. connection be an issue to cause this?

Thanks