Radio and sound system

We are on the road and the dash radio isn't working. I started driving and noticed it wasn't on. I don't think it quit while I was driving, I just didn't notice it until then. It worked last time I started the coach. I put a meter on the positive wire and it has power and my ground appears good. On another note, possibly unrelated is that my sound system stopped working around the same time. All I get out of my receiver is bass.

Any ideas