I have a JVM 215C. Having a problem with volume. Amp was running and playing fine. Put on standby for a few minutes, came back, switched back to "on" and then no sound. Switch master to on, and it plays. Master off, then no sound again. Probably something dumb, but I don't appear to have touched anything else that would have this effect. Still plays fine under Master switch. I've had the amp for about 11 months. Any recommendations?
As it is still under warranty we would recommend that you take it back to the dealer it was purchased through so they can check it over for you.