Hi! I have a JVC AX-311 amp. Up to this point it worked perfectly, including today morning. I turned it off and when I turned it on again the LEDs wouldn’t come on and music plays only from the aux port. The CD port plays only noise, cassette and Phono are dead silent. Tried to plug in the actual wall socket, not in a splitter, but that, or anything I else I tried didn’t do anything. Can someone please tell me more about what went wrong? Thanks a lot!