Hey everyone, so I just bought a JC77 and it makes this fuzzy "ssssssssss" noise whenever the amp is on. I've tried turning everything down all the way and it's still there. I know that it's an older amp and everything, but what gives? Could the speaker connections be faulty? What about the speakers themselves? Or do I just have a lemon? I wanted to do a NAD but I feel that I can't until this is sorted...

sorry for the double post, i can't hit the edit button on my phone

anyway, it happens when nothing is plugged in, while strumming, even when pickups are turned off....the noise sounds similar to when the radio isn't on a station...just that staticky noise.