Not sure if this but I have just had my JTV going quiet and have cut out, this has only just started to happen, last week it cut out just seconds befor the first song of gig, I checked everything then I moved the toggle switch up and down and it came back on, I never keep the battery in as I only use the mags, it's like needs some power to keep it going? should the battery be left in? is that the problem? if not will need to send it back, it's only a few months old.....looks like I'll have to go back to my back & shoulder breaking Gibo for this weeks gig.