Hey folks appreciate your feedback on this issue, I have a MTD 535 and noticed in the last few months it has been drinking up 9 volt batteries like it's plugged in constantly. But it's not. I unplug it whenever I'm not playing it, and I don't work regularly. Anyone have any experience with this issue? I'm going through new batteries every 3-4 weeks sometimes less. This is not right. I'm about to pull out the input jack and start nosing around for anything that looks out of whack. Thanks for any assistance you may have to offer.