Anyone have any experience with a pedal suddenly hissing constantly that never did before? My DOD Meatbox reissue has been sitting inside my pedal case for a few months and it's never had any issues until now. It was always dead quiet and then today I plugged it in and it has a constant hiss when turned on, while playing or not. I tried using a battery only instead of a one-spot and that didn't help; tried different cables; different bass; looked inside and solder points seem good. I can't figure out what has happened! This really bums me out because they stopped making them too. Any ideas as to what can be wrong or fixed?