I bought a Boss RV-5 on ebay. It arrived today... Plug a cord into the input jack, and the "Check" light goes on. Step on the foot switch (any number of times), and the light does not go off. Plug a cord into the output jack, and it becomes readily apparent that while the signal is indeed going through of the pedal (and coming out in stereo), there is no reverb happening whatsoever. So it says it is always on, but it acts like it is always off. Any thoughts on what can be done about this? I'd rather not mess with it myself, as I ultimately may have to send it back, but if this is fixable for under 20 bucks, it's better than having to pay return shipping and then go buy another pedal. Anyone know a cheap repair shop here in Chicago?