It should still be under warranty. go to the first link in my sig for repair info.

Today I encountered the same problem, I have it for less than a month (bought 3/2). The battery was dead so I connected a ZOOM power supply(9v, 300ma, Negative center) that I have used with many pedals before without a problem, including an EHX Octave Multiplexer and a Little Big Muff Pi. At that point the crying tone started to hum and had no signal although the EHX logo was lit. At bypass still no signal. I disconnected everything, tried a different power supply with the same specs, tried giving it power from a slave cable from my pitchblack tuner still the same. So I bought a new battery to try, opened the battery door and ta-da! The smell of something fried! My guess is that the input capacitor or some other capacitor in the buffer section is fried, probably a defective one. So, built like a tank? It looks to me more like a crab… Hard outside, vulnerable inside.

Wow, EHX could be BANKING $$$$$$$ right now, and this??? There are so many name brand American businesses out there who need the right people to allow them a renaissance period. All the one man Muff operations are profiting from EHX’s dead-wood management.