I have been using my metal muff for about a month now, and its a great pedal, but today i was using it, and my sound just sorta fizzled out. I removed my AC adapter, and it ran fine on the battery, but then when i plugged it back in, nothing happened, the light went off and all hope was lost. Is this a fixable problem or do i have to send it to Electro-Harmonix to fix it? I could just use batteries, but they are costly and only last for a short time. Any help?
the same thing happened to mine. i had to take it back to the shop and claim on the warranty. i think the best thing to do when switching from a battery to a power supply is to turn it off and unplug it and then put the power supply in before putting the cables back, i think its a less risky way.