I had an interesting "thing" at rehearsal last night. The pedals all sounded a tad weird, and things came to a head when I found that just the analogue delay section of my EHX Tone Tattoo didn't work at all. The straight through clean signal was there, but no delayed signal, and turning the mix right up (so you would normally just get the delayed signal) meant no output.
So I was miffed. Peeved, even. Another £150 down the drain, and I'd just spent out on a new heavy-duty music stand and a lovely new Hercules mic stand.
So I finished rehearsal in a bad mood and didn't play well because I kept wondering what could make just one section of the pedal fail. So at the end of rehearsal a very-narked Screaming Dave grumpily removed the pedal from the board with a view to performing some sort of autopsy on the morrow.
And then grumpy Screaming Dave happened to glance at one of the two wall-warts he uses to power said pedal board. The one with the switchable voltage - and it's set to 12V. My immediate thought is that I've fried something in the Tone Tattoo, but I reassembled it into it's rightful place and fired the rig up again and, lo and behold, it works fine!
I've read a lot on other forums about running pedals at higher voltages, which I'm sure is OK with some, but my cautionary tale is to be careful. Some might not work at all ....
But, my question to you honourable gentlemen is, why would too high a voltage stop it working at all? My first thought was that an op-amp had gone belly-up, and that would seem to fit the symptoms, but why would too high a voltage cause an op-amp to just not work?
Answers on a postcard, please ......