well i bought an used small stone and it was fine for 3 hours but suddenly it stop working, the guitar signal pass with no problem but there's no phaser effect, what could happened?
the "color" switch had a false since i bought it, do you think is this the problem? damn it was so cool.....

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My Textural Atmosphe-Rig .
So don't piss them off.

as a stone squad member I have to help you but I don't know if I can.
you have to take care about small stones, but the good thing is, in most cases you can repair them yourself (try that on a boss)
I was on tour and suddenly my stone wouldn't work either. no sound when on. I t turned out to be a broken welding inside, which was very easy to fix. so take a screwdriver, be careful and look for a loose connection. fix that switch thing too. good luck.

ps: I always have my small stone in the loop of a boss ls2, so I dont even step on it (and no volume drop either, even boost for solos). that's how much i love it!