Accidentally used AC power instead of DC

[AntKnee]

I have a couple of pedals, a Jekyl and Hyde and a Keeley Time Machine, that someone (not me, I swear) hooked AC power to, instead of DC. Are they repairable? Does anyone know what to look for, besides melted parts?

[pryde]

Hmm besides polarity diodes any number of caps could be toasted depending on how much AC was put on them

[lincolnic]

There may also be a resistor in series with power that would act like a fuse and sacrifice itself to save the other components...if your pedals have something like that in their circuits, you'll know, because it'll be completely fried.