NAD 3225PE/what is this part?

[Ray Knoedl]

I have a bad part in an NAD 3225PE, designation E501. It goes between the collector and the emitter of the negative dc regulator out. (there's one on the positive side too). It resembles a ceramic capacitor but has continuity. Since I can't locate a schematic for this puppy, I don't know if it's a varistor, thermistor, perpetual motion machine, or an alchemy device! Does anybody know what this is and where I can get one?
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Ray Knoedl

[Guest]

you can never tell by a number most manufactures buy parts by their internal code i know why. so do you. if it is from collector to emiter i would think it is some sort of snubber that they pacacked and call it that. just a guess