[Amps] Stuck Powerstat

[Jim Kearman]

I got a 10-amp 240-V Superior Powerstat for a good price at a hamfest, but the wheel is jammed and I can't figure out why. I removed the brush and AFAIK there's nothing to prevent the wheel from turning, but it's locked partway around. Can't see what's keeping it from turning. Feels like a mechanical stop is holding it. Thanks for any suggestions.

73,

Jim, KR1S
http://kr1s.kearman.com/