Saving a dead variac

Thread Starter

Circuits123

Joined Dec 7, 2012
94
I have a pretty old variac. It blew a fuse so I opened it up and about 1/4 of the winding looks burnt. So I assume there's a short in there. Is there any way to repair this or is it scrap?
 

nsaspook

Joined Aug 27, 2009
13,546
I have a pretty old variac. It blew a fuse so I opened it up and about 1/4 of the winding looks burnt. So I assume there's a short in there. Is there any way to repair this or is it scrap?
Likely overloaded. Pretty easy to rebuild if the wiring is fried just at the pickup surfaces and the coil form is still intact.
 
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