Clif Holland wrote:
"Chuck Harris" wrote in message


That said, I have lost electrolytics when I have tried the trick of using
a variac to "reform" the whole power supply before applying full mains
voltage. I am quite sure that most of them would have reformed correctly
if I hadn't skimped on the process.

-Chuck

If I'm going to go to all the trouble to remove a cap I'm going to replace
it not play patty cake with it and take chances


Why would you remove the cap to reform it?

On tube circuits, you can do the job in place, just don't fire
up the filaments.

The important point to reforming is that you don't supply buckets of
current to the subject capacitor. If you do, the capacitor will create
little localized hot-spots where the oxide is too thin.

-Chuck