Hi, a quick googol for 'reforming old HT caps' produces, http://www.nmr.mgh.harvard.edu/~reese/electrolytics/ has some interesting ideas and explanation of methods. regards ....AB Words that make questions May not be questions At all --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .