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Old 09-15-2009, 11:09 AM
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jeyurkon jeyurkon is offline
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Join Date: Oct 2008
Location: Central Michigan
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Mattdavala's story is appropriate for your situation in that he didn't test the electrolytics, or rather only tested them by feeling them. It still doesn't change my opinion of the procedure I used.

But having said that, I still feel that you'd be better off changing all of yours.

My 1-108 chassis Sylvania shares many of the same vintage parts that your 1-387 does. While I didn't change all of the electrolytics, I found many that were bad or questionable. They either had high leakage or a high ESR or both. This was especially true for the horizontal section. I think you can expect the same even though your set is a couple of years younger.

Bringing the set up slowly with a variac may let the electrolytics reform, but without testing them you still don't know the state of their health and they may cause problems and prolong your trouble shooting.

I would at least replace all of the electrolytics that are not vertical can mounted ones. If you keep those, I would add fuses where appropriate to protect the transformer.

John
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