Thread: 721-TS Problems
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Old 02-02-2005, 12:44 AM
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wa2ise wa2ise is offline
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Quote:
Originally Posted by bgadow
2) C4 is a 2-section low voltage cap that I replaced previously. I sometimes leave those types alone but this one was beginning to "puke" out the bottom. In running the set the other day I started to smell something and looked down to see C4A bulging just like the can of soup on the stove in some old bw short I've seen. (Stooges?) Anyway, I shut it down, that cap was an older stock so I swapped it, the newer one did the same thing, got very hot and finally popped.

Looking at that circuit it looks like you'd need caps with very low ESR (effective series resistance). Switching power supplies use low ESR caps, so maybe try salvaging caps from a no longer needed PC power supply. Or use several smaller caps wired in parallel. That would split up the AC current load and each will not get as hot.
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