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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: Completely re-cap the AM/FM front end while you're at it! posted by gusser on July 25, 2017 at 11:54:15:
guesser - in your experience is it likely an alignment would be needed if the caps are changed in the AM/FM sections?
what is the likely failure mode if these caps are bad? is it possible the AM/FM sections could take out the output transformers or create a short?
what is the likelihood the alignment for the AM/FM section isn't wrong with the factory caps that are potentially bad?
would you replace all caps regardless of type or just the paper caps?
in the case of this HK224 here I have found that my FM section is a bit flaky, volume levels of received signal fluctuate. there seems to be minimal frequency drift however... I'll probably change those caps out soon. for now I did the coupling caps from/to the concertina phase splitter and put the receiver in service.
there is always the ongoing battle of "recap everything" vs "recap what is bad". I've found the old timers generally prefer to only fix what is broken... and everyone that is roughly 50 years old and younger tend to lean toward "change everything."
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Follow Ups
- RE: Completely re-cap the AM/FM front end while you're at it! - rage 12:18:31 07/25/17 (4)
- I was being facetious! - gusser 13:43:29 07/25/17 (2)
- RE: I was being facetious! - rage 12:40:42 07/26/17 (1)
- RE: I was being facetious! - used-hifi 13:27:28 08/08/17 (0)
- RE: Completely re-cap the AM/FM front end while you're at it! - Triode_Kingdom 13:11:03 07/25/17 (0)
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