Since I've read that usually it's capacitors that go bad in older amps, I've been contemplating replacing them in my mid-80's Yamahas as preventative maintenance.
As of now, there are no signs of impending failure that I can see. No leakage, no swelling, no discoloration, etc. So, this leads to a few questions.
1. Is this just a make-work project with no real value? I know this is somewhat a matter of opinion, but I am satisfied with the sound of the amps for my HT system.
2. The caps in the amps are Nichicon. The only website where I have found comparable caps (based on voltage and capacitance) listed is on Cornell-Dublier website. Are these "worthy" replacements for the Nichicon's?
3. Would there be any benefit to installing higher capacity caps provided there is room for them and I use wv ratings equal or higher than the OEM's?
I would need the following caps to do the power supplies (this is for the "big" caps in all three amps)
2) 22,000 uf @ 69 wv
4) 47,000 uf @ 45 wv
4) 33,000 uf @ 56 wv
4. There are a number of smaller electrolytic caps throughout the amps. Can I assume that replacement of these would also be in order should I choose to actually do this?
5. Any words of wisdom, or caveats to be mindful of?
Thanks,
Todd
As of now, there are no signs of impending failure that I can see. No leakage, no swelling, no discoloration, etc. So, this leads to a few questions.
1. Is this just a make-work project with no real value? I know this is somewhat a matter of opinion, but I am satisfied with the sound of the amps for my HT system.
2. The caps in the amps are Nichicon. The only website where I have found comparable caps (based on voltage and capacitance) listed is on Cornell-Dublier website. Are these "worthy" replacements for the Nichicon's?
3. Would there be any benefit to installing higher capacity caps provided there is room for them and I use wv ratings equal or higher than the OEM's?
I would need the following caps to do the power supplies (this is for the "big" caps in all three amps)
2) 22,000 uf @ 69 wv
4) 47,000 uf @ 45 wv
4) 33,000 uf @ 56 wv
4. There are a number of smaller electrolytic caps throughout the amps. Can I assume that replacement of these would also be in order should I choose to actually do this?
5. Any words of wisdom, or caveats to be mindful of?
Thanks,
Todd
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