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geekhack Community => Keyboards => Topic started by: supamesican on Wed, 31 October 2018, 09:30:08
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Got a model m2 and it worked perfectly for a little while, now the caps I think are starting to go out. It's doing the tell tale light thing sometimes. I ordered the correct replacement capacitors for it, not ceramic sadly since I couldn't find those in small quantities for an ok price. So my question is will I have to so this again in a other 20 years or should modern capacitors last longer? Or is it something else that kills the caps?
Thanks!
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Check the data sheets for the capacitors. If they are a good brand and series they should last much longer than IBM's
But still, since they are cans of corrosive material, they may leak or dry out. 20, 30, maybe 40 years, but still.
If you can't find suitable poly caps or ceramics, I'd say use a tantalum, but only get it from trusted manufacturers, and get a higher voltage rating than the originals. The last thing you'd want is a tiny fire in your M2.
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Most manufacturers of electrolytic caps will tell you that ~15 years is the maximum life to be expected because of deterioration of the sealing material used in the case. But temperature (https://www.eetimes.com/author.asp?section_id=183&doc_id=1279791) is by far the most significant factor in limiting the useful life of an aluminum electrolytic.
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hmm, how long do the ceramics last? it may be worth it to get them instead if its longer...