Question for anyone who can answer it…<\/p>\n
When electrolytic caps eventually fail due to aging, will they ever fail in a shorted state? That is, a state of being conductive?<\/p>\n
This is going back to the Atari 1050 floppy drive I mentioned before. I’ve pulled the mainboard, removed all socketed ICs, and disconnected the electromechanical bits of the board. The short is still there, so I know that the problem is somewhere on the board. As it was working fine the last time I tried it (a number of years ago) I’m guessing that the failure is in a part which degrades with age.<\/p>\n
There are some rather large electrolytic caps on here, including some smoothing ones which are (likely) located right after the LM7805 and LM7812. I figure if these have failed shorted, they could cause the problem that I’m seeing.<\/p>\n
I’ll probably try pulling them tonight or tomorrow and seeing if the short(s) go away. If so, I might just replace all of them. There are only nine, so it shouldn’t be too expensive to try, and I need to place a Mouser order for other stuff already.<\/p>\n
(And no, I can’t find a schematic for it, unfortunately.)<\/p>\n","protected":false},"excerpt":{"rendered":"
Question for anyone who can answer it… When electrolytic caps eventually fail due to aging, will they ever fail in a shorted state? That is, a state of being conductive? This is going back to the Atari 1050 floppy drive I mentioned before. I’ve pulled the mainboard, removed all socketed ICs, and disconnected the electromechanical\u2026<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6,34],"tags":[],"class_list":["post-8701","post","type-post","status-publish","format-standard","hentry","category-electronics","category-moved-from-livejournal"],"_links":{"self":[{"href":"https:\/\/nuxx.net\/blog\/wp-json\/wp\/v2\/posts\/8701","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nuxx.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nuxx.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nuxx.net\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/nuxx.net\/blog\/wp-json\/wp\/v2\/comments?post=8701"}],"version-history":[{"count":1,"href":"https:\/\/nuxx.net\/blog\/wp-json\/wp\/v2\/posts\/8701\/revisions"}],"predecessor-version":[{"id":12929,"href":"https:\/\/nuxx.net\/blog\/wp-json\/wp\/v2\/posts\/8701\/revisions\/12929"}],"wp:attachment":[{"href":"https:\/\/nuxx.net\/blog\/wp-json\/wp\/v2\/media?parent=8701"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nuxx.net\/blog\/wp-json\/wp\/v2\/categories?post=8701"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nuxx.net\/blog\/wp-json\/wp\/v2\/tags?post=8701"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}