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RE: Unexpected noise due to Blu-Tacked electrolytic caps.

Posted by Stereojim (A) on May 1, 2018 at 08:14:11

In Reply to: Unexpected noise due to Blu-Tacked electrolytic caps. posted by Duster on April 30, 2018 at 14:35:01:

My first thought was similar to 13doW's, that moving the caps might have put a strain on one of the solder joints of those caps. If any of them look suspect, I would reflow the solder.
I can't think of any reason why Blu-Tack would cause a buzz, presuming the buzzing is electrical and not mechanical. If you disturbed any electrical connections, sometimes a poor connection can cause a low level buzz. You could check by jiggling any connectors to see if that has any effect.
I presume you didn't place any Blu-Tack on top of any heat sensative components, which might cause stress from overheating.
Or, it is possible that the blu-tack itself did cause the problem.
At any rate, I would be hesitant to use any more permanent way of securing those caps until you know for sure that doing so would not cause the buzz to return.
Interesting issue, Duster. Let us know how this all plays out.

Jim

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