Identifying a bad cap looking OK \ VOGONS

Identifying a bad cap looking OK

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First post, by JustJulião

Posted on 2022-09-06, 10:00

JustJulião Offline

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Rank: Member
Posts: 233
Joined: 2021-09-29, 20:09
Location: Europe

I know how to replace caps but I have no knowledge about it.
I must have a bad cap on my Epox EP-51 MVP3E-M because I need to power it on twice when @100MHz FSB.
It powers on OK at 66MHz.
Problem is, it has been recaped and they all look good. Should I replace "minor" caps that are likely older ? Should I replace "major" ones with better quality ones even if they look good ?

The attachment IMG_20220906_114822.jpg is no longer available

What about this little yellow ones near the ATX connector ?

The attachment IMG_20220906_114939.jpg is no longer available

Reply 1 of 1, by majestyk

Posted on 2022-09-06, 13:02

majestyk Offline

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Rank: Oldbie
Posts: 1547
Joined: 2020-12-04, 09:13

Did you do the recapping yourself?
Those green 1000µF look exactly like the crap-caps Epox used. They either have not been replaced, or someone replaced crap-caps by other crap-caps.
ALL the large ones need to be replaced by quality electrolytics like Rubycon, Nichicon or Panasonic - no exceptions. Otherwise you will continue having issues like the ones you currently have.
The small ones can remain.

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