Re: ASUS P5A and P2B-S recapping. Searching old datasheets.



Yes, I also suspect that these are wet capacitors. Although they could also be [URL="https://en.wikipedia.org/wiki/Tantalum_capacitor#Wet_tantalum_capacitors"]wet tantalums[/URL]. However I hope this is not the case as the linked article says they are expensive and unusual for consumer applications. So in that case the markings on the board would just be misleading.



I agree, if I would observe stability problems this I would definitely consider replacing the caps...

Re: ASUS P5A and P2B-S recapping. Searching old datasheets.


Sounds reasonable! But this is where I would need to get the proper datasheets to know which values would be healthy :-).
These are the datasheets I found:
- [URL="http://www.paullinebarger.net/DS/Rubycon/Rubycon%20%5bradial%20thru-hole%5d%20YXG%20series.pdf"]Rubycon YXG[/URL] - but there is only one size in the datasheet. The ones on the boards are either smaller or bigger. So I am not sure how far the values in the datasheet apply.
- [URL="http://www.paullinebarger.net/DS/Chemi-con/UCC%20%5bradial%20thru-hole%5d%20LXZ%20series.pdf"]Chemi-Con...

Re: ASUS P5A and P2B-S recapping. Searching old datasheets.



I took some pictures and attached them sorry for the bad lighting conditions, but I hope everything you'd like to see is visible.

First there is one overview picture of the whole board where I marked the Stone capacitors and then there are four detail pictures, one for each. I hope seeing them from the side is what you wanted to see....

Re: ASUS P5A and P2B-S recapping. Searching old datasheets.

Thanks for all your replies. Is there any chance you haven an estimate how long these caps will still last until they dry out so they need replacement?

My process of thought was that even good brands would dry out at some time so now would be a good time to replace them, as now they at least probably need some self healing. But I'll try turning them on carefully just a few seconds at first to help them a little. Or would this be just useless?

Yes, I am quite happy I got the leftover P5A a few...

Hi,

I'd like to recap some of my old mainboards (they are from 1998) before switching them on again for the first time after many years in storage. All caps still look good from the outside.
There are three mainboards:
- ASUS P5A rev 1.04
- ASUS P2B-S rev 1.03 "Rubycon"
- ASUS P2B-S rev 1.03 "Chemi-Con"

If you are interested in their specs, The Retro Web has pages for the [URL="https://theretroweb.com/motherboards/s/asus-p5a"]P5A[/URL] and the [URL="https://theretroweb.com/motherboards/s/asus-p2b-s"]P2B-S[/URL]....

Re: New Members - please post your introductions here

Hi, I already have some knowledge in soldering and electronics but still I'd like to get some experts knowledge from your guys here for recapping some old mainboards (ASUS P5A and P2B-S) and maybe more.