|
|
Post by austin86 on Oct 27, 2023 10:08:20 GMT -5
I been resting a old data center server form the mid 90s. When I bought the system much of the hardware was damaged in shipping so I gutted it and used the massive case for a handful of builds here and there.
However now I'm working on resting it. Much of the hardware is ether one off or supper obscure stuff even when new. The PSUs are no exception.
I need to recap the PSU and the redundant cage/box thingy that lets the PSU's work together. Getting a new PSU is a no go.
Can I just buy any good caps that are of the same voltage UF rating ? or are PSU's sensitive to ESR and other things? I'm thinking I would want high temp ratted caps but other wise IDK.
|
|
|
|
Post by Vinster on Oct 27, 2023 22:15:16 GMT -5
I been resting a old data center server form the mid 90s. When I bought the system much of the hardware was damaged in shipping so I gutted it and used the massive case for a handful of builds here and there.
However now I'm working on resting it. Much of the hardware is ether one off or supper obscure stuff even when new. The PSUs are no exception.
I need to recap the PSU and the redundant cage/box thingy that lets the PSU's work together. Getting a new PSU is a no go.
Can I just buy any good caps that are of the same voltage UF rating ? or are PSU's sensitive to ESR and other things? I'm thinking I would want high temp ratted caps but other wise IDK.
I'd just do a gander of what caps are in there generally... but if it's old and you're getting new caps. Likely the manufacturing of the new will be better than original when made.
Vin
|
|
|
|
Post by austin86 on Oct 30, 2023 8:24:55 GMT -5
I did that but sometimes its hard to find specks on 25 year old caps outside what is on the label. I replaced the worst caps with what I had on hand and it seems to be working. Some of the rating and sizes of odd balls too, One cap is 16.6v 1665uf and its 6mm with a 2.5mm lead spacing. I hope that cap never goes bad.
|
|
|
|
Post by Vinster on Oct 30, 2023 20:28:34 GMT -5
I did that but sometimes its hard to find specks on 25 year old caps outside what is on the label. I replaced the worst caps with what I had on hand and it seems to be working. Some of the rating and sizes of odd balls too, One cap is 16.6v 1665uf and its 6mm with a 2.5mm lead spacing. I hope that cap never goes bad. some ppl will cringe to this one... sometimes all you can do is not cut the leads and leave the cap standing on "stilts", then use a dab of hot clue to attach it to something next to it.
won't look pretty, but should work.
Vin
|
|
|
|
Post by austin86 on Oct 31, 2023 8:12:43 GMT -5
I did that but sometimes its hard to find specks on 25 year old caps outside what is on the label. I replaced the worst caps with what I had on hand and it seems to be working. Some of the rating and sizes of odd balls too, One cap is 16.6v 1665uf and its 6mm with a 2.5mm lead spacing. I hope that cap never goes bad. some ppl will cringe to this one... sometimes all you can do is not cut the leads and leave the cap standing on "stilts", then use a dab of hot clue to attach it to something next to it.
won't look pretty, but should work.
Vin
I done that before, it does not bother me but the PSU is so tight packed that I don't have much room to work with. I also put heat shrink on the leads to prevent shorting.
|
|
|
|
Post by eidairman1 on Oct 31, 2023 19:29:04 GMT -5
I did that but sometimes its hard to find specks on 25 year old caps outside what is on the label. I replaced the worst caps with what I had on hand and it seems to be working. Some of the rating and sizes of odd balls too, One cap is 16.6v 1665uf and its 6mm with a 2.5mm lead spacing. I hope that cap never goes bad. some ppl will cringe to this one... sometimes all you can do is not cut the leads and leave the cap standing on "stilts", then use a dab of hot clue to attach it to something next to it.
won't look pretty, but should work.
Vin
just insulate the legs to prevent shorts
austin86 Avatar
Oct 27, 2023 10:08:20 GMT -5 austin86 said:
I been resting a old data center server form the mid 90s. When I bought the system much of the hardware was damaged in shipping so I gutted it and used the massive case for a handful of builds here and there.
However now I'm working on resting it. Much of the hardware is ether one off or supper obscure stuff even when new. The PSUs are no exception.
I need to recap the PSU and the redundant cage/box thingy that lets the PSU's work together. Getting a new PSU is a no go.
Can I just buy any good caps that are of the same voltage UF rating ? or are PSU's sensitive to ESR and other things? I'm thinking I would want high temp ratted caps but other wise IDK.
you need caps that are the same farad and voltage rating to be on the safe side
|
|
|
|
Post by austin86 on Nov 1, 2023 8:32:55 GMT -5
you need caps that are the same farad and voltage rating to be on the safe side That was my thought but some of the farads and volts are odd on this PSU like the 1665uf. Most of the caps are not leaking and barley bulging and okish brand so I only replaced what was bad or leaky. The PSU is working now but I"ll need to keep an eye out for replacement caps.
|
|
|
|
Post by eidairman1 on Nov 2, 2023 21:24:54 GMT -5
you need caps that are the same farad and voltage rating to be on the safe side That was my thought but some of the farads and volts are odd on this PSU like the 1665uf. Most of the caps are not leaking and barley bulging and okish brand so I only replaced what was bad or leaky. The PSU is working now but I"ll need to keep an eye out for replacement caps.
Thats a good list for who to go with and who to avoid www.tomshardware.com/reviews/power-supplies-101,4193-5.html Only thing is to use 1s that are close in value |
|
