Re: Replacement Rifa caps for Astec PSU
That's been my experience with the few PSUs I've repaired so far, the cracking, not the catching fire - I usually inspect and replace those caps before testing the PSU. However, I was struggling to find data sheets for the caps I'd mentioned....
Osmosis
Member
Last Activity: 07-02-2023, 02:00 PM
Joined: 01-16-2017
Location: West Midlands
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Last edited by Osmosis; 02-10-2018, 04:54 AM. -
Re: Replacement Rifa caps for Astec PSU
I suspect in another 30+ years, this P/S will be someone elses problem or probably in landfill should my kids not want "dad's old computer junk". lol...Leave a comment:
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Re: Replacement Rifa caps for Astec PSU
Thanks japlytic,
I'd guessed that the 2200pF may have been a Y-class, and my next step this morning would have been (in fact still is to double check) to inspect the traces to see if it's between neutral and ground. Good to know the 0.68uF can be replaced with a polyester equivalent cap.
I've already replaced the 0.22uF with an X-class equivalent - the pic was taken just after I'd removed two of the questionable caps in order to get the full details.
Final step is...Leave a comment:
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Re: Replacement Rifa caps for Astec PSU
If it's of any help, here's a pic of the PSU:...Leave a comment:
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Replacement Rifa caps for Astec PSU
Hi,
I'm refurbishing an old Astec PSU, model 042 02017504, from an LSI Octopus computer circa 1985. I've sourced replacements for the Rifa X rated caps, but have the following Rifa caps that I'm unsure of the best replacements. Can anyone help, please?
The first has the following markings
2200pf
PME 277 MB 422
40/085/21
GPT
CRD
250v-MP
VDE REG NR 5201.212222
The second has the following markings:
0,68uf +-10%
PHE 280
DB 668
100V=
40/100/56... -
Re: New Members - please post your introductions here
Hi All, I'm Steve from the UK. Found this site whilst checking out the capacitors in the PSU of an old 1980s British built computer.Leave a comment:
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