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Old 20 December 2020, 21:16   #1
amigappc
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Capacitor list for Amiga 500 PSU Model 312503-03

Since I did not found this list on the web, I am publishing it for future reference.
It is 4,5A PSU.
These are original values, as I read them on the board.

Code:
********************
3300uF    10V    105C
3300uF    10V    105C
100uF     450V   85C
0,47uF    50V    105C
10uf      25V    105C
1uF       50V    105C
1000uF    10V    105C
220uF     16v    105C
220uF     16v    105C
470uF     25V    105C
2200uF    16V    105C
*********************
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Old 21 December 2020, 01:22   #2
lesta_smsc
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Thank you for sharing this. I've just realised I have problems with the power connector and a break in the wire of 2 power supplies! Whilst I'm looking at repairing the connector, I may as well replace caps.

Interesting that all bar 1 are 105 degrees.

Thinking of these unless they're available in the UK?

https://www.ebay.co.uk/itm/NEW-high-....m46890.l49292


The other consideration is to replace the internals with another psu altogether e.g. Mean Well and wire it up instead of Amiga PSU if anyone tried this?

Last edited by lesta_smsc; 21 December 2020 at 02:14.
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Old 21 December 2020, 20:45   #3
amigappc
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That is what I planned to do, putting Meanwell PSU in Original Amiga PSU case. Then I was told that Meanwell PSU-s (as PC ATX PSUs) do not regulate voltage by 5V rail, but by 12V rail, which is hardly used in classic Amiga systems (without 3.5" hdds, CDROMS etc).
In that way they do not comply with Commodore PSU standards.

I do not know if that is a thing or not, but I decided to get quality replacement capacitors and recap my Amiga 500 and Amiga 600/1200 PSUs that I have at home.
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Old 21 December 2020, 21:16   #4
torsti76
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Well, at least that's the main sales argument for the icomp PSUs. ;-)
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Old 25 February 2021, 17:29   #5
Laupert
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I have the same power supply, same model number, but different capacitor values. Probably an entirely different psu but with the same model number. It's probably a good idea to check the board before ordering caps
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