[rescue] Dead SparcStation 1 power supply

[Alan Perry]

On 4/15/24 11:15 PM, Romain Dolbeau via rescue wrote:
> Le mar. 16 avr. 2024 à 04:17, Dan Moisa via rescue
> <rescue at sunhelp.org>  a écrit :
>> Thanks, I will try the caps. Not going for purist, I gutted a dead sparcstation 1 to put in a 3/80. I'm starting to have a pile of dead sparcstation 1/+/etc power supplies, and I'd rather fix them than throw them.
> For machines without power supply, a solution might be to power them
> with an ATX power supply and an adapter.
> I designed one to use with a 3/80 motherboard from the ATX
> specifications and SS2 service manual (for the pinouts). However it
> didn't help said 3/80 (still under very slow investigation), so I
> suggest a thorough triple-check before trying. It can be found here:
> <https://github.com/rdolbeau/SS1_ATX>  I couldn't find a matching 2x6
> connector for the Sun side, so it's designed for a 2x7 and two pins
> are hanging out on the side...


I have adapted a few different 300W mini-ITX/flex-ATX PSUs to work with 
Sun lunchbox systems as well as an Axil clone that uses the same 
connector but different pin assignments. I prefer modular PSUs so that 
the adaptation is new harnesses between the PSU and the system board.

The connector for the Sun end that I use is DigiKey part number 
WM3705-ND made by Molex. The pins/terminals that I use for that 
connector is DigiKey part number WM9154-ND. The only issue that I 
encountered was not having the correct crimper for the pin.


alan


> Cordially,
>
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