[rescue] Dead SparcStation 1 power supply

[Todd Vernon]

 Probably caps but a lot of power supplies have a sense circuit that won’t
come up if it doesn’t sense a 5V load on it.  Thats a place to start
looking if you have the schematics.  If your not a purest that would be a
pretty easy machine to put a 1u tax supply into.  I did that with one of my
IPX machines and it works great now.

-t


Todd Vernon
Entrepreneur | Investor
Email: todd at toddvernon.com
LinkedIn: toddvernon <https://www.linkedin.com/in/toddvernon/>


On Apr 14, 2024 at 10:12:48 PM, Dan Moisa via rescue <rescue at sunhelp.org>
wrote:

> Hi there,
>
> Any special tips for fixing a dead SparcStation 1 power supply? the 5V
> comes up, but the 12v line does not. I'm opening it up expecting to have to
> replace caps, but if you've seen this before, pls let me know if there's
> anything else likely to have happened.
>
> Thanks,
> Dan.
> _______________________________________________
> rescue list - http://sunhelp.org/mailman/listinfo/rescue_sunhelp.org
>
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