SGI Fuel P/S ::WAS:::::::Re: For you SGI fans...

[pdaguytom .]

The Fuel PS can be swapped for its PC counter part.  Wonder over to
Nekochan.net and search for Fuel Power supply, there is a lot of info on
this.  The p1 connector has to be resorted and the replacement PS has to
have the fan monitoring and  that signal has to be adjusted to what L1
expects.  The motherboard has several environment monitoring ICs that, on
the early revisions, go bad and keeps the computer from starting.  These
ICs are/were available for the brave hearted to attempt the repair.  The
later motherboards apparently don't suffer from the enviro monitoring
failures as often.  Nekochan is a great resource, it was invaluable for me
when I was building my Fuel.

Tom

On Friday, January 15, 2016, Jerry Kemp <other at oryx.us> wrote:

> Thanks for the comments.
>
> All this SGI discussion has me wanting to go out and hunt down a Fuel even
> more.
>
> It sounds like I need to focus on finding one with a rev-4 or better power
> supply.
>
> Its been some time since I have personally done any soldering.
>
> There's got to be some place, for a fee, that knows about and can repair
> SGI power supplies.
>
> Jerry
>
>
> On 01/15/16 03:26 PM, Mazzini Alessandro wrote:
>
>> Sadly yes, there's a known issue with psu in fuels. I have one that went
>> kaboom after 20 minutes and lies waiting for a psu since months (and will
>> lie that way, I guess. I'm looking at it in a sad way near daily...).
>>
>> Long story short, Fuel psu were made by 3 different brands, and each of
>> them
>> had ... longevity issues... in what we could say being revision 1 to 3.
>>
>>> From 4 upward (and if I'm mistaken , at worst was from 3 upward) they
>>> tend
>>>
>> to be resistant.
>>
>> Exploding issues aside, those psu are not standard and have a chip doing
>> some mumbo jumbo inside (all lines are monitored, by example). That chip
>> can
>> .. erase itself... ( in the upper mentioned revisions, for sure ). There
>> are
>> no known dumps of the chip firmware.
>>
>>