8 Apr
2018
8 Apr
'18
12:18 a.m.
Howdy,
Working on fixing an old SGI Indigo of mine in prep for VCF East.
The issue is once any sort of IRIX kernel is running, it craps out
WARNING: Power Failure Detected at a high rate.
The SGI Indigo and a few other similar models could push out
that error on the local console and perhaps network inbetween the time
that AC power was lost going into the power supply and the power supply
had discharged enough for system to die. Pretty impressive and strange!
I was amazed when I first noticed it, of course now it has come back to
haunt me.
I have replaced some of the electrolytic caps in the power supply.
But in the spirit of troubleshooting, does anyone have any sort of
schematics or documentation on the power supply, or the midplane?
This is a R4000 Indigo and has the higher output power supply to support
bigger CPU and graphics.
In the meantime I'm working to document what I can about the power
connector and will publish, but I can only get so far without other
insight.
Thanks
--
: Ethan O'Toole
8 Apr
8 Apr
12:58 a.m.
I Have an indigo that has not gotten much use aside from when i first
picked it up. It has the bigger power supply as well and is maxed out on
memory. As a last resort, I could sell you my machine. It boots, I had
rigged a peice of jumper wire to the battery to overcome a flat battery, i
did not want to attempt desoldering the battery on board. I have been
focusing less on the smaller workstations like the indigo and octane and
have been using my onyx and crimson, so I am looking to get rid of the
smaller workstations.
On Sun, Apr 8, 2018 at 12:18 AM, Ethan via cctalk <cctalk at classiccmp.org>
wrote:
Howdy,
Working on fixing an old SGI Indigo of mine in prep for VCF East.
The issue is once any sort of IRIX kernel is running, it craps out
WARNING: Power Failure Detected at a high rate.
The SGI Indigo and a few other similar models could push out that error
on the local console and perhaps network inbetween the time that AC power
was lost going into the power supply and the power supply had discharged
enough for system to die. Pretty impressive and strange! I was amazed when
I first noticed it, of course now it has come back to haunt me.
I have replaced some of the electrolytic caps in the power supply.
But in the spirit of troubleshooting, does anyone have any sort of
schematics or documentation on the power supply, or the midplane?
This is a R4000 Indigo and has the higher output power supply to support
bigger CPU and graphics.
In the meantime I'm working to document what I can about the power
connector and will publish, but I can only get so far without other insight.
Thanks
--
: Ethan O'Toole
9 Apr
9 Apr
11:51 a.m.
I Have an indigo that has not gotten much use aside
from when i first
picked it up. It has the bigger power supply as well and is maxed out on
memory. As a last resort, I could sell you my machine. It boots, I had
rigged a peice of jumper wire to the battery to overcome a flat battery, i
did not want to attempt desoldering the battery on board. I have been
focusing less on the smaller workstations like the indigo and octane and
have been using my onyx and crimson, so I am looking to get rid of the
smaller workstations.
Ah nice re: the deskside SGIs! I remember those fondly.
At this point I'm going to try to figure out how this mechanism works in
the power supply, but if I can't get it rolling soon I will reach out to
you. Rent is high and excess doesn't sell well on eBay any more so being
conservative these days.
My coworker is supposed to bring me one of his Indigo power supplies
today, and I will see if the PSU is at fault or not, and then try to
figure out how the power supply communicates the status.
Oddly enough they were trying to do soft power off on the Indigo and it
never made it into production but some of the hardware is in the power
supplies?
- Ethan
--
: Ethan O'Toole
2296
days inactive
2297
days old
2 comments
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participants (2)
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ethan＠757.org -
lyokoboy0＠gmail.com