This documents my recent Fuel ATX power supply conversion. I had a chance to get a Fuel with a bad PSU, and so I needed to power up my new Fuel! These are the things I researched, parts that I got, and the procedure I took for a successful installation of a new ATX PSU for my Fuel. The swapping of the wires in the 24pin harness was the most difficult part, but over all it's much easier than having to try and fix one of the older and completely custom SGI power supplies.
Directions:
ATX Fuel Manual:
ATX Pinout Image:
Purchased Equipment:
StarTech.com EPS 8 Pin Power Extension Cable
StarTech.com 8in 24 Pin ATX 2.01 Power Extension Cable
Rosewill Quark Series 1200 Watt
Directions:
- remove bad PSU, set aside
- take 24 Pin ATX 2.01 Power Extension Cable and re-pin according to Wiki Page on PreterHuman (see images below on re-pinning)
- take 8 Pin Power Extension Cable and re-pin according to Wiki Page on PreterHuman
- read the wonderful Manual from Kuba Tyszko to get a feel of how you will test in stages
- connect a 9pin serial to L1 port on MB and attach to terminal
- connect 24 pin and new PSU, enable power and check L1
- connect 8 pin and enable power and check L1 voltages
- disable env monitoring
-- env off
- power on fuel
-- pwr u
- check L1 terminal for proper voltages and thermals
- power down system if there are issues
-- pwr d
-- If things are good, attach drives and power cables for drives and power up fuel.
- Having a terminal on Serial 01 port also helps to see long power-up sequence (flashing white light)
- When light goes solid Fuel should be booting
- Mount new PSU in Fuel with screws and do wire routing
- Close up case and enjoy your fuel
- Continue to monitor the thermals via L1 cable (recal env monitors are OFF)
-- System could overheat and not automatically shutdown
Photos:
Equipment from Amazon
Take 2 staples, straighten out. Insert on each side of the male pin. push down snuggly, pin should pull out easily.
If it does not pull out the staples are not aligned, pull them out and re-insert.
Trust me, you will do this so many times you become an expert at feeling when it's correct and they come out faster.
At first it's difficult to get it right. Keep trying.
Examine Voltages via L1 termainl using env command. Verify all 3/5/12 look good
Testing new PSU, these are the power extenders which are re-wired. The rest of the PSU is not changed.
Success! Fuel posted and went into Console so I could get a HINV.
New PSU mounted and screwd in
Cables guided in and ducting put back
Full boot into IRIX w/ new PSU
Always watch envs and monitor therms.
You can see there FAN 5 - the PSU fan - the Fuel knows nothing about this now and this is why we must disable env monitoring.
Directions:
ATX Fuel Manual:
ATX Pinout Image:
Purchased Equipment:
StarTech.com EPS 8 Pin Power Extension Cable
StarTech.com 8in 24 Pin ATX 2.01 Power Extension Cable
Rosewill Quark Series 1200 Watt
Directions:
- remove bad PSU, set aside
- take 24 Pin ATX 2.01 Power Extension Cable and re-pin according to Wiki Page on PreterHuman (see images below on re-pinning)
- take 8 Pin Power Extension Cable and re-pin according to Wiki Page on PreterHuman
- read the wonderful Manual from Kuba Tyszko to get a feel of how you will test in stages
- connect a 9pin serial to L1 port on MB and attach to terminal
- connect 24 pin and new PSU, enable power and check L1
- connect 8 pin and enable power and check L1 voltages
- disable env monitoring
-- env off
- power on fuel
-- pwr u
- check L1 terminal for proper voltages and thermals
- power down system if there are issues
-- pwr d
-- If things are good, attach drives and power cables for drives and power up fuel.
- Having a terminal on Serial 01 port also helps to see long power-up sequence (flashing white light)
- When light goes solid Fuel should be booting
- Mount new PSU in Fuel with screws and do wire routing
- Close up case and enjoy your fuel
- Continue to monitor the thermals via L1 cable (recal env monitors are OFF)
-- System could overheat and not automatically shutdown
Photos:
Equipment from Amazon
Take 2 staples, straighten out. Insert on each side of the male pin. push down snuggly, pin should pull out easily.
If it does not pull out the staples are not aligned, pull them out and re-insert.
Trust me, you will do this so many times you become an expert at feeling when it's correct and they come out faster.
At first it's difficult to get it right. Keep trying.
Examine Voltages via L1 termainl using env command. Verify all 3/5/12 look good
Testing new PSU, these are the power extenders which are re-wired. The rest of the PSU is not changed.
Success! Fuel posted and went into Console so I could get a HINV.
New PSU mounted and screwd in
Cables guided in and ducting put back
Full boot into IRIX w/ new PSU
Always watch envs and monitor therms.
You can see there FAN 5 - the PSU fan - the Fuel knows nothing about this now and this is why we must disable env monitoring.
Last edited:
