[Trippynet]

Converting an ATX supply will be extremely difficult, if not impossible. As Jan-jaap says, they simply don't kick out enough current on the correct voltage lines to properly replace the Indigo2's supply. I'd love if someone could find a modern PSU that could be re-pinned to work, but I doubt it.

Repairing Indigo2 PSUs can also be very difficult. There are some guides for replacing caps that fix things, but you have to know what you are doing.

Personally, I have one that I sent to a PSU specialist repair company in the UK. Cost me over £100, and despite them re-capping the entire PSU, it still had issues when I got it back (died after about 30 minutes of time). Following a further repair from them, it now does nearer 90 minutes before my system abruptly dies, but that's still not perfect. I sent it back again last week and am expecting it back soon. Will this have fixed it for sure? Who knows!

I should add that the firm that "repaired" it gave it a 1 year warranty, so the subsequent trips back have only cost me about £8 postage each...

Of course another option is to buy a replacement and working Indigo2 PSU. That might be the best bet for now, but don't chuck the faulty one...