Amiga 3000T Power Supply

[Kawazu]

When you say that the amiga just dies, does the fan on psu still spin and does it output power and the lights are on or is it completely dead?

[Kawazu]

If i where you i would try to find a modern PSU with all the correct negative rails and just replace the whole inside.
I had to do that with my PSU, did not get a tick signal so i just gutted the whole thing and i now got a 400w psu inside the original psu case and works like a charm

Just remember to messure the power output before and after so you have connected all the wires correctly