Probably not 100% related to this subject, but I just made myself feel stupid. I had problems with my powersupply, machine would reboot when going online. Tipical powersupply problem, so I bought a new one. 400W powersupply. Did all the modifications and all my amiga's would work with it. Except the one I bought it for. (PPC) It just didn't boot. This turns out to be a problem with the voltage level. 5V isn't really 5V but 4.7. Ai... So the 400W supply turns out to be crap.
I read somewere that older supplys (ATX) are much better because they are more stable and better voltage levels. So I bought a 2nd hand 230W supply and did the modifications. Quess what, my amiga boots!!, but when the BVision creates a screen,. Reboot!!.. Damn.
This was my own fault though, I used the 5V line from a HD powerline. This line cannot provide the current load the amiga needs. Eventhough this is a 5V red line. Took me a while to realise I needed to use the red wire from the motherboard connection. It now runs like a baby!
Why did I use the red wire from a HD power connector ?, because it was easier to work with (cut/strip)