Have you been using the standard 23W A1200 PSU up to this point? If so, I'm really surprised it managed to run even a Blizzard 1230 as I've never got one to do that without crashing, so wouldn't have expected an 060 board to have at all.

I use something called a Golliath PSU. These were made as after market PSUs for the Amiga and are 250W PC PSUs in an external case with an Amiga power cable. I bought it back in the early 90's after buying my first A1200 and it has been perfect ever since.

You can fairly easily convert a PC PSU to run as an Amiga PSU. Most people cut the existing Amiga Power cable from the under powered A1200 PSU and use that to wire up to one of the 4pin Molex connectors on a modern PSU. You would then need to hardwire the soft reset wires together in the 20/24 pin motherboard connector of the PSU to it powers on as son as the PSUs main power buton is switched, and that is it. Fairly easy to do. Just need to then find an external enclosure to put it in.

AmigaKit.com and amigamaniac.com both make and sell conversion cables to make this whole PC PSU conversion process even easier if you did want to consider it.

Others have also taken an existing A500 PSU apart and fitted a small PC PSU inside, so it looks like you are using a real Amiga PSU, but in fact it could be a 400W PC one. The CA member StuKieth did this recently and he posted some pics on the forum if you have a look.