How to: Re-purpose a later Saturn power supply for a launch machine

So I had a HST-3200 Japanese launch unit sent to me as the owner wasn't entirely sure if it worked properly. Lo and behold, the supply was dead. This supply was 230V, so it must have been supplied from somewhere that I'm not really sure about. Anyway, I had a spare PSU laying around from a HST-3210 that I sold recently and wondered if I could swap over a few connectors to re-purpose, and revive this HST-3200 launch machine.

I took a few pictures of the steps and I'll add a bit of commentary as I post them. Hopefully someone can make use of this, if it hasn't been posted before!

Side by side power supplies. Later on the left, earlier on the right.




Items required were removed from the dead power supply.



I then took the black power plug, clipped the plastic pins on the bottom and then filed down the excess for a flat surface.



Once this was ready, I removed the grey plug from the new PSU and installed the black one.



After removing the connector that the motherboard pins would usually slot into, I took an image to show that the pins of the earlier connector are thicker in comparison when sat in the board.



To remedy this, I removed excess solder from the solder pads on the underside of the board, and used an exacto knife to widen the holes. In the image, only the first hole (9V) has been prepared.



Once you've done this to all five holes, insert the connection (make sure you get it the right way around!) and solder it in place.



You're now pretty much done. I trimmed the excess board on this power supply as I didn't think it would fit without it, but I doubt this is necessary. It should slot into the board holding mechanism in the top half of the Saturn lid no issue, although I'd recommend hot gluing (or similar) it in if you wish to fully secure it.



This Saturn was sent to me without the main 5 case screws so I'm holding it together in this shot, but you can see that it sits flush, as you would expect.



Finally I got a JP power cable and plugged the machine into my step down. Hey presto, one repaired unit.



Hope this helps people, I just tried it to see if it could be done and indeed it can! Cheers.