A500 disk drive stopped!

[mrknight]

The pinout of the PSU can be found here:
http://www.hardwarebook.info/Amiga_500/600/1200_Power_Supply

And for a photo:
http://www.ianstedman.co.uk/Amiga/amiga_hacks/Amiga_Power_supplies/body_amiga_power_supplies.html

When using a multimeter, hold the common ground probe of the meter (usually black) to pin 2 - common ground. Then use the other lead (usually red) and hold on the voltage pins (1, 3 and 5) one at a time. You need both probes to touch one pin each to get a reading. Sorry for sounding too informative but I do not know how much electric/electronic skills you have.

Maybe that you can borrow a multimeter from can help you to check? Ask for help but stay with that person during the test and see what he/she does. And ask questions. Learn. And then get your own multimeter. For just checking basic voltages you do not need an advanced one. I paid ~AU$20 (~GBP14) for the one I have. And it's a decent one to to basic stuff.

Good luck!

[mrknight]

I watched a great video recently by one of the head engineers from Commodore and he explained why that occurs - something to do with differing ground levels.

Sorry for going a bit off topic here, but is this video available online? And if so, do you have a link? It sounds very interesting and I'd like to learn more:)

[mrknight]

So turned dial to 200V~

Sounds to me that you have set the multimeter to measure AC. You need to do the reading in DC. See if you have a range setting for DC or VDC.

Maybe post a photo of the multimeter with the probes attached?

[mrknight]

I can't remember but I think it was this one:-
 
https://www.youtube.com/watch?v=DXRvCnmLj7A
 
Look at his channel after you've watched that, he's got several more videos including another 2 or 3 related to that retro repair event.

Thank you! I have added the video to my 'watch later' section.

Laughy, when using a multimeter you should set the measuring range closer to the level you want to measure to increase accuracy. You are measuring a 12V level using a range of 200V. You can easily set your multimeter to 20V.