Amiga 600 Power Supply

[nscaleworld]

Yeah I forgot to say I had no luck when using the Shield GND, had to put the NEG probe on 0V GND instead.
 
Retested and got the following results:-
 
13.80v
-14.25v
5.29v
 
Unfortunately, I don't have a spare PS to check

The 5 volts is fine.  The 12 volt lines are too high, especially the -12 line.  I have an Amiga 600 power supply that I could send to you.  An Amiga 500 psu would be better, because they are higher quality and put out more wattage.

[nscaleworld]

Please, don't spread that myth.
 
Old, heavy A500 PSU: 2.5A@5V - avoid if possible
Newer, light weight A500 PSU: 4.5A@5V
Light weight A500/A600 PSU: 3.0A@5V (the same as the A600/A1200 PSU)

Not a myth.  Why do you think Amiga 1200 owners buy Amiga 500 power supplies?

[nscaleworld]

Now you see why I hate the "surface mount" Amiga models.  Nothing but problems with the pieces of crap.  This includes the Amiga 1200 and 4000 models.