I've had a PS failure on one of my old Acorn RPCs. I do have a spare but
it's the low powered alternative and it would struggle with the extras I
have on that machine. I can probably repair the original since I have a
good one to get the values of the burnt out resistors etc on, but of
course a standard PC one is so cheap it's not worth bothering. However,
they are the wrong size and shape to fit the case.
But looking at the CPC site I found one that would. Plenty beefy enough
The Acorn PS only supplies at a max:-
+ 5.1v @ 11A
+12v @ 3.6A
-12v @ 0.25A
So the one that would fit is fine - but has in addition a +3.3v and a +5v
Do these extra outputs need some load to allow the thing to switch on?
And just how do you power it up? The Acorn has just a simple mains switch.
The cover says the 'on' lead is the grey one - but doesn't say what it
expects to see.
- posted 12 years ago