Power leads going into A1200?

[AmmoJammo]

I went and checked my spare, dead A500 motherboard.

-12volts is actually in the right place! that's a start... :/

and your ground is connected where +12volts should go...

It appears you've swapped every connection from left to right.

I have no idea if the motherboard will still work after this abuse.

[blakespot]

I should have gone with my orig plan, to find a power cable and wire from it, where there were no questions, it would seem.

So, in your reckoning, is are the four, in-line, vertical power connections, just back from the power jack solder points, as follows top to bottom?

GND
+5v
-12v
+12v

It's what I gather from your comments. Thanks.



bp

[AmmoJammo]

I powered up the board to make 100%, with out a doubt sure, that those voltages were correct, and this is what I measured.

[blakespot]

Thanks for checking the voltages, I will try re-wiring in the morning, hoping things are still functional.


bp

[AmmoJammo]

Do it now!

[blakespot]

Success! Testing so far with A1260 removed.

Is power in from PSU to A1200 floppy power connector still advised for A1260 usage?

Thanks.




bp

[AmmoJammo]

I would.

Although I have no experience with an A1200, or A1260.

The power connector on the A1200 is a long way from the expansion slot. So any high current device on the expansion slot is probably going to suffer from voltage drop...

Adding voltage to the floppy connector can only help with this

[paul1981]

Success! Testing so far with A1260 removed.

Is power in from PSU to A1200 floppy power connector still advised for A1260 usage?

Thanks.




bp

Is that an Acorn A4000 I see? I must get an Acorn... :knuddel:

[blakespot]

Is that an Acorn A4000 I see? I must get an Acorn... :knuddel:

A5000. :-)

http://www.flickr.com/photos/blakespot/sets/72157622961644330/



bp