@jker That makes a lot of sense, there was a yellow with black stripe on it, I did wonder what it was and now I think I know, I have since binned the ...

@ronalex4203 ok ta for that, I will dig it back out of the junk pile and have another look at it, see what happens, cheers

@ronalex4203 yes but all the connectors and such have all gone in the bin. Not fussed if it doesn't work though, psu boxes are easily come by, in fact...

@will I have measured the V across the power and ground leads and the V from positive to ground on the case and on the board, all give me the same thi...

@will what I have done is cut all but 3 12v side wires out, same with the ground and same with the 5v side plus used the resistor. On the 12v side I h...