Diagnosing is fairly straightforward, IF you work in a methodical manner rather than in a haphazard way.
You can't even be sure that your jump leads work
Hi all
Well, who would have thunk it, maybe obvious, but not to me - then.
Turned out that my jumper leads are buggered and not working. I tried with neighbors jumper leads and it all works.
Only just seen this while searching for something else..... I'm getting good at this.