OK - back to the job at hand now.

Working carefully this time.... I resoldered all the header pins back in and added an earth lead as per the .NL website. Still not working. Everything lights up like a Christmas tree though...

I checked for any shorting spots and cleaned between contact points to make sure there was no shorting.

One observation I did make was that the female connecter seems to be very loose fitting now and barely gets on. I used the 2.54 header pins and they seem much SHORTER that the ones that were already on it. Quite a bit shorter in fact! I haven't got around to the female header plastic holders and their pins, but wanted to test the progress - it should at least perform like the old setup bit - perhaps even correctly... but only all lights on permanently!

Question is - are there different lengths of the actual pins in the 2.54mm headers? I was thinking of buying a new replacement board but want to complete my "pinball apprenticeship" and at least try and get things working. This will likely mean another trip to Altronics though ...

TIA, Rossco