Electronic Repair

Presumably the component burnt out, and presumably the component was serving some purpose, my guess is that it's a surface mount resister. Isn't bridging over the failed component with a blob of solder potentially going to lead to greater damage, especially as you don't know why the component failed in the first place?

Hi Colin, Chris has a point there. I zoomed in on your picture of the board, what I thought to be unsoldered contacts were all that was left of the original component. I wonder if the missing bit was a capacitor.? Perhaps you could find a circuit diagram on Google?

Looks to me like the master GND (negative) worked loose and as the full charging current also runs through here it got hot and burnt away the circuits print. I would suggest clean up area with a small fine wire brush and then clean area with meths/alcohol/jack daniels. If there is some print left i would insert a small post or use thick copper wire. Solder this is the best you can. If there is no print left then follow the trace in a bit. If it is wide enough drill a very small hole and then follow my suggestion previously about a post.

Thanks for everyone's comments, since I feel uncomfortable messing with something I don't understand
I'll show it to Mitch when I catch up with him at Cashmoor.

Colin.

Colin I have a spare charger if you want to borrow it.

Regards John

joneb wrote: Colin I have a spare charger if you want to borrow it.

Regards John

John - Thanks for your kind offer, I'm now using what was my "spare" charger.
Colin.