Do you have anything connected to your Zumo? Can you post pictures that clearly show your Zumo and your on/off switch? Can you also measure the battery voltage?
Thanks for the pictures. Since you are having two issues with one Zumo, and a separate issue with another, it seems like something in your process or handling might be the cause. Can you follow the disassembly instructions here under the “Assembling the Zumo Shield and chassis” section for both nonworking Zumo Shields and post pictures that clearly show the soldering?
I will get her to work through that this afternoon. We have managed to rectify the buzzer issue on the current shield - not sure if it was the program she was playing round with or not
I will post some other photos this afternoon
Just as a note - last time we disassembled it I did put a meter onto the switch terminals but it appeared there was no voltage at all there - this was the same issue we had with the other shield
I assume there should be a voltage at the common pin of the on/off switch? I have also checked that there is no solder shorting out the switch terminals that could be causing the issue - they are ‘clean’ from that point of view
I assume the on/off switch doesn’t require programming?
Thanks for the pictures. Some of your solder joints look like they might not be making very good connections. I recommend touching up the soldering on those pins. This Adafruit soldering guide has some good tips and references for what the solder joints should look like when you are finished. Could you try going over your soldering again to make it look more like the pictures in that guide?