Use some electrical grease on the power contact pins on the mount where the zumo attaches.
They corrode due to being "live" and living in a damp climate. They're far to delicate and "ping" off very easily.
Seen two with the problem now
They corrode due to being "live" and living in a damp climate. They're far to delicate and "ping" off very easily.
Seen two with the problem now

