GO 5200 repeatedly shutting down and restarting
It starts with the drums, then the blue world map. It then displays "2 updates" and "show updates" buttons at the bottom of the screen, initially with the world map background, sometimes followed by the local map very briefly. After a few seconds the screen goes blank, then displays the update buttons again - initially on the world map background, then a blank background, then on the local map - before going blank again. This cycle is repeated twice more, then the device displays "shutting down" before restarting with the drums and world map again.
It makes no difference whether the device is charging or not.
I have tried restoring the device using TomTom connect as described elsewhere. Initially it seemed to be successful, and required the re-inputting of the WiFi password. It was stable at this point, but as soon as this was done the unit went back to the previous shutting down behaviour. I have tried again, and although is says it is restoring the device no progress appears to be made. Several hours have passed so far, it only took a few minutes before.....
The buttons displayed on the screen are not active.
Any suggestions gratefully received!