This Android based sat nav was sent to me by Alan, who used it for about a year before it started struggling to find satellites.
I'm wondering if the satellite reception issue was caused by degradation of the adhesive on the very rough internal screening, the impedance of the battery rising, or degradation of filter components.

The battery tested with a capacity of around 1Ah, and using a PSU in its place resulted in an active current draw of 600mA and a decent satellite lock.

The unit is reminiscent of the horrible low-spec tablets that came out when the Android system first appeared. Many manufacturers tried to make the units as cheap as possible, resulting in a very sluggish interface, but actually not that bad for an application like this. Google stopped supporting low-end devices a while ago, so they will have to rely on their own software. I'm not sure how easy it is to update maps on something like this. A modern tablet using Google Maps would be a preferred option.

My first experience of sat nav was a Tomtom Go. I was travelling with a film grip and he handed me the unit. I had never seen one before, and I was so impressed that the next day I went into the city centre and bought one. It made travelling to film, TV and other work locations infinitely easier than with maps.

If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:-
  / bigclive   (extra streams and channel interaction)
Or alternatively:-
http://www.bigclive.com/coffee.htm
This also keeps the channel independent of YouTube's advertising algorithms allowing it to be a bit more dangerous and naughty.
#ElectronicsCreators