Remove the propsNote the position of the propellers. If the quad flips or does not take off after reassembly, you probably have installed them in the wrong order.
Open the craftThat is not as easy as it sounds. The phillips screws are easy enough to remove.But the brackets were harder to unlatch than I thought.
I found it easiest to wedge a fingernail between the PCB and the top shell and unhook the plastic bracket with a spudger.
Locate the fault
I had noticed the green enamelled wires protruding from under the top cover.
Quick fixThe cleaner solution would have been to fix the wire's insulation with some kind of varnish. But I didn't have that within arm's reach. What I had instead was a roll of Kapton tape. (Or a cheap knockoff) to insulate the switch's housing against the green wire.
ReassembleI aligned the wires carefully and fitted the camera back into it's place. It all fits tighlty into the the shell, so some care has to be taken to arrange things properly.
To see if it charges normally, I inserted my USB-Meter. Everything looked normal, for what is regarded as "normal" with a charger basically consisting of a 2.2 Ohms resistor.
Well... It does fly. But I don't like the handling/control. A touchscreen might not be the best way to control a drone, or it needs a lot of practice. I have flown quite a few drones but find this one particularly hard to handle.
The recordings are not too great either, but I'll do a bit more research on that.