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| The DT was already dismantled in a polythene bag when I received it. |
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| First observation was that the USB charger had no earth pin, so it could not be plugged into a standard socket. |
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| Luckily, I had a very cheap and unsafe Chinese adaptor, which allowed me to test the USB charger. It was dead. So I charged both units from a different USB 5 volt supply on my workbench. |
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| I must admit that it took me some time to notice the next problem. Can you see it? SW1 is missing. This is a pushbutton momentary switch that switches the unit on from standby. There was no sign of it in the bag. |
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| So I took a pushbutton switch from my spares box, soldered two fine wires to it and to the PCB pads (to avoid any strain on the pads). |
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| The switch is placed so that it rests against the edge of the PCB to support the pressure when the button is pushed. To hold it in place, I used hot melt adhesive. |
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| Of course there's a gaping hole where the original rubber moulding should be but I cant reuse it. So what I'll suggest to the owner is that he buy a pack of SUGRU silicone putty and use it to sculpt a new button cover. |
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| Amazingly, the device now turns on. (Change of plan. I cut the button stem shorter, which allowed me to fit the original rubber moulding over it.) |