gangababa
Well-Known Member
Bummer!In my previous post on this thread, I told of reinforcing my button with a suitably sized piece of plastic that fills the space between the button micro-switch and the USB connector. The switch/plastic/USB become a firmer 'sandwich-singularity'. It has been six weeks now with a better button.
Edit to add that the work is not hard, but how to source a small piece of plastic.
The button failed. Or more accurately, it detached from the circuit board. As @badbee says, the micro switch is poorly mounted to the board.
I have been looking at the parts with a magnifying glass and multi-meter.
The bottom of the micro switch has three small bars that seem to contact three small bars on the PCB. There, the L & R bars have continuity with the solder point for the micro switch body pegs. The switch frame and the outer bars have continuity; perhaps all on ground side of system.
The center bar on the micro switch seems to be the normally off leg that has continuity with the system when the button is pressed.
It is almost like the switch contacts are physical like the buzzer, and only the switch frame is soldered to the PCB.
BTW, don't drop the micro switch; it is a bugger to find.