So, I one day I built a led hourglass soldering kit from dubious sources. Turned out the leds were UV and burn out your eyes. So that ended up in the scrap drawer. Now recently hot weather here triggered a mass of flies in my house.
Getting tired of running after them with my mediocre bug zapper I thought, lets boost the zapper so It kills instanly and then I thought, lets make a “pro” fly zapper out of it by combining it in a box with the scrap hourglass kit.
So I went on, soldered the hourglass kit to a 5v power supply (which it needs) ofc also laying around now with everything running off usb voltage. Then I wanted the swatter on the same power supply, but that one runs off 2xAA (3.0v).
I disassembled l the fly swattter and hooked it up to my lab psu. Started monitoring the temps of pcb components with my flir one and started ramping from 3v to 5v. Apparently one part heated up to 80C but then stopped.  I believe its the dc to  ac converter for the transformer, either way it is small, black and shaped semicylindrical.
Anyway, it kept working so I hooked both up to the power supply (smps). 1A wasnt enough so had to boost it to a 2A one got get some light out of the leds, apparantly the zapper is drawing a lot of the available power.

Put a tray of water with soap under it to catch the victims.

For tonight its setup and we will see if it works.

Either way its a nice try instead of letting the parts lay unused