One of my headband magnifiers has a headlight above the brim, an incandescent flashlight bulb powered by a pair of AAA alkaline cells, that hasn’t worked well since the day I bought it. This being a time of finishing small projects, I finally tore it apart and discovered that the cells and contacts were in fine shape (!), the bulb (remember bulbs?) worked, the wiring was OK, but the switch was bad.
The switch body seems to be firmly anchored in place, so I pried that red base plate off in situ, un-bent the silver-plated (!) spring-contact-actuator, and reassembled it in reverse order. No pictures, as it took less time to do than to tell, but it now works perfectly… most likely, for the first time ever.
Stop squirming! This can be much more painful…
I’m mildly tempted to hotwire the guts of a white LED flashlight into the thing, but that would require either another AA cell or a booster circuit and I’m not ready for that just yet.