Here are nearly all the parts from a recently failed fluorescent bulb, which I disassembled:
Most of these parts are perfectly good, mostly generic electronic components that often end up in the trash. All because of these:
Yes, a rotting electrolytic capacitor. The Great Capacitor Plague is supposedly a thing of the past, but bad capacitors still show up quite often. One cannot help but wonder about the possibility that this is not altogether accidental… after all, more frequent replacement of these supposedly long-lasting bulbs means more profit to manufacturers.