After converting another fluorescent shoplight into an LED fixture, I tested its capacitors:
The ESR02 reports one as a 4.8 µF capacitor, the other as a “defective part” with a 4 kΩ resistance. Having a cap fail by turning into a resistor is surprising; I’m more surprised it didn’t simply burn up.
They’re visually indistinguishable, of course.
The Smell of Molten Projects in the Morning 