My oldest kid dropped this light... way too long ago and it stopped working. The light is very simple electrically and the switch was fine, so off to get a new Nichia pill/driver/LED combo. As a bonus, the newer (since like 2018, I've had this flashlight for a while) driver has much better mode spacing. The part was pretty cheap ($25), Benjamin was friendly/helpful, and I'm a happy camper.

Removal was a massive pain due to the tight packaging and threadlocker. Amusingly, the switch side had no threadlocker and came out easily using snapring pliers. I had to make a 'custom' tool to remove the driver. Annoying, pill itself was also threaded in addition to the retainer. The pill also didn't have as great of a spot to key into it, so removal was a one way road.

Thankfully no threads were harmed, everything went back together easily, and I have a working tiny pocket light again.