So I've had my trusty TI4 for a while and it stopped working on me the other day. I did a little troubleshooting with a variable power supply and it looks like the LED itself if fine, but the driver burnt out. I'm guessing it's due to it turning on in my pocket and me not realizing until it's already heated up quite a bit. It's been a while since I've looked into flashlight LED drivers, but I remembered Aqualab had a nice search feature, but the only 11mm one they had was no longer offered. Anyone know of a driver that will work, or somewhere I can search?