wasBlinded
Flashlight Enthusiast
For a little project of mine, I needed a couple of U2 tailswitches to mangle, so I solicited some broken ones from my CPF colleagues. Thanks to Mokona2 and ChocolateLab33 for providing these to me.
The problem some people have been having is that the light might not go off when the switch is in the "off" position. I decided to try and figure out what the problem was since I was going to be gutting the tailswitch anyway.
The tailcap is easy to disassemble. I fixed mine in a vise, and was able to unscrew the rearmost bezel without too much trouble - there wasn't much threadlocker here:
Take a look at the switch assembly, work the switch, and see how the little metal tab indicated in the picture makes contact with a little disk inside the switch assembly. The problem is that the metal tab(s) (one on each side of the switch) are bent too far in, and can make contact with the disk even when the switch is in the off position. What you will want to do is bend these tabs outward a bit. Its easiest to do this by pushing them out from inside the switch barrel.
For the next step, you put a little screwdriver or blade between the aluminum bezel and the plastic switch barrel assembly and wedge the switch barrel assembly off. Careful here, there are small parts which might get away from you, but they are easy to put back in their proper positions. Now you can look into the switch barrel and see the two metal tabs you need to push out just a bit, using a small screwdriver or other probe. Do it a little bit each time and reassemble the tailcap to test it until it is working like you think it should be.
Its really very easy to do, with not much chance of mucking anything up.
The problem some people have been having is that the light might not go off when the switch is in the "off" position. I decided to try and figure out what the problem was since I was going to be gutting the tailswitch anyway.
The tailcap is easy to disassemble. I fixed mine in a vise, and was able to unscrew the rearmost bezel without too much trouble - there wasn't much threadlocker here:
Take a look at the switch assembly, work the switch, and see how the little metal tab indicated in the picture makes contact with a little disk inside the switch assembly. The problem is that the metal tab(s) (one on each side of the switch) are bent too far in, and can make contact with the disk even when the switch is in the off position. What you will want to do is bend these tabs outward a bit. Its easiest to do this by pushing them out from inside the switch barrel.
For the next step, you put a little screwdriver or blade between the aluminum bezel and the plastic switch barrel assembly and wedge the switch barrel assembly off. Careful here, there are small parts which might get away from you, but they are easy to put back in their proper positions. Now you can look into the switch barrel and see the two metal tabs you need to push out just a bit, using a small screwdriver or other probe. Do it a little bit each time and reassemble the tailcap to test it until it is working like you think it should be.
Its really very easy to do, with not much chance of mucking anything up.
