How to open a U2, The Video. :)

Here's how to open a U2, starting with removing the selector ring with rubber inner tube strips and ending with opening the head with thick cowhide strips and visegrips:
http://www.youtube.com/v/xebta_RxdLQ

cool video!

For those of you old enough, it reminded me of this old TV show




Pablo

Cool video!
Gottat try it tonight.
thanks Grnamin.
:thumbsup:

What about digging into the driver? And the Hall effect sensor.

Thank you, all. Pablo, I remember that show.

65535 said:

What about digging into the driver? And the Hall effect sensor.

Click to expand...

To get at the driver and hall sensor...
1) Open head (see video)
2) Lift up on heatsink with a plastic knife to expose the driver board:


3) There are two Phillips screws that secure the driver board and hall effect sensor in place. Remove the two screws.

4) Push the driver board out from the positive spring contact end. Take note of the driver board position so that you can put it back in the same position.

You've just helped out Surefire's Warrenty Department by helping a lot people void their warrenties. :laughing:

what is the point of taking apart a perfectly good & Very expensive flashlight in a manner that voids the warranty?

Thanks for the great video. Very instructive.

To mod it to a Cree or better LuxV?

That would be tricky I wonder is anyone has attempted to make a regulator with a Hall sensor for the U2 or some ultra tiny driver that takes the regulators output and drops it to cree range. At 6 votls that cree may insta flash.

65535 said:

At 6 votls that cree may insta flash.

Click to expand...

usually when an led burns up it turns all difernt colors then goes out. at least with 5mm they do. so no it wont insta flash, at least for 5 secodns

You make it look oh so easy!

Does it use a microchip uC ? (thinking about reprogramming :devil: )


Pablo

You make it look like you've done that a couple times before...

Do you boil, bake, or blow-torch the thing before you start, to help loosen up the loc-tite?

Does the selector ring or c-clip take any damage when it is removed that way? It seems like it must get forced past its stop to get removed.

Ty_Bower said:

You make it look like you've done that a couple times before...

Do you boil, bake, or blow-torch the thing before you start, to help loosen up the loc-tite?

Does the selector ring or c-clip take any damage when it is removed that way? It seems like it must get forced past its stop to get removed.

Click to expand...

I use a heat gun of the bezel pieces won't budge, but I don't like doing that because I've bubbled two reflectors due to excessive heat.

The selector ring jumps on top of the stop. Sometimes it loses a little bit of plastic, but not enough to affect its performance. The c-clip doesn't sustain any damage.

PEU said:

Does it use a microchip uC ? (thinking about reprogramming :devil: )


Pablo

Click to expand...

Hopefully Glockboy will chime in as to what the driver board looks like.

You gotta love Vise-Grips!

Vise-grips and Leather strips...

65535 said:

That would be tricky I wonder is anyone has attempted to make a regulator with a Hall sensor for the U2 or some ultra tiny driver that takes the regulators output and drops it to cree range. At 6 votls that cree may insta flash.

Click to expand...

That's why there's a circuit in there, 65-, so the LED doens't get hit by 6V.

batman said:

what is the point of taking apart a perfectly good & Very expensive flashlight in a manner that voids the warranty?

Click to expand...

Sounds like you think that's a bad thing? :thinking: Nothing will stop a determined modder from peering inside any light (or other objects, for that matter) that fall into their hands. I call that curiosity, and it's a good trait to exercise - it's a great way to learn how things work, and I encourage everybody to do that and share.

Keep'em coming, grnamin! :goodjob:

But doesn't the stock U2 pump 6 volts into teh LuxV? and crees run at 3?