Swiss arms compact torch

brenak47

Can anyone tell me if the bulb can be replaced if so how and where do i get them.
http://www.junnicairsoft.com/index.php?main_page=product_info&products_id=470

ShRT

In theory everything is possible! There will usually be a driver board to take the power from the batteries and regulate it for want of a better word so that there is a constant current for the led.
http://dx.com/p/1-5v-4-2v-3w-cree-circuit-board-for-flashlights-16-7mm-5-6mm-25505

The led is usually mounted on a heatsink board (often called a star due to its shape) http://dx.com/p/osram-3w-180lm-6500k-white-light-led-emitter-silver-white-20mm-dc-3-2-3-8v-189069

Thats the complicated way though. Usually most of the time you can find a replacement drop in. If you open up the front you should find something that looks like this: http://dx.com/p/cree-q5-led-drop-in-module-3-7v-18v-input-11621
With some measurements and pics it should be possible to find a suitable drop in for it.

brenak47

Its similar to the star style.Its a round white circuit board with the bulb and was hoping the whole thing wasn't the bulb unit but guess it is.Thanks man at least now i know what to look for.I Appreciate it.:)

ShRT

Nay bother. It might be easier to go with one of the drop in's as that would replace the whole lot in one go or you could end up with a fresh led in place and a dodgy driver board blows it on you straight away.

You could stick a multimeter across the output of the existing driver and see what its at - should be 3-4V

There is a good guide on it here

Of course it could always be the switch that is gone!

brenak47

Had another headlamp with the same drop in board in it so i took out the soldering gun and i now have it working again.Thanks for everything man u were very informative fair play to u.

ShRT

ah excellent! Out of interest, what is the spread like now on the beam with the new led?

brenak47

Its a different led so its a bit wider spread but it works so im happy.

ShRT

You might be able to put a paper/card shim in between the new led and reflector and it should get more light caught by the reflector and tighten the beam

brenak47

Oh right i'll try that out thanks.