[Mod] ThruNite TN-31, How to increase the current to the led

[AlexGT]

I very lightly filed the center pad with a dremmel just enough to expose the copper, Stock PCB appears to not have a direct to copper path.

Here is a google translate of the German Light Forum where they talk extensively about the mod along with current measurements at the LED

ThruNite TN31 Strom-Messungen und Treibermodifikation

Here is the detailed mods I did to mine

Here is how to mod the ThruNite TN-31 flashlight...

Here is a tutorial on how I modded the thruNite TN-31, I did the mods over several days, and the results are well worth it! :bigsmile: Sorry but the SD card where I had the pics became corrupted! :_( To open up the light and to access the emitter you need to put the TN-31 head in a plastic ziplock bag for 2 minutes in boiling water then use strap wrenches to open it up. Be careful not to loose the tiny steel ball and gold spring that are under the metal brightness selector ring, remove them a…

How to open the head up

How to unscrew the head of a ThruNite TN-31

I finally removed the head of my TN-31, It was a royal PITA! This is how I did it: Bring water to a boil and turn off the heat. Put TN-31 head inside a ziplock bag and dunk it in the hot water make sure the whole head is covered in water while keeping it dry inside the bag, Leave it aprox. 2-3 minutes in the hot water. Wear gloves! The TN-31 head will be very hot when you get it out of the bag S) Using strap wrenches apply force in counter clockwise rotation,If still stuck dunk it in…

HTH
AlexGT