X3ā¦looking good already. I like!!
Well that was stupid.
I just fried a dedomed xpg2 (I hope it was just the LEDā¦.). I spent the last few hours modding a UF-1508 aspheric with a dd xpg2 and a 5.5A MTNMAX driver. The 1508 has a bit of an odd pill and a threaded parabolic piece that screws down onto the mcpcb. After several failed attempts at getting the LED leads soldered flat enough I switched over to flat copper sheet. It worked eventually, just a pain to work with such tiny pieces of metal. So I screw down the securing piece to secure the mcpcb and I think to myself ādonāt forget to pull this back off before testingāā¦ā¦ā¦ I hook up the driver pop in two cells and a flash of light followed by utter disappointment as I instantly realized my mistake. :person_facepalming:
Also swapped my second SRminiās emitters :
7A on the left and 4C on the right
unknown, I thought I was the only one that did stuff like that! 
I just ruined three brand new XP-G2 S4 2B mounted on a triple noctigon. Not going into details.
But we want details 
I put a stacked resistor on an L2 and forgot about reflector clearance when soldering the leads back in, shorted it and fried the driver. I did have Kapton tape on the base of the reflector, but it tore. Iāll be happier with the Bistro driver anywayā¦ 
Still, was hoping to find out what the stock driver was capable of. 
Well I for one am extremely proud of myself. I stacked some chips!
I have never been able to stack chips. Iām a pretty good solderer, but stacking chips has always been disastrous. I have stacked one chip before, but trying to stack a second chip always turned into the ruin of me. Every once in a while I give it a go until I ruin a perfectly good Qlite, and give up.
I have a triple deep red rebel mod coming up, and need between 4A-4.5A, so I got out another driver and managed to stack four 380 7135 chips. Maybe my confidence has improved?
Itās an ugly looking mess, but everything has continuity, and nothing got bridged. Itās that little leg in the center that always gave me grief, so I just cut it off.
I havenāt tested it yet. It should be okay, but Iām afraid if it ends up not working, Iāll break into tears. Tomorrow.
This is it. Please donāt laugh.
Your ahead of me Of with the soldering. Iām sure it will all work ok.
The center leg is just a continuation of the ground tab on back, itās not necessary to solder it.
Thanks Steve.
One chip gave me so much trouble. I couldnāt get continuity no matter how hard I tried, until I realized my DMM had timed out and turned itself off. Stupid.
Thatās the problem. I never try to solder it, but itās so close to the other two legs I always ended up bridging to it. Just cutting the darn thing off and getting it out of the way sure made it easier.
If it makes you feel better I drilled my thumb today. Lucky it was the one that has no feeling. just bleeds.
I modified my brand new Trustfire TR-J20. Very successful resistor mod, I turned it from a 4285 lumen beasty into a black hole battle ax.
Fried the driver. I calculated the 2 R620 and 1 1R5 sense resistors to be ~.2625 total resistance. Jumped right on it and removed the 3 originals soldered an R025 on there. Didnāt catch on til I volcano erupted a large MOSFET on the driver that I could even hear through the thick construction.
Yep, I have DUMBA$$ tatooed on every bone in my body.
We do it for science and the enlightenment of all mankind.
I modded a ZY-T08 to run the batteries in series running through a five amp buck driver and XPL-HI led on copper MCPCB in a new pill made to suit.
Did you design a new battery contact plate for the head, or did you use relics āsolder blobā technique?
Iām not sure what relics mod was.
It has a new switch end and a new end for the power to the driver. I used single sided breadboard but it would of been a lot better and easier with double sided breadboard.
Iāll post some pictures up tomorrow if I have time.
Since I so royally screwed up the TR-J20 yesterday evening, I woke up this morning with it heavy on my mind to fix it.
Now it makes 11,040 lumens on partially depleted Basenās. Gotta get some new XM-L2 U4 1Cās on copper and replace those old XM-Lās on aluminum.
Edit: So if Iām running 3 26650 Basenās in series, and pulling 18.03A, isnāt that over 200 watts? :partying_face:
Did my first mod work in a couple of months. Finally added an illuminated tailcap to my most-used light, my Thorfire TG06.
Three Yellow/Gold LEDs, 1k bleeder, 50k pot.
