Help: Stacking 7135 chips in Biscotti drivers (using XML2 LEDs)

[vwpieces]

@MascaratumB

@vwpieces

Just a heads up,
The driver I stacked the 7135 on was a Thorfire BD04. It only had 4X7135 and now mine has 4X. I didn’t skip any legs so mine worked.
Another member skipped the center and luckily he was knowledgeable to figure out why his mod failed.
BD04 is an Odd driver with a backward battery and charging but none the less it needed the center pin connected.
https://budgetlightforum.com/t/-/38827/26

Thanks vw I’ll take that into account when soldering my tips
So many ways for the same thing is some times confusing, so I’m glad to have people here to help on this :+1:
I guess I’ll have to wait a bit to make my new attempt on stacking as I need new drivers! I may order some spare just in case I fail
Thanks again !!

I deleted that post and was going to make it different. No worries.
the solution was around post #32 on page 2. I’ll just repost the link…

https://budgetlightforum.com/t/-/38827/32

[Jerommel]

When i stack 7135 i prepare them by removing the middle leg and bending the 2 outer legs down.
Then i put a droplet of super glue on to of the present 7135 and put the prepared one on top.
Then i solder the outer legs on to the bottom one.
And then i bend down the big tab so i can solder it to the bottom one with a fairly large amount of solder, so that it has a decent thermal path

I also did this some time ago:
What did you mod today? - #2400 by Jerommel

[MascaratumB]

@vwpieces

I deleted that post and was going to make it different. No worries.
the solution was around post #32 on page 2. I’ll just repost the link…

https://budgetlightforum.com/t/-/38827/32

@Jerommel

When i stack 7135 i prepare them by removing the middle leg and bending the 2 outer legs down.
Then i put a droplet of super glue on to of the present 7135 and put the prepared one on top.
Then i solder the outer legs on to the bottom one.
And then i bend down the big tab so i can solder it to the bottom one with a fairly large amount of solder, so that it has a decent thermal path

I also did this some time ago:
What did you mod today? - #2400 by Jerommel

Thanks vw!! Hell, this is getting crazier on my head
But i’m mixing it all up and then I’ll conclude with the driver, the chips and the iron solder on my hands :nerd_face:
So: ZozzV6 and Jerommel solder the back tab and 2 tips in the front; and on the BD04, besides soldering the back tab, the front pin has to be soldered!

An then Jerommel makes that:!!!: Dude, that’s insane!!! But awesome :smiling_imp:
Did it work?

Damn, I really have a lot to learn :person_facepalming:

Thanks sharing for your suggestions and experiences! It’s helping a lot