Repairing an LED E-Bike Headlight

Hope this is posted in the right section.

Trying to repair an E-Bike headlight.

Here are all the specs. that I can find:



It can be powered with existing DC-DC 12V converter or a li-ion pack of 2S or 3S. Supported voltage limits: 6V-13V.
The light has 2x CREE XP-L LEDs, 4700K color temperature.
Light has 3 modes: low, medium, high (no flashing, no strobe).
Power consumption: 17Watt



The light was damaged do to too high of an input voltage.

The vendor is no longer in business.

I am guessing that the control board is faulty. After searching for boards, I cannot figure out which which one to buy, or even where to buy it.

Is it possible to determine a replacement board based on the specs. posted above?

Here are a few pictures of it.

Thanks.

https://imgur.com/a/okNMp3t

The amount you might spend id personally look at something's like these 3000 lumen 18w 10 to 80v lights. Even if you just used the guts. Got one as my high beam on lanes and cars pull over miles ahead lol



https://rover.ebay.com/rover/0/0/0?mpre=https://www.ebay.co.uk/ulk/itm/273484077147


A whole bunch turn up if you search 80v cree motorcycle led and press search in description

https://rover.ebay.com/rover/0/0/0?mpre=https://www.ebay.de/ulk/itm/253193334695

Gutting another light may be a good option. Need to keep the original housing though because it directs the beam on to the roadway without blinding oncomming traffic.

The housing has enough room in it that a larger board would fit in it if needed.

Like this:

https://imgur.com/a/7hUkvcf

Thanks for the idea.

Would any old dcdc buck converter work. Ive seen smaller ones. Could locate the converter in the frame and just run the power out to headlight.

I once hijacked the trim pot with a three speed switch and resistors so i had 2 modes. I also ran one with an external large trim pot for fully variable output

https://www.ebay.co.uk/p/Lm2596-Swi...9%26rvr_ts%3D3dd078751670aa4151535996ffe0560f

Would this work?

https://www.ebay.com/itm/113232458267

Input Voltage: 3V ~ 12V
Output Current:2.5A(MAX)
Diameter:22mm
Used for LED:Cree XM-L T6 U2,XM-L2 U2 U3,XP-L V5 V3 V2,XHP50 Series

Ive also used similar and they do work but i found it a pain cycling through modes while riding so id recommend 1 to 3 modes max. Also it says xhp50. Thats a 6v or 12v led (probably a mistake).
Id guess your leds are 3v?

I didnt recommend these initially as you said you went over 13v to blow the last one. Mine run off my main ebike battery which is pretty handy.