I think I broke something.

32 posts / 0 new
Last post

Pages

ThirdHandChain
Offline
Last seen: 2 days 14 hours ago
Joined: 09/05/2019 - 16:07
Posts: 9
Location: Virginia, USA
I think I broke something.
  • Hello all. Noob here with a noob question. My latest learning experience is that if you stack 18350 10A batteries in a 18650 Convoy S2+ SST40 it will quit working. Would anyone care to tell me what I fried did and why it was a terrible idea? Thanks in advance, and I appreciate any advice on how to fix my favorite light. 
THC
Scallywag
Scallywag's picture
Offline
Last seen: 9 hours 7 min ago
Joined: 01/11/2018 - 22:23
Posts: 639
Location: Ohio, United States

Hi there.
You put the batteries in series, delivering (depending on charge) probably around 8 volts to a 4 volt system. The SST40 will fry at that voltage, but what probably fried first was part of the driver electronics.
To repair it, you’d need to replace the driver at the very least. I’d also test the LED, but unless it got extremely bright for an extremely brief period of time, it likely wasn’t impacted.

EDC Rotation: ZL SC62 | Jaxman E2L XP-G2 5A | Purple S2+ XPL-HI U6-3A | D4 w/ Luxeon V | RRT-01 
EagTac D25C Ti | DQG Slim AA Ti | UF-T1 by CRX | Olight S1 | Klarus Mini One Ti
L6 XHP70.2 P2 4000K FET+7135 | Jaxman M8 | MF02 | Jaxman Z1 CULNM1.TG | Blue S2+ w/ ML Special
In-progress: Supfire M6 3xXHP50.2 
Others: Nitecore EC23 | Nebo Twyst | Streamlight ProTac 1AA | TerraLux LightStar 100

Yokiamy
Yokiamy's picture
Offline
Last seen: 8 hours 14 min ago
Joined: 10/18/2016 - 15:47
Posts: 1712
Location: Netherlands

Well, you have used two cells in series, which makes 8,4V (when fully charged) and the driver is not suited for that, since it is designed for a single cell (4,2V)
Maybe you even fried the LED

Budget Light Forum ...where Frugal meets with Flashlight!

 

WTS BLF GT

 

mortuus
mortuus's picture
Offline
Last seen: 16 hours 10 min ago
Joined: 12/16/2014 - 09:33
Posts: 2022
Location: Sweden

easier to just buy it a new light and never use double batteries.

...where Frugal meets with Flashlight!

texas shooter
Offline
Last seen: 28 min 17 sec ago
Joined: 08/26/2012 - 02:14
Posts: 1274
Location: Texas

Since it’s your first post, some information. LED’s use current for brightness and run time. Unless specified extra voltage does nothing for either. Exceed it and the driver will fry quickly.

Yokiamy
Yokiamy's picture
Offline
Last seen: 8 hours 14 min ago
Joined: 10/18/2016 - 15:47
Posts: 1712
Location: Netherlands

I agree with Mortuus, pricewise that would be even more attractive (and easier)
The S2+ isn’t very expensive, a new driver and MCPCB plus LED would cost you probably around 12$

Budget Light Forum ...where Frugal meets with Flashlight!

 

WTS BLF GT

 

ThirdHandChain
Offline
Last seen: 2 days 14 hours ago
Joined: 09/05/2019 - 16:07
Posts: 9
Location: Virginia, USA

I've already ordered another one, but I would still like to save the one I have... or at least do something with the host. I don't even own a soldering iron. lol Any drop in suggestions? 

THC
Yokiamy
Yokiamy's picture
Offline
Last seen: 8 hours 14 min ago
Joined: 10/18/2016 - 15:47
Posts: 1712
Location: Netherlands

Suggestion, buy yourself a soldering iron.
Convoy lights are ideal for practicing modding, this is your chance to become a true BLF’er

Budget Light Forum ...where Frugal meets with Flashlight!

 

WTS BLF GT

 

DavidEF
DavidEF's picture
Offline
Last seen: 1 hour 50 min ago
Joined: 06/05/2014 - 06:00
Posts: 7586
Location: Salisbury, North Carolina, USA

You’ll need to have some way of melting solder if you want to repair the light. Probably both the driver and the emitter are fried.

The Cycle of Goodness: “No one prospers without rendering benefit to others”
- The YKK Philosophy

raccoon city
raccoon city's picture
Online
Last seen: 7 min 58 sec ago
Joined: 10/06/2010 - 02:35
Posts: 13049
Location: रॅकून सिटी Palm Desert CA USA

ThirdHandChain wrote:

I think I broke something.

Yep, you broke the font size in the OP!

Yokiamy
Yokiamy's picture
Offline
Last seen: 8 hours 14 min ago
Joined: 10/18/2016 - 15:47
Posts: 1712
Location: Netherlands
raccoon city wrote:

ThirdHandChain wrote:

I think I broke something.



Yep, you broke the font size in the OP!

Disagree, he just uses the possibilities of BLF
Just like you.

Budget Light Forum ...where Frugal meets with Flashlight!

 

WTS BLF GT

 

ThirdHandChain
Offline
Last seen: 2 days 14 hours ago
Joined: 09/05/2019 - 16:07
Posts: 9
Location: Virginia, USA

I hope you didn't catch that nasty T virus in Raccoon City. (I'm assuming that's a Resident Evil reference) lol Is there a recommended font size?

THC
raccoon city
raccoon city's picture
Online
Last seen: 7 min 58 sec ago
Joined: 10/06/2010 - 02:35
Posts: 13049
Location: रॅकून सिटी Palm Desert CA USA

ThirdHandChain wrote:

I hope you didn't catch that nasty T virus in Raccoon City. (I'm assuming that's a Resident Evil reference) lol Is there a recommended font size?

I've got the t-Virus bad!

The default font size works well most of the time.

I wouldn't go smaller.

A little bigger is okay, too, in my opinion.

iamlucky13
Offline
Last seen: 2 hours 44 min ago
Joined: 06/22/2018 - 09:18
Posts: 560
Location: USA
ThirdHandChain wrote:

I’ve already ordered another one, but I would still like to save the one I have… or at least do something with the host. I don’t even own a soldering iron. lol Any drop in suggestions? 

A drop in solution would be about the same price as the whole light, since the Convoy’s are such a low price.

Convoy does sell just the driver for many of their lights, including the SST40 version, but it requires soldering.

I believe this is the correct part, but somebody should doublecheck me:
https://www.aliexpress.com/item/32989372464.html?spm=2114.12010615.81483...

DavidEF
DavidEF's picture
Offline
Last seen: 1 hour 50 min ago
Joined: 06/05/2014 - 06:00
Posts: 7586
Location: Salisbury, North Carolina, USA

If you’re not interested in soldering, you probably have no chance of fixing it. I recommend that you get yourself a soldering iron and learn how to solder, and fix it. But, if that doesn’t appeal to you, the other option is that you could sell it for a much reduced price to somebody here who will be glad to fix it and maybe even upgrade it, while you buy yourself something else. Wink

I have one of these: Yihua 936B soldering station which I bought years ago, and it has been great. I was never able to solder electronics successfully with the cheaper soldering irons that are available. This soldering station is compatible with Hakko brand tips, which are very high quality. But it comes with a nice chisel tip already. I’ve been using mine with no problems for years already.

The Cycle of Goodness: “No one prospers without rendering benefit to others”
- The YKK Philosophy

Macka17
Offline
Last seen: 23 hours 14 min ago
Joined: 05/08/2017 - 02:31
Posts: 835
Location: Queensland Australia

Till you come to old farts like me. Dozer. Jackhammer. Sledgehammer drivers.
Bull at a gate syndrome.

Give me a welder (I had Stick. MIG. and TIG. plus a gas gun and fencing wire.

NOT a problem. I’ll weld anything, UPhand/down/across/overhead/tubing.

Soldering. I overcook everything I put my hands on. Bloody clumsy old git.

Nowadays. I use the ones I like. Stick the ones I bought but don’t like in a box at back of cupboard.
And thank god I’m still breathing.

PS.
Mums old electric Frypan is ideal for melting beads. and drivers off.

ChrisGarrett
ChrisGarrett's picture
Offline
Last seen: 33 min 56 sec ago
Joined: 02/12/2014 - 22:03
Posts: 588
Location: Miami, Florida

“You killed Kenny.”

Start over and don’t use series cells in a light designed for a singular 18650.

Chris

raccoon city
raccoon city's picture
Online
Last seen: 7 min 58 sec ago
Joined: 10/06/2010 - 02:35
Posts: 13049
Location: रॅकून सिटी Palm Desert CA USA

I guess this falls under "Electrocuted."

you_killed_kenny 

goshdogit
goshdogit's picture
Offline
Last seen: 33 min 29 sec ago
Joined: 12/03/2015 - 21:28
Posts: 1015

Macka17 wrote:
I’ll weld anything, UPhand/down/across/overhead/tubing.
That reminds me of Glen Thornton AKA Amazin’ Blaze of Heatin’ & Beatin’ Welding Service.

Check the video description if y’all need help with his accent. Thumbs Up

AguassissiM
AguassissiM's picture
Offline
Last seen: 5 hours 3 min ago
Joined: 12/04/2018 - 19:20
Posts: 108
Location: Canada

goshdogit wrote:
Macka17 wrote:
I’ll weld anything, UPhand/down/across/overhead/tubing.
That reminds me of Glen Thornton AKA Amazin’ Blaze of Heatin’ & Beatin’ Welding Service.

Check the video description if y’all need help with his accent. Thumbs Up

Thumbs Up LOL Beer Just about peed myself Facepalm been awhile since last time i heard that.

***Rofis MR70 - just perfect *TurnRaise - Cree XM-L2 ***Catapult V6 - awesome ***BLF Q8 - spring mod ***BLF Mini ***BLF Micro ***Haikelite MT09R ** Convoy C8 ***BLF D80v2 SST40***

toddcshoe
toddcshoe's picture
Offline
Last seen: 12 hours 36 min ago
Joined: 01/24/2018 - 23:49
Posts: 1886
Location: Foley, MO

If you want to salvage it, I have a pill for the S2+, it has a SST-20 4000K emitter and a 8 chip Biscotti driver. No soldering required. Unscrew old one, screw in new one. Tweezers will be successful at that I betcha. Shoot me your address via PM and I can mail it away if you are interested.

Edit: I take that back, it has a Luxeon V2 at 5000K with the above mentioned driver. Sorry I was thinking of another light.

"Everywhere I go, there I am"

Lightbringer
Lightbringer's picture
Offline
Last seen: 20 min 15 sec ago
Joined: 08/30/2016 - 14:12
Posts: 9168
Location: nyc

I was gonna suggest just getting a cheap ’105C and throwing it in. L/M/H, done.

Alas, no soldering iron, so…

09 F9 11 02 9D 74 E3 5B D8 41 56 C5 63 56 88 C0

ThirdHandChain
Offline
Last seen: 2 days 14 hours ago
Joined: 09/05/2019 - 16:07
Posts: 9
Location: Virginia, USA

I sent you a message and thank you! 

THC
ThirdHandChain
Offline
Last seen: 2 days 14 hours ago
Joined: 09/05/2019 - 16:07
Posts: 9
Location: Virginia, USA

toddcshoe how does the luxeon compare to the SST40? The temperature should be close at least. 

THC
toddcshoe
toddcshoe's picture
Offline
Last seen: 12 hours 36 min ago
Joined: 01/24/2018 - 23:49
Posts: 1886
Location: Foley, MO

Got your PM by the way. Getting it in the mail today or tomorrow. Only light I had with a SST40 in it was a Jetbeam E20R if I remember correctly. Not sure of the tint on that one but I remember seeing a good amount of green in it. I am pretty sure it was a CW tint so that may explain it.

The Luxeon V2 is quite nice. I haven’t noticed any weird tint shifts or anything like that. If the SST40 throws like the SST20 then the Luxeon is more flood than throw. Pleasant beam. Beam pattern seems to be on par with the 219C. Give or take a pinch.

"Everywhere I go, there I am"

ThirdHandChain
Offline
Last seen: 2 days 14 hours ago
Joined: 09/05/2019 - 16:07
Posts: 9
Location: Virginia, USA

Thanks again.. I had two coast s2+ lights, I ordered a 18350 tube, metal tailswitch, magnet, and pocket clip. I blew up the SST40 and gave away the standard one. lol I have two more SST40's (5000 and 6500k) on the way now and an Astrolux S1. The SST40 is the best throw I've personally ever owned in an s2+. If I can fix my blown light with something more floody that would be perfect. Thanks again! 

THC
ggf31416
Offline
Last seen: 1 hour 50 min ago
Joined: 02/25/2016 - 17:38
Posts: 252
Location: Uruguay

What’s fried is likely the driver, not the LED. 8.4V will fry the circuits which don’t have protection against overvoltage in that driver and also the linear FET will attempt to dissipate (8.4 – 3.4)v*5A = 25W as heat, which is not good for a 17mm driver, that’s the same output as a low end soldering iron.

ThirdHandChain
Offline
Last seen: 2 days 14 hours ago
Joined: 09/05/2019 - 16:07
Posts: 9
Location: Virginia, USA

Are you saying that I might be able to use the SST40 with the biscotti driver? I've never really changed an led flashlight bulb and the last thing I want to do is mess it up, again. lol

THC
ggf31416
Offline
Last seen: 1 hour 50 min ago
Joined: 02/25/2016 - 17:38
Posts: 252
Location: Uruguay

Most likely you can if the LED is not damaged as well (blown wires or burned areas), but it doesn’t make much sense if you are getting a full pill. A SST40 is nothing special at 2.8A, they are used in the model with the 5A driver because they are rated for 6A rather than the XM-L2/XP-L/SST20 which are rated for only 3A.

Your SST40 Convoy S2+ is throwy because of the high output and smooth reflector. If you want to make the beam floodier I would recommend that you try an OP reflector (like in a normal Convoy S2+) or one of the TIR lenses .

Edit:Of course using a larger LED like a 3V XHP50.2 would also make the beam floodier, but that requires soldering and the XHP50.2 doesn’t have the prettiest beamshots. The Luxeon V2 shouldn’t be much different in beam profile than the SST40 (but output will be less due to the driver), the SST20 is the one throwier because the LED surface is smaller

ThirdHandChain
Offline
Last seen: 2 days 14 hours ago
Joined: 09/05/2019 - 16:07
Posts: 9
Location: Virginia, USA

Sounds like I really need to get used to the idea of getting a soldering iron if I want to build my own lights. I'm fairly good with tools but electronics... more specifically microelectronics... are something I have no experience with. I guess it's time for me to learn. 

THC
ggf31416
Offline
Last seen: 1 hour 50 min ago
Joined: 02/25/2016 - 17:38
Posts: 252
Location: Uruguay

Ah, I see that you were replying to the assumption that the SST40 throws like the SST20 (so the Luxeon V2 would be floodier). It doesn’t, the SST20 is throwier. IIRC According to koef3 tests the SST40 is not much throwier that the XM-L2 in terms of lumens divided by candelas(intensity)

Pages