Convoy driver problem

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Kyleag89
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Convoy driver problem

Hi guys I have another Convoy 7135 2.8a driver that is only working on 100%.  I soldered 2 380mv 7135 chips on for a total of 10 chips.  I put it in a Kaidomain p6 drop in to replave the bd39 driver it had.  The soldering went well and was my best job to date I thought.  The same thing happened to me last month while adding 2 chips.  What gives with these older style 2.8 7135s?  Ive soldered many other types of driver with no issues.

treellama
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Check for shorts against the reflector?

MascaratumB
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Probably any contact with the solder from the chips and the pill or something. I would not focus on the reflector but on the driver/ spring/chips.
I had the same issue once, but I never tried to resolve it (the light works well with only one mode).

Kyleag89
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Ive never tried anything other than inspecting my joints to make sure they weren't contacting something they shouldnt.  The first light i wanted 1 mode anyways but this new one i want the 4 different brightness modes.  The drop in has an XM-L2 which mounted in a KDlitker E6 host.  It gets very warm quickly!

Henk4U2
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If the light has only one mode (“Turbo”) the cause is probably a short with the body. This can occur with any part of the driver that is in direct contact with the black lead to the emitter(s).

You are a flashaholic if you are forced to come out of the closet, to make room for more flashlights.

Kyleag89
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Thanks so much everyone I found the problem with your help!  The reflector is touching one of the leads to the LED.  As soon as I removed the reflector the mode groups worked, now to fix my soldering job...  They really don't leave much room for anything inside a flashlight. 

MascaratumB
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Kyleag89 wrote:

Thanks so much everyone I found the problem with your help!  The reflector is touching one of the leads to the LED.  As soon as I removed the reflector the mode groups worked, now to fix my soldering job…  They really don’t leave much room for anything inside a flashlight. 


Glad you made it Wink
After all, my thought about the soldering was wrong!
Hope you enjoy the light now !
NeutralFan
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You could also try some Kapton tape.

I’d rather use my flashlight around the house than turn on the lights.