vero18 burned out?
- Thread starter Thorhax
- Start date
churchhaze
Well-Known Member
Did it light up? What current were you running it at?
What driver are you using, etc?
You either didn't wire something right, or the gods are just punishing you
What driver are you using, etc?
You either didn't wire something right, or the gods are just punishing you
churchhaze
Well-Known Member
Are you using a voltage source instead of a current source?
Positivity
Well-Known Member
Yeah..looks like it was tight on one end and lifted a bit on the other. Heat had nowhere to go but cook the led
I've hooked my cobs in reverse plenty..never seems to damage them..
. I don't think even a short would do that but I haven't tried that yet..
Just looks like it got hot
I've hooked my cobs in reverse plenty..never seems to damage them..
. I don't think even a short would do that but I haven't tried that yet..Just looks like it got hot
AquariusPanta
Well-Known Member
That was my initial conclusion after my gander of the picture. Damn.
Those eggs look overcooked!
FranJan
Well-Known Member
Double Damn 
! Keep your chin up Thorhax. I bet even Supra has burned a few COBs . Fuck man, I 'm staring at a stack of Illumitex LEDs worth 100.00+ all burnt to shit. Consider it the cost of your LED education . Anyway some friendly advice, hmm? Maybe you should try some thermal adhesive instead. Just polish the heatsink up a bit, then apply a very thin coat, press down and BAM done. There's a guy who sells it for a couple of bucks on Amazon. Makes mounting COBs a lot simpler though it takes a chisel to get the sucker off.
! Keep your chin up Thorhax. I bet even Supra has burned a few COBs . Fuck man, I 'm staring at a stack of Illumitex LEDs worth 100.00+ all burnt to shit. Consider it the cost of your LED education . Anyway some friendly advice, hmm? Maybe you should try some thermal adhesive instead. Just polish the heatsink up a bit, then apply a very thin coat, press down and BAM done. There's a guy who sells it for a couple of bucks on Amazon. Makes mounting COBs a lot simpler though it takes a chisel to get the sucker off.
Positivity
Well-Known Member
That heat sink looks like you could use window screen holders...the kind that swing up and down..lol. Could be a screw in makeshift holder...pin it at 4 corners...
May want to consider a little better heat sink. I'm not sure that it will cool well enough even when setup more securely. Maybe you could double up the heat sink and screw them together..just some ideas
May want to consider a little better heat sink. I'm not sure that it will cool well enough even when setup more securely. Maybe you could double up the heat sink and screw them together..just some ideas
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indianajones
Well-Known Member
the question mark on this thread title is misleading lol.
how long did that run before burning out? did you smell
it or what otherwise alerted you to the situation?
good reminder to never take short cuts. lots of folks post
their successes, but how often do we miss the mistakes.
this is how we really learn, thanks for posting.
how long did that run before burning out? did you smell
it or what otherwise alerted you to the situation?
good reminder to never take short cuts. lots of folks post
their successes, but how often do we miss the mistakes.
this is how we really learn, thanks for posting.
AquariusPanta
Well-Known Member
I failed when I tried screwing my Vero 18 into one of my intel heatsinks. I was pissed off. I soon after thought about my options and tried using zip ties to hold the COB down in place, while thermal grease helped level it. Probably not the most secure or snug option but I've had no problems with 2x identical creations, both running for over a month now.
Here is a link to my current operation: https://www.rollitup.org/t/diy-led-frankensteins-crown.848100/#post-10976377
It may serve you in some way or another.
Here is a link to my current operation: https://www.rollitup.org/t/diy-led-frankensteins-crown.848100/#post-10976377
It may serve you in some way or another.
I should admit that I managed to fry a 3070 
Iv'e swapped Isopropyl alcohol for our 'methylated spirits' on different projects before but it aint a good idea for cobs. They just wouldn't work, no power to the one cleaned with 'metho', not without some decent wriggling and inevitable shorting out. Not burnt like that but fried individual diodes(?), fascinating to watch
Iv'e swapped Isopropyl alcohol for our 'methylated spirits' on different projects before but it aint a good idea for cobs. They just wouldn't work, no power to the one cleaned with 'metho', not without some decent wriggling and inevitable shorting out. Not burnt like that but fried individual diodes(?), fascinating to watch
churchhaze
Well-Known Member
I broke a one of the strings of 2 vero 29 somehow.. i'm not sure how, because it came back to life on one of them, making me unsure about my original theory of how i broke it.
A few of the leds on one of my vero 29 is out. I think it's because when i was testing it, the loose connections caused voltage surges. Either that, or it's because thermal grease got in the little holes on the cob. Sorry, this story isn't very epic.
Here's a more epic story. I was screwing in a mounting screw on an artic 11 and the head sheered off. After 10 minutes of messing around with plyers, i got the screw out cleanly, put another screw in, and somehow managed to sheer the head off..... I got it out by drilling a circle of holes around it until it fell out..... That one only has 3 screws now.....
A few of the leds on one of my vero 29 is out. I think it's because when i was testing it, the loose connections caused voltage surges. Either that, or it's because thermal grease got in the little holes on the cob. Sorry, this story isn't very epic.
Here's a more epic story. I was screwing in a mounting screw on an artic 11 and the head sheered off. After 10 minutes of messing around with plyers, i got the screw out cleanly, put another screw in, and somehow managed to sheer the head off..... I got it out by drilling a circle of holes around it until it fell out..... That one only has 3 screws now.....
churchhaze
Well-Known Member
Let me tell you... I've smoked pot in my day. Not the weed, but potentiometers. Burned pot.
mc130p
Well-Known Member
Haha guys, I fried my first 3070 attempt...I had too much thermal paste and so when I overtightened the mounting screw on the holder, it cracked the ceramic. It was neat watching it smoke and burn up, after I got over the money I wasted, lol.
I think I learn best by screwing things up anyway
I think I learn best by screwing things up anyway
Positivity
Well-Known Member
Hmmm...I've burned about 10 deep reds at once wiggling a loose wire, cracked a 3070 base removing one not being careful, fried a 12v power supply the other day..think some metal shavings got inside of it...fried a fan controller giving it 12v when it only wanted 5v, and sent a 1/4 copper plate flying back at me from using a wood blade to cut metal on a table saw. Left a small abrasion through my long sleeve...Diablo metal blade on the way...and kickback guard always on for me
Off the top of my head..
Off the top of my head..
SupraSPL
Well-Known Member
I have cracked the base of a one CXA3070 although it still works, fired a handful of 12V fan PSUs by hooking AC to the DC side (impressive fireworks), fried a handful of fans by hooking them up to the output of LED drivers, fried $100 worth of Golden Dragon reds and Dominant deep reds because of sloppy soldering connections and a homicidal LED driver. If a piece of equipment in my shop malfunctions, it is much more likely to be my fault than Chinas fault
Sorry to heat about your Vero Thorax, all of us DIYers benefit from the lesson.
Sorry to heat about your Vero Thorax, all of us DIYers benefit from the lesson.
Positivity
Well-Known Member
I'd say...
Ditch the wire nuts and just cut the wires to length. They'll block light and possibly get zorched from the heat coming off the emitter
Space the emitters out evenly on the heat sink to distribute the heat evenly
If the screws aren't lining up don't use one screw...better off with a thermal adhesive pad. Even better would be a predrilled hole and a self tapping screw....or supras TIM plus kapton tape
And one last thing. Clean the heatsink up. Sand it down then wipe down with ISO alcohol until it's clean and shiny. That film won't help things
Just my 2c...looks good otherwise. Nice case and setup
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