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Burnt new 30w Neje board driver..

solobeam

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Oct 3, 2020
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Accidentally applied 24v, instead of 12 and despite no magic blue smoke, it's dead now. The board's plus and ground are now shorted, when examined with multimeter. Visually, I don's see suspects.
Which component is, most likely, quit working, guys?


20201003_122042.jpg
 



gazer101

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Feb 23, 2020
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Probe the transistors, maybe something melted on the inside of one of them 😬

I'm no expert, but I assume that if you compare the readings you get from each part to those in their respective datasheets, you'd eventually figure out what shorted
 

solobeam

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I suspect, it could be the sot 23-6 smd part, which is, most likely, some sort of voltage regulator. Sadly, no way to read the markings on it.
 

gazer101

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Well if you don't know what the IC is, there's no guaranteed way for you to purchase the appropriate replacement for it (unless you're willing to experiment a lot). You'd have to either ask the OEM for the circuit schematic (doubt they'd hand it over) or buy a new unit
 
Last edited:

solobeam

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Thanks, I'm willing to look for an alternative board, will probably post in boards section. Contacted the manufacturer, but have little hopes..
 




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