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Originally Posted by GriffinRU
I am a little bit confused with pictures, is it possible to get a picture which cover full board at once? Quality is great but one piece is always better.
Brian as you mentioned caps can fail under overvoltage and when exposed to currents higher then rated. Rated voltage depends on temperature. Reverse polarity also cause caps failure. Now if you put al this together it can be clear how and when they can fail, especially with poor battery connection.
For tantalum caps reversing polarity is very bad and irreversible ending up with short (90%) or open.
So far looks like tantalums here Ok. By the way what is sparking or where you see sparks?
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whatever pictures I have posted are the only ones I have. I didn't take other pictures before I assembled it, and I can not remove the controller from the casing.
Reverse polarity isn't a possibility. and for overvoltage, I'm running 5s on the truck, so don't think so. and it sparked when the controller was switched off, and the truck was just sitting on the ground..
if you look on the first page, there's a picture of the gap in the case, that's a result from my friend milling out a pocket in the case. a few sparks shot out of that opening,. I immediately unplugged the batteries, and smelled the controller, and it smelled like electrical smoke..
so I'm still as clueless as when it first blew.. do you guys think we're getting somewhere? :032:
Hybrid Mode
