by AJM » Wed Sep 23, 2015 11:50 am
Thanks for the reply,
This is a new BMS and when I hooked it up to the battery one of the L.E.D's will not come on when balancing.
It has never come on once, I checked its voltage (B0-B1, B1-B2, etc) and it was high and out of range from the others.
I drained that cell down with a bulb several times but it keeps climbing back up and the L.E.D. remains off.
Contacted the manufacturer and they suggested a possible dry joint, re soldered the spots they mentioned to no affect.
The manufacturer said they would send me one of those transistors to replace the suspect one with, so I was trying to learn what part it is before it arrived. These are very tiny and I really dont think I would be able to replace it properly without damage to the board, I do not have great soldering skills and have never undertaken this kind of repair before.
I am a Heavy Duty mechanic, compared to the stuff I work on this is micro surgery (to me).