MMM Explodes into FLAMES!

[hemiblas]

I have been running my MMM on 4S and 5S for a while now with no issues with all types of batteries, motors and configurations. I do a lot of hard starting and stopping and havent had any issues, mostly bashing. I decided to try some 6S setups conservatively geared just to test and have now gone thru 2 controllers in 3 weeks. The same controllers that were operating perfectly at 4S and 5S did not work on 6S for to long. In both cases the controllers failed while the truck was coming to a stop. The second failure took out one of my lipos. I will be sending the second one in this week, but I am pretty sure that if you are using the MMM on 6S and using the ESC for braking, I think the probability of failure goes up quite a bit. Maybe I am just unlucky twice this month, but it just seems like to much coincidence that this would happen. My solder connections were solid in both cases, no binding on the truck, I really have no other explanation as to why this could happen. AFter reading Brians post above it makes sense. On the second controller I could see puffs of smoke coming out as it came to a stop at my feet. I was braking hard as always with the 40 percent brake setting so the truck doesnt flip over going forward.