I think I need a bec!

[cosworth34677]

So I got my dozer back up and running, I was running it today and it would run good for a minute or so fine and then it would just stop running and act like the radio in turned off , t
It would keep doing what it was before power drop like just keep running straight, but no radio control! I run a tactic ttx850 and it's got the two escs for the tracks , the esc for the pump, and the three servos, and a fan and lights... ya that is alot. Bec or need radio ?