Video for Gearbest support – Defective (Overheating) ESC from Dubai 210 Race Quad. It heats up until I can smell it in about 20 seconds after motor is in use. 3 other ESCs have no problem and the problem continues for the defective ESC on different flight controller ports and with different motors.
got the same problem
http://www.rcgroups.com/forums/showthread.php?t=2651947