I recently acquired a used Thunder Tiger 450 size heli that came with servos, motor and ESC, but no receiver. I wanted to set it up with a Spektrum compatible receiver, as my main transmitter is a DX9. I got a new Lemon DSMX 6 channel receiver - I have used these in planes and helis before, always with success. The YEP 45 amp ESC that came with this heli is unusual (to me) in that it has two sets of wires coming from it, both of which appear to be receiver connections. Both sets have all three wires connected. The only apparent difference between them is that one set appears to be using heavier gauge wiring than the other. It appeared that the previous owner of the heli had been using the heavier gauge 'receiver connection' as this was run to the back of the heli, where the receiver had evidently been before, whereas the lighter 'receiver connection' had a piece of tape over its end. So... I connected the heavier 'receiver connection' to the throttle connection of my receiver, put a bind plug into the receiver, and connected one of the cyclic servos, then I plugged in a battery (3s LIPO, 2200mah) expecting to be able to bind the receiver. But the receiver immediately fried in a cloud of sparks and smoke. Can anyone advise me as to what is happening here? I can only assume that too much voltage was put into the receiver. I'm sure all the wires were connected the normally correct way, with the signal wire (yellow, orange or white) on top and the ground wire (brown or black) on the bottom. I cannot find any documentation explaining why there would be two sets of connection wires on a YEP ESC. And all the documentation I have says that the BEC for the YEP ESCs is fixed at 5.5 volts. So why did this one fry my receiver? I have other YEP ESCs also, and they only have one receiver connection wire. At the moment, I don't know what to do... other than just pitch this YEP ESC and start out with a new ESC and receiver. 
