Hittade detta vet inte om den hjälper: Unplug the servo wire from the receiver and see if the ESC starts up normal after that. Channel 1 should be steering servo and channel 2 should be esc. Pull the channel 1 wire out of the receiver and then turn the vehicle on. If the esc starts normally then you need a new servo if the esc does the same blinking thing try disconnecting the three motor wires. And turn it on again. If this foxes it you probably shorted out the motor. I ruined my motor running 4s. But man was it fun.