ESC keeps beeping no matter what i do !

hi, i have a quadcopter with apm2.6  , the transmitter and receiver are both turnigy 9x v2 (same pack) , and the esc's are turnigy30A.

i have all my ESC's calibrated and flew my quad before. but today, only the ESC connected to ch3 (throttle) didnt work, it keeps beeping whether throttle is up or down on the tx.

all the other esc's act normally except for #3.

beeping sequence is (beep beep...beep beep...beep beep...).

i switched the wires connected to the apm between esc 3 and esc 4 , and esc 3 kept beeping and esc4 was working normally , so i figured its either the esc or the motor.

but now just stuck here.

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  • I believe that a continuous beeping like you have is an indication of an ESC problem. One of mine did the same thing, and I had to replace it to correct the problem.

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