Not getting audible "beep" from ESC when turning on Tx

[grampi]

For some reason my ESC has stopped arming when I turn on my Tx. All the servos respond to the Tx inputs, but the throttle will not respond. I've disconnected all connectors and reconnected them, and made sure my battery packs a Tx were completely charged, but nothing helps. The Edge 540 only has about 45-60 minutes of total flight time since new, and the plane hasn't been crashed (yet). The ESC is the one included with the combo kit. Not knowing what conditions need to be met in order for the ESC to arm, I don't know what else to check. Could the ESC be bad?

[Hogger]

You say it has stopped arming. So I assume it was arming before you did something, or something happened. Any idea what that could be?

Just to narrow it down... you do have the ESC plugged into slot 3, or the throttle slot on your Rx?

Also, be sure to turn on you Tx, before powering up you plane.

[3DX Jim]

Something that has gotten me once....

The trim slider was not set all the way to the bottom. Throttle stick at zero, was not all the way to zero, therefore it would not arm.

Another one may be the servo is reversed? Easy enough to check.

Last, if you have digital trims, go to your programming and make sure the throttle is all the way down.