Have been trying off and on for five months to bind. Tx has supplied battery pack 100% charged for attempted binding.. RX has A123 2500 MAH batteries. Throttle is closed, model is set up according to basic set up instructions. At one time the TX had blinking red and blue, and then went to solid red. After first failed attempt, Rx was always solid red after failed first attempt. Simply does not bind. Have followed instructions to the letter.

Have basic setup on four models. The system has yet to move a servo. Servos are Hitec HS625 MG.
Need advice on what to do. Should I package it up and send to Hitec service or could it be something I am doing wrong?

Purchased it from Amazon.

Please advise:

Thanks!