hey i just noticed that mine is beeping once with/all three lights coming on from a neutral position while sitting on stand, using spektrum, and i had to reprogram the esc. once i updated the firmware

**sitting on stand it will do this about once every 30 sec.

so turn it on and see if yours does this

also hooked up to the hvmaxx 4.5 motor , will try to see if it does this on the 9xl