First Build and Noise Problems

[Shakey]

By random is it constantly changing or if you leave the sticks alone is it always the same?

[Omnibot9]

By random is it constantly changing or if you leave the sticks alone is it always the same?

At first it was constantly changing but now the wheels just keep running, even when the transmitter is turned off. I have zero control of it. Is the red LED on the transmitter supposed to flash or should it be constant? It starts going crazy the moment I turn on the transmitter.

It is a T4EU tx and a Radiolink R7EH Rx.

I don't know much about R/C but I think either the transmitter or receiver is broken or both.