How Do You Fix an Electric RC That Won't Move?

By Traxxas - Traxxas, CC0,

Question: How Do You Fix an Electric RC That Won't Move?

Assuming you have good batteries in the vehicle and the transmitter and you've turned on the ON switch, if the RC won't move forward or backward there are a couple of things to check and repair. But first, make sure you've checked all these other common reasons that an RC won't run.

Answer: Noise, Yes. If you can hear the RC running but it makes some kind of noise, perhaps a grinding or whirring sound when you apply throttle then you may have a slipped pinion gear.

You may be able to remesh the gears or you might need to replace the gears completely if they are stripped. On a toy RC, replacement can be tricky (and just getting to the drivetrain on some toy RCs is challenging) but for hobby-grade RCs, you can usually purchase replacement parts.

Noise, No. If your steering works but you hear no noise, you may have a loose wire. Trace all the wires to and from your motor looking for loose connections or broken wires. On a toy RC, the wires will generally run to a circuit board. It may be necessary to resolder any loose or broken connections. If there is no steering, no noise, and no movement it's possible you have a bad or worn out motor that needs replacing or the wires to and from the batteries are loose or disconnected. On a hobby-grade RC, it could be your receiver that's the culprit.

Try plugging your servos into a different receiver (with a matching frequency) to see if it works.