How to reset the transmitter

my transmitter has been changed sothat i cant operate the robot by the Aracde-4 now i juet want to reset the transmitter who knows what should i do

It’s in the Vex manual how to reset the transmitter and how to change the modes arcade , tank etc.

If you don’t have it handy you can download the manual from this link.

The sections you want are the “control " section and appendix “E” - Transmitter Menus”
Make sure you download from the 2008 manual.

If after reading these sections you still don’t understand people can help with problems you are still having.

Give it a go because you can’t damage the transmitter by getting it wrong.
You can always do a default reset.