Red light stays on

hello,

i have a chr-01 and everything was working and then the red light on the controller started to come on every so often and when its on it does not sends signals to the robot

i have looked at every thing but no luck

software:
powerpod basic code

hardware:
ssc 32
basic atom pro
bot board 2

i had to put a pull up resistor on the ps2 data line for it to work as per my other post (ps2 tutoril)

thanks in advance