FROM MANUAL:
To access the setup function of the computer:
Press and hold the joystick to the left while squeezing the right-side brake lever. Press the battery
power button to turn on the system, then continue to hold the joystick to the left and the brake lever closed for 3 seconds.
FWIW, when I follow these steps to get to the setup mode, I only see Temp and Ver and never the backlight y/n.
The backlight never goes on- does that mean it's dead because the only settings are on for 5 seconds and on permanently (meaning there's no actually setting for fully off)?
Source: Manual says:
Set backlight:
Press
the joystick left or
right to choose
the desired setting
(backlight always on
or 5 seconds), then
press the joystick
down (center)