mono touch screen

hi guy's
i have a customer that has 2 seperate mono touchscreens on seperate installs (2 town houses) i installed them 2 years ago
apparently they have come hard to read . the customer has adjusted the backlit up as high as it will go but still very dark
any sugestions
tony

 

How is the ambient light. eg. Are they outdoors ?

 

Silly question, but have they/you checked the *contrast*? If it's too light (or dark) it can be very hard to read, regardless of the backlight settings.

 

they are both in kitckens with light from windows and its the same at night

the contrast is set as normal

tony

 

Have you tried adjusting the contrast though?

Sometimes electronic systems can drift in their settings over time. It may be that you just need to adjust the contrast to make it lighter.