Undervolted IR Receivers on Optical Keyboard

Thread Starter


Joined Dec 12, 2023
Hi, the top row of my optical keyboard doesn't register keystrokes. I measured the voltage of the IR sensors; the IR receivers on the top row are 1.27 while on the other rows it's 2.79, and all the emitters are the same at 0.05. I don't know much about electronics so any help would be appreciated, thank you!

Back of the boardIMG_0863.JPG1702402120234.jpeg