Chosen Solution
I don’t know if the TI-84 Plus calculator was dropped, but the screen is 2/3 stripes, therefore the calculator cannot be used. I tried replacing the batteries and a reset.
Hi, perhaps the ribbon cable connecting the motherboard is partially loose. Just to be sure, I’d like you to run a self test Turn the calculator on and put it on the home screenPress [mode]Press [Alpha]Press [S] (the ln key)Press [enter] four times (congratulations, you’re now in the diagnostics section!)Press [on]Now your calculator should be displaying different patterns on the screen. Press [enter] to cycle through all 45 or so patterns and contrasts, please tell me if the bottom part of your display works for any of the patterns.Press [on] multiple times to exit the diagnostics section If your screen still doesn’t work, I’d suggest looking at a topic on ribbon cable repair which you can find here. Good luck, please let me know if you have any issues or questions!
