TI-83 Missing Pixels Line - How To Fix?

It's hard to believe I've had my TI-83 calculator for about 25 years and I still use it quite often. It has been super reliable until today when I turned it on, I noticed it was missing a vertical line of pixels. It was low on battery so I figured that might be the issue.

I opened up the battery case and noticed there was some corrosion on one of the batteries. I took them out and cleaned it up as well as I could. Then I put in the new batteries. Unfortunately it still had the missing line.

So I did some research and found a video here showing how to do a display test on the calculator.

Here are the basic steps:

Press MODE

Press ALPHA

Press S

Press Enter

Press ON

Press Enter to cycle through the screen tests. 

Press ON a few more times to get back to the home screen.

 

I'm not sure if this will work for all screen issues, but somehow it worked for me and it fixed the missing line of pixels.

 

There are some tutorials out there instructing to open up the calculator to fix the internal components, but they looks pretty technical. If you are having screen issues, I recommend trying this method first to see if it fixes the problem.