IMHO this corrosion (Cr metal extension of the battery-compartment, and Cu on the motherboard) can be avoided by using golden contacts like in the rest of the hardware industry. steps every time you want to graph an equation on your TI-84 Plus CE or TI-84 Plus C Silver Edition, so I think we'd better start with a full example. Texas Instruments TI-84 Plus C Silver Edition PINK 2425 Graphing Calculator has all the functionality of the TI84 Plus Silver but with color and more powerful features. My Texas Instruments TI84 Plus works again for 100% I tried to clean the corroded parts, but the thin metal was corroded away, so I bent the two flexible extensions from the battery-compartment a little bit sideways, so they could touch a fresh, non-corroded part of the* + and - entry spots on the motherboard.
How do I reset my TI 84 Plus Silver Edition Press 2nd MEM (this is the second function of your + button)Select 7 (Reset)Scroll right so that ALL is normally selected.Click 1.
So the power was no longer connected to the + and - entry spots of the motherboard. Browse to the operating system file that you saved on your computer. Immediately visible was a tiny but fatal corrosion on the two little metal-covered spots on the motherboard, where the metal extensions from the battery-compartment (the backside of TI84) touch the motherboard (frontside). Once the screws are unscrewed, I used my nails to unclip the two parts. I removed the 6 torx-screws, and removed the backside (battery-compartment) from the frontside (screen and motherboard).