Introduction: Ti-84 Basic Disassembly

How to disassemble your Ti-84 or Ti-84 silver.

Tools needed:
1) Torex #7 (t-7) screw driver
2) Small Phillips screw driver

Step 1: Remove Battery Cover

Remove main battery cover and take out batteries.

Step 2: Remove Backup Battery Cover

Remove the back up battery cover, this will require a Phillips screw driver. After cover has been remove *take out the back up battery.*

** WARNING**
Taking out the backup battery will clear your system RAM, which means that all of your saved programs will be gone.

Step 3: Remove Rear Cover.

Use your Torx screw driver to remove the 6 screws noted below.

Step 4: Remove 4 Rear Screws.

After removing all 4 screws take a flathead screw driver or a knife and gently pry the 2 halves of the cover apart at each corner. You will hear it pop a few times, after prying a little cover should come off with ease.

Now that you have removed the rear cover you should see a foil backing over the main circuit board, to remove this you will have to first remove the 2 screws marked below.

Step 5: Remove Circuit Board.

Now you need to remove the other 4 circuit board screws.
After removing the last 4 screws the circuit board should be loose, lift up on it carefully to avoid flinging keys everywhere (sometimes the keypad will stick to the circuit board).

Step 6: Keypad

If your keypad didn't come out when you took the circuit board out it will look like this. Just take you keypad out and your Ti-84 is completely dissembled.

Step 7: Finished!

Now your ti-84 is completely dissembled. Do with it as you please, in my case my keys were sticky so I used some isopropyl alcohol to clean them off.

Comments

author
Tisila made it! (author)2014-11-28

Hey,

So my calculator started to have some problems when clicking the ON button, didn't always turn on and I would just keep pressing it until it was on.

Today was it's last breath... or was it?

Luckily I had all the tools at home so I just did it. My brother had to separate the plastics because I couldn't bare to watch all the pain. =P

Turns out that the negative contact between battery pack and the rest of the calculator was all dead as you can see in the image.

I applied some solder and it was fixed!

Thanks for the tutorial! Very helpful. =)

2014-11-28 21.25.15.jpg
author
kojakjp (author)2014-06-28

Hey,

Thanks for the tutorial. Currently, I don't have the tools to get the screws on the back off, but until I get the tools, I would like to know if the faceplate comes off. Does the grey screen frame come apart from the black area with the keys? I want to get a colorful replacement part just for the piece that surrounds the keys, so, does it come off?

author
Bobby717 (author)2012-03-27

I needed a T6 Torx to disassemble. I had a TI 84 quit working. I ordered a used one on eBay, but the case had a name on the back and showed a lot of wear. I disassembled both to put the parts of one case into the other. Works fine.

author
plumboy11 (author)2011-03-10

Does anyone know if you can buy and replace the screen on a Ti-84 +. I work for a school district and we have 120 of them 5 years old. Some of the screens have the lcd's busted by kids. Any thoughts from anyone?

author
Radiosity (author)2010-06-21

Thanks for the instructions! This helped me disassemble my TI-84 Plus Silver Edition and turn it into a Gold Edition! The outcome can be seen here.

author
naurtomoe (author)2010-05-05

 im thinking about disassembling my ti-84 so I can custom paint it a bit...will the calculator still function properly after disassembly? I disassembled my ipod mini once and it never worked again...lol

author
junits15 (author)2010-03-11

would it be possible to swap the front cover for a TI84 Plus one?  to allow for faceplate swaps.

author
MadManMike (author)2008-03-22

Okay, so funny story. A week after I posted this Instructables a classmate came up to me and asked to see my calculator, he looked at it and said "I think we switched calculators during our last quiz" I looked at the one he had and sure enough there were all the programs I thought I had lost when I removed the backup battery on the one that I took apart. I took apart a classmates calculator thinking it was my own :) lol... I still laugh about it. Any way I had to share it...

author
junits15 (author)MadManMike2010-03-11

HAHA well at leat you didnt break it!

author
sjoobbani (author)MadManMike2010-02-23

 NIICE!

author
Shoe shot (author)MadManMike2008-11-16

haha what a noob =P
nice instructable!

author
fredricksburgthethird (author)2008-03-27

would it be easy to upgrade the memory, or can you do that at all?

author

Here,Check this out
http://usb8x.sourceforge.net/
it has instructions on how to hook a flash drive to your calc

author

I am not sure about upgrading the memory... I will have to look into it.

author
jonnyboy323 (author)2008-02-18

Does anyone know how to silence a button? (When getting really into calculator games in class :-) lol)

author
LinuxH4x0r (author)jonnyboy3232008-02-19

Just use it for about a year, and then it gets silent

author
jonnyboy323 (author)LinuxH4x0r2008-02-19

I think i've gotten a years use of use out of it. lol Thanks, Jonnyboy

author
LinuxH4x0r (author)jonnyboy3232008-02-19

Well, maybe it was 2 years... (I've had my 84Silver for 3 years now)

author
me (author)2008-02-18

why would you disassemble your calculator ?

author
MadManMike (author)me2008-02-18

Do you need an excuse? Like others have said my keys were sticky after spilling a mocha on it :) But I also wanted to take a look at the mainboard, I am thinking of trying to build an external display for it. -Mike

author
me (author)MadManMike2008-02-19

well, OK I admit that there is a lot of interesting stuff in there.

author
zachninme (author)me2008-02-18

His keys were sticky, so he needed to clean them.

author
GorillazMiko (author)2008-02-18

It's not an excuse.

My Guitar Hero controller buttons were stickyish, so I opened it up to clean them.
Then, that's how I made this Instructable.