Thanks for the video. I just picked up a TI-82 for my kids and didn't know before I bought it that it had this issue. I used a hot air station at 100C and a flat blade jeweler's screwdriver for pressure. Fantastic!

I used a clothes iron, lowest setting and used the very tip of the iron on the calculator. It was hot to the touch and I couldn't leave my finger on the iron for more than a second, but could touch the iron briefly. TI-83. WORKED!! THX

@watdahel

6 жыл бұрын

Improvisation at its best.

@ATL45

6 жыл бұрын

I also used a clothes iron. Lowest setting didn't work, but "Rayon" (roughly 190 C) did! Matches well with the 200 C temperature applied by the soldering iron in the video.

@Internet_user777

Жыл бұрын

Oh awesome!! Needed this tip

Thank you for the tip. I was able to fix an old TI-82 super easily. I used a temperature of 180 degrees C, maybe lower could work too, but 180 degC didn't cause any damage.

I pulled my old Ti-82 out of a drawer tonight and about 50% of my pixels were no longer working. I just fixed them all using a clothes iron. Thanks.

@watdahel

4 жыл бұрын

nice

@sealinseguro

2 жыл бұрын

Wow very smart idea to use a clothes iron, I might try that!

Glad I found this video before I used one of the other methods suggested, which was to remove the plastic ribbon tape and solder individual wires on. Your soldering iron method worked on my TI-83 & TI-83 Plus and was very easy to do. My soldering iron is temp controlled with a temperature display and I set it to minimum at 205deg C. thanks for demonstrating this method.

@watdahel

2 жыл бұрын

Thanks for watching. I made a similar video specifically for the TI-83 model. Ya soldering wires is best left for the pros. It's a lot more work.

4 years later you've helped me fix a calculator. The soldering iron was a great suggestion. Thanks!

I just dug out my Ti82 from the 90s, and had this exact problem. Dug out my soldering station and it was a 10 minute fix. Thanks!

@watdahel

2 ай бұрын

That's a quick fix. Thanks for watching.

Now I'm traveling to my home after a working week in another city. I cannot wait to rescue my TI 82 with your method!! I will share the results once I've done the fix!

@watdahel

Жыл бұрын

May you have success

This was wonderful! I was able to save my TI-82 from 1996 as a result! Still going strong!

@watdahel

2 жыл бұрын

Great!

@mcdevious2229

Жыл бұрын

I know, Jessica. Those were a lot easier to use and when you power them up, they know they're a calculator. :)

Wow, thank you. I actually went to a thrift store and also bought some TI calculators for $3 each, the TI-81 and TI-86, both have this problem. I'll be trying this method later

“While it’s true my work is based on you, I’m a Super Computer, you’re a TI-82, ooo” - Stephen Hawking

Worked perfectly, great video. Used a soldering iron set to 200C with a regular conical tip.

finding this video 4 years later when i bought a Ti 84+ silver edition on ebay for $19 and had one line. This video helped me a lot thanks

Hey man! Thank you. I lived in Italy, now I am in Brazil always caring my TI 68. For a long time ( was depressed) left my Ti 68 packed without use...A few days ago, I tried do use it again but it's display did not show all the numbers. I opened it trying to find out what was happening but no clue. Your video was the first and probably the last hope. Tried to solder the flat cable terminals as you sugested (used a 250°Celsius temp) and voilà, there it is, feito! Thank you very much, man!

@watdahel

4 жыл бұрын

good to hear it works again

Thank you for this tip. I just fixed a Casio by rubbing my finger as you did.

@watdahel

8 ай бұрын

nice

Besides the fact, that this upload is already quite old: I just took my soldering iron, spent two hours of my time and slowly, carefully pressed the thermal connectors of my TI 200 back in place. I had 4-5 horizontal lines working before, now EVERY single line is working again. Genius! Thank you so much. :-)

@watdahel

3 жыл бұрын

nice

Thank you SO much! With this I managed to fix two calculators. One I'd even thrown away already!

Watdahel: Holly Smokes, this worked! Dude, you have a mind like a mad-scientist electronics repair genius! I had this same problem with a TI-83 Plus. I was about to throw it away when I found your video and tried your soldering iron solution. And "BAM" it worked. Note: My soldering iron doesn't have temperature controls, so I had layed a couple of folds of aluminum foil over the plastic covering to keep it from melting. I then ran the iron gently over it. And to my surprise, it worked. Thanks for posting! Blessings upon you.

@watdahel

Жыл бұрын

Always happy to hear people succeed.

worked!!!! placed soldering iron onto a screwdriver until it just started to soften the plastic. Thanks!!!

@pstark4

3 жыл бұрын

now I can easily convert between polar and rectangular coordinates, and use engineering input quickly

Thanks! I repaired a Casio calculator screen with this method. Used a hoof soldering iron tip.

@watdahel

4 жыл бұрын

horses come in handy

@andonokusumajatibiaenergi

3 жыл бұрын

I have same problem can it work on fx9991ES plus?

@kaushalchhimpa1514

3 жыл бұрын

@@andonokusumajatibiaenergi Hey I also facing the same problem with my calc Casio fx 991ES plus Have you tried? this method

@watdahel

3 жыл бұрын

@@andonokusumajatibiaenergi probably will work. Try it. You got nothing to lose at this point.

i'm going to try to fix my voyage 200, having the same issue. it hasn't been switched on for over 15 years. so this trick should work. thank you for spreading the love..

@watdahel

Жыл бұрын

let us know if you fix it

Great job! Thank you for this tip. I have a few of them with the same issues. Going to do the same trick using solder iron.

@watdahel

4 жыл бұрын

Thanks for watching

Thanks! Fixed a TI-83, didn't have a temprature control on the soldering iron so just plugged it in for a few seconds and then unplugged it.

@watdahel

4 жыл бұрын

good one

Great intel and great job on the repair...I have a TI-86 which I love, but has the same pixel problem...may have a go at it or just send it to TI

Didn't have a temperature adjustable soldering iron so I just used it as soon as I plugged it in. Some solder fell off from a previous repair and freaked me the fuck out that I broke my calculator, but it ended up working great! Thanks.

Great video! Thanks for the tips!

Awesome. I LOVE my Ti-82 and don't want to have to replace it. I'll do this soon and report back..

@gilh6915

4 жыл бұрын

How did it go?

Have you ever come across ones where the ribbon able itself was apparently deteriorated? I can bend the cable on a ti86 I have without touching the connections and the lines come and go. Great vid. Never thought of using a low setting on the iron. Iusually use a heat gun or hair drier.

@watdahel

6 жыл бұрын

Unless the cable itself has a cracked crease it's usually the ends or the contacts that have come loose. So any movement of the cable with a weak or detached connection will cause those pixels to turn on and off seemingly at random times throughout the year. Even a simple change in temperature or climate can cause it. Heat and pressure is needed to reactivate the conductive adhesive. Basically, the adhesive is impregnated with microscopic metallic beads. It's the beads that complete the junction between the cable and the board. The adhesive pulls everything together.

I always liked the square-like directional pad on the TI-82 more than the TI-83 and so on. The TI-82 is an underrated graphing calculator. It can run asm programs. It's just as fast as a regular TI-83. It just has a little less RAM and lacks the asm features of the 83+.

Nice, I've got a Ti-84 with this issue, time to fix :D Thanks for sharing this!! :D

@watdahel

4 жыл бұрын

go fixing. Checkout my Ti-83 video which should be closer in layout to the TI-84.

@Kyle-ye4nj

4 жыл бұрын

@@watdahel Nice, I will, thanks!

my ti-84+ has that in the center of the screen, horizontal line, glitched, works sometimes, but that‘s just pixels from other lines

i did this with my ole fx 92 casio and it worked txh bro

Nice. I just lost segments on my TI36 II. Hope I can fix it.

Thanks. Nice video.

thanks, this is a great video.

@watdahel

4 жыл бұрын

glad you watched

Great 👍 video. What temperature set did you use?

@watdahel

4 жыл бұрын

I start with 200 C

You just saved my old girl from the bin. I almost tossed her and found this video. Worked like a charm.

@watdahel

Жыл бұрын

Good to hear

Thanks this was very helpful, now I can play hangman again!

@watdahel

Жыл бұрын

Have fun!

Sir You have done really great job, I've got the same problem with my Texsa Ti 83 . Do you think I can do it with soldering iron Antex with 18 watt. Thank you very much. indeed.

@watdahel

2 жыл бұрын

May be. A broad tip is best.

So Now I Have to order a special soldering iron? What type? Is there one you recomend?

@watdahel

4 жыл бұрын

Depends on how much you want to spend. Here's one that's similar to what I have. amzn.to/2YkuSAB

Hello do you have a video for a screen problem on a ti-84 plus?

@watdahel

6 жыл бұрын

No I don't. If your problem is similar to this TI-82 the fix would likely be similar. Location and appearance of ribbon cables will just be different.

Well done! Like.

thats like the same issue with the DMG gameboy and the gameboy pocket, i guess it's cause they use the similar screens

Hello! May I ask you for some help? I have a Texas Instrument TI-82 STATS. I works sometimes. Sometimes it just doesn't turn on, until I push hieps of differens button and squeeze it in different ways (I know, stupid), than its does turn on. I have changed the batteries. And also the display, the pixels are weird, numbers jump to wrong places and it just acts weird. I don't know what happened or if I can fix it? What do you think?

@watdahel

5 жыл бұрын

Follow what I did.

Okay, I have no soldering irom.. what else can I do?

hello what I can do if I have an horizontal pixel line missing?

@watdahel

6 жыл бұрын

May be the same .

Tried fixing a TI82 with this method. At the end the problem was worse than before...

Can you please help me how to fix fx570es plus Casio calculator

Thanks

@watdahel

4 жыл бұрын

happy pixel hunting

Hey man, can heat the Screw driver flat tip with lighter? Is it still work??

@watdahel

3 жыл бұрын

You risk risk damaging something if you don't control the heat.

I wonder if this works on any lcd's like seiko RS150 pocket dictionary?

@watdahel

7 ай бұрын

If it uses the same ribbon cables then this technique should work.

@Gankoittetsu

7 ай бұрын

@@watdahel thanks ❤️

Hi Watdahel........I have a few TI Voyage 200 graphing calculators and when I do an LCD 8 bit checkerboard check everything shows but when I do an LCD 1 bit checkerboard check the checkerboard pattern doesn't show, pls help!

@watdahel

3 жыл бұрын

Are they all showing the same thing? Upload a picture so I can see.

@stefos6431

3 жыл бұрын

@@watdahel It's hard to upload a picture but I know if the display is off, it's the ribbon cable as you mention. The resolution on the 1 bit checkerboard is non existent but the 8 bit checkerboard resolution is fine. I just reinstalled the OS for the Voyages but it did nothing to improve the issue.

@watdahel

3 жыл бұрын

I would imagine the 1 bit pattern would be very small. Very small checker pattern. Increase the display contrast and use a magnifying glass if you have to. Even if it looks like just a a solid dark screen then the display should be fine. Then there is no missing pixel which you would also see in the 8 bit pattern.

@stefos6431

3 жыл бұрын

@@watdahel I have a new Voyage 200 and the 1 bit checkerboard display shows clearly though! Ok..changed the contrast...it shows! Thank you Watdahel! :)

You can fix original Gameboy DMG screens the same way 😉

I had one vertical line of missing pixels and after trying your method I got more vertical and horizontal lines of missing pixels. Should I try again? Can you suggest me a solution or this may be the end of it?

@watdahel

4 жыл бұрын

That means the connections were barely making contact and you nodged them off. Repeat as I did and perhaps your not applying enough heat and pressure. Heat each pad and dwell for a good amount of time while applying slight pressure.

@luanalidema

4 жыл бұрын

@@watdahel I think I ruined it completely. Now I lost almost the whole screen and I believe to have left burn marks on the tape. Probably this is not recommendable for people without experience on similar issues. I have some memories as this calculator accompanied me for almost 30 years. Can it be fixed if I take it somewhere? Thanks for your reply in advance.

@watdahel

4 жыл бұрын

@@luanalidema It can be fixed but it may not be economical. You can buy used ones for really cheap though.

Good tips watdahel, got most of my verticals reconnected without burning up the ribbon. Make sure you support your right-to-repair legislation (seems like common sense but .. politics).

Can I use a heat gun for this, my soldering station doesn’t have a temperature adjustment.

@watdahel

4 жыл бұрын

I wouldn't use a heatgun. You need to apply heat as well as pressure at the same time to set the cable in place. How many watts is your iron?

@danmartin7823

4 жыл бұрын

watdahel 70 iirc

@watdahel

4 жыл бұрын

@@danmartin7823 You could try heating up the iron for a few seconds and then unplug it. Notice in the video how I touched the iron with my finger to feel the heat. You should do the same to roughly get an idea how hot your iron tip is. You should be able to touch it for half a second. Your skin should not be burned. Otherwise it's too hot.

@scriptguru8

3 жыл бұрын

I've used a hot air gun (a specialized rework station for electronics) at 200 Celsius, and put pressure with an eraser (probably you can use a piece of plastic or something like that) to fix a similar problem in a radio's LCD screen. It worked just fine. The key here is the right temperature. If it's too high you can damage the cable and/or the screen. If it's too low it won't stick well enough.

I'm a super-computer you're like a TI-8

I have a TI-81 and the screen is very dark, when I turn it off it looks like there is a dark puddle on screen, can I use this video?

@watdahel

2 жыл бұрын

I don't know what you're saying so I can't say.

@KurohaNeko

2 жыл бұрын

@@watdahel thank you for your reply, I will just open it up nonetheless

Now my calculator is unusable. I could have lived with the two missing lines. I guess a new one is cheap enough.

How can I connect with you ? My calculator display has damaged.

@watdahel

2 жыл бұрын

through here

@anuragpant2545

2 жыл бұрын

@@watdahel I have ba ii plus professional. Its screen got damaged and it is not showing the middle 3 numbers .

@anuragpant2545

2 жыл бұрын

@@watdahel Is there any way to replace its screen ?

@watdahel

2 жыл бұрын

You'll probably need to find another unit to swap the screen with. It's probably more economical to just get a new calculator. These calculators are cheap enough.

@anuragpant2545

2 жыл бұрын

@@watdahel I have BA II Plus professional .

mine has that problem and after i start using it it fixes itself

@watdahel

5 жыл бұрын

That's been my experience. It comes and goes as the season changes. The cable is loose.

@BenjitheRabbit

5 жыл бұрын

@@watdahel the thing that fixes it is having numbers displayed on the screen then after about 20 minutes its working fine

I just shake it and it works great

My ti 82 won't turn on

@hxhdfjifzirstc894

4 жыл бұрын

Put new batteries in, turn it on, and press the '2nd' and up arrow repeatedly. You need to turn the contrast up. It's on, but you can't see anything until you turn the contrast up.

0:13 WHHAAAAAATTTT? THAT IS SO CHEAP OMG. HOOOWWW

@watdahel

4 жыл бұрын

they were used. Checkout your local second hand stores and you may get lucky. I go to Goodwill and Savers.

Bought one at the re-store for $5.....screen is perfect, but is there anyway to make the upper row of digits larger? Ha.....probably a joke.

@watdahel

Жыл бұрын

I don't think so