► Bad LCD Screen Repaired - Casio Scientific Calculator

🖩 My Casio FX-115S developed some dead segments in the LCD display. This video shows how I fixed it.

► DISCLAIMER
This video is for reference/entertainment purposes only and is not intended to be advice or instruction. I am not liable for any damage or injury related to the content of this video.
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#sevenFortyOne #LCDrepair #calculator

[jayk]

Holy Crap! My TI 30Xa had something like this displayed .... didddiii instead of I was missing an attachment to my soldering iron so I carefully pressed the iron on a small wad of aluminum foil against the ribbon area. I carefully ran it across a few times. IT WORKED. I was about to chuck my 40 year old calculator before running across your video. I know it's only a $10-15 calculator, but it made my day. Thanks Dude!

[ivanivanych]

Hi! Thanks to you, i fixed a similar problem with my fx-992s. In my case, the problem was found on the LCD side: some of ribbon cable pins has lost a contact with the LCD. I fixed it using the soldering iron. At first, i fold a piece of aluminium foil to make 4 layers. Then this foil have been applied above the ribbon cable upon the area, where it's connected with the LCD. Then i heat the foil using my soldering iron (150 C degrees), and following its tip i move some silicone card to apply some pressure. My fx-992s is working again! Thanks a lot from Ukraine!

[jessicaandtrains]

Just found an old scientific calculator I had in 1998.
Like yours the screen is missing segments. Though far more than yours.I have a heat gun so I'll try a similar approach before binning it.

Thanks for making the video. It'll get a thumbs up from me. Maybe my daughter Jessica will end up using the same calculator in years to come.

[slavkog]

Thanks a lot sir for an idea!
I have tried heating and pressing but did no good to me (i guess there isn't much adhesive left on my board),
so i tried a different approach.
I took a piece of soft material and placed it on the top of that problematic spot. It works like a charm!

[aminmm]

Man you saved me ! I've had my Casio fx85WA since 2010 and it had become so dear to me... and I've just fixed it by watching your video. I couldn't be more grateful ! Big up from Algeria.

[ColinvanWaardenberg]

Just tried this with the iFixit iOpener, first time I was too quick to apply pressure, second time i had something else apply pressure and i let it sit for 10 minutes, then applied some extra pressure with my fingers afterwards and VOILA! I could really feel the contact point being hotter after letting it sit with the iOpener on it. Thx for inspiring and doing the quick show and tell!

[hwhack]

I have exact same VPAM calculator with the same issue! Thanks for the video!
I've had the calculator since 1996 and learned everything from complex numbers to trig using it.

[ricxmat]

I replace a new polarized film on a CASIO FX 880P, with almost 30 years old! but have problems with some segments not working, your video help me to fix this problem, now i have 100% beautiful screen working like new!! Thank you very much for sharing your knowledge! regards from Brazil!

[BMasse-ltiv]

I bought a second hand calculator for NZD2 yesterday to give to my student. Battery was flat. Upon opening and changing, found the characters were not displaying properly across the whole screen. I used your technic with a hair dryer and that did the trick!
Thank you so much for the tip: I will make a student happy, and I have saved e-waste!
Nga mihi nui

[jimtailor]

No fair that you diagnosed and fixed that calculator so quickly!

[warrensaunders]

Thank you so much! I had given up trying to fix my Casio FX-82 Super Fraction, but this was exactly what I needed to know!

[nrfchannel]

I've been using a similar model for 20 years. Good equipment I used it in high school and college. My son now uses it after replacing the battery

[bencaulton]

Fixed my Casio FX-83WA display using this method. Thanks for making the video.

[JohnHoranzy]

Thanks so much. I need to bring back one of my vintage collectables back to life. Never had this problem with my Slide Rules or Abacus..

[nikkowansaimon]

Thanks very much... From Valle de Chalco Solidaridad, Estado de México.

[KalleJohansson]

Worked great!! My fx100s from 1998 is revived for another 30 year's 😂😂😂 Mind you, I just replaced the original battery!!!

[ThomasSchwinge]

Great! Just fixed my ~25 years old Casio fx-85WA that way -- using my bulky hot air gun. ;-)

[watawatatag]

What is the name of the tool you used? Is it a soldering iron, but you’re only using the hot air and not making any contact with the components? If I don’t have one, would a hairdryer work?

[ahmeterhanarik]

Thanks for the video. I was trying to do the same. Good to know, I was doing it the right way. Just need more heat!

[theboyofjoyy]

great video man! did you find any way to fix the other one? god I dropped mine too