Casio F-91W Screen Modification 

i did this in 84 nothing new here.

i love this watch so much i have 6 of them in different colors one of them is from 1994 and it still is running and original down to the bone

Fantastic. Now it is unreadable like any inverted lcd display.

I like it! It gives that 8bit-ish vibe.

My favorite Watch F91 😍😍😍

Thanks for sharing. I love seeing how people do things, the tools and techniques used, etc. Looks sharp!

This is awesome! Keep up the good work!

fantastic...you actually also saw us how to change its cell!

Special invisible display - only _The Predator_ can read it.

this is exactly what i was looking for ,thanks

I'm not dyslexic, but I read your channel name as "TechAss" 😂

Dude, It's like f91w's receiving software updates. lmao 😆

Bass pick comes in handy.

So is that a special polarizing film. Or does everyone change colours like that. I wanted to get some but I don’t want black. Really want red

yo i juts relived my childhood with this! My dad used to bring me lots of this to wear, but me as a gypsy, I always opened them up! I know how every piece of that feel. My sister gave me a huge 250$ watch to wear to my suit. but I went for a refund it cos needed the money to fund my startup! So while I was waiting in the Jewelry shop, Casio came into mind... what if...? and so I ask if I can have another watch instead and the good folk said - We can do anything, which one you want? - That one! I said launching toward the watches shelves. he kindly followed me, open the glass windows and I immediately touched a superb clasic w59 that was on sale for 17 GBP had been previously 24GBP. I looked at it, and at all his brothers, around. The fake rolex, The Sport version, the Silver one.. but since I touched this one first, I grabed it from the saleman's hand and I said: - It''s This One! Programing it first time, oh maaann it really was like driving a bike. In Casio terms, GENIAL, simplisticorum, INTUITIVE. I got at home, and I googled this watch! It is IMMENSELY popular among geeks, moreso, Bill is wearing it and for me, as an Entrepreneur, operating from a suburban shed, is extremely inspiring and I got nothing to say no more! Today I said im gonna look into the hourly alarm beeping. and I thought to myself. Maan I think mine couldn't possibly have that function, maybe the one with 4 buttons .... (because im brainwashed by media and curent business that you always have to expect less that what you pay for. But wasn't I more wrong in disconsideting this absolute HERO watch, with TIME and close proximity environment changer... IT IS THERE WORLD! I have it too! and I think is the single most powerful weapon for productivity. I finetuned syncronize it to atomic clock. Missed the sync by under 01 sec, so I had to wait one more minute, waiting with my hand on the trigger to hit that exact spot +0,1 into the future, so I always 0.1 ahead! I set the daily notification and im more ready than ever! Thank you, Casio!

@ <a href="#" class="seekto" data-time="375">6:15</a> After you peeled the film from the display, there was a point during the pre-assembly test firing that there was a segment missing from the #4 in the minutes. Was that from pulling the film too hard or was it from when you squeezed and pressed on the display? Either way, did it ever work itself out or did it get stuck like that? Also, not that it really matters because it already sucked right out of the box, but how did this process affect the backlight? It's a cool mod. I don't see where the others say it ruined the display by making it unreadable, from what I can tell, all it did was change it to negative, exactly like any other negative display watch. Also, one more question because I couldn't tell because of the camera angle, the lighting and my own semi-poor eyesight, but... When you were spinning the film around on the display before cutting it to fit, were you getting multiple patterns depending on how it was positioned, it was it just full on and full off?

Es recomendable usar guantes o de lo contrario dejarás las huellas digitales en el cristal... Saludos!

nice work

You are an artist❤❤

Looks great! Have you seen Pura custom multi color Casio mods? I wonder how’d they do that? If you know and can post a video of it that’ll be awesome:)!

Beautiful mod 💙

Wow dude that's so cool!!!

Thanks for your video greats stuff!!!

Haha I thought I broke the watch until I realized I forgot to put in the polarizer. You can't see the numbers without it!

I also have a f91w and a158w 👍

Mine with black screen, cool

is the polarizing film from the old phone anything special or will standard adhesive polarizing film work as well? do you adhere it with anything, or just place it in front of the LCD?

Casino saat güzel olmuş eline sağlık abi

awesome Work!

I wanna do this but I don't have an old phone to strip for film :( really cool

R.i.p. Nokia Hello Kasio

This I used to do when I was in 3rd standard😆😆

That's sick!

Cool looking. Im not fucking around with my f91w though.

Awesome!!

Sensacional você é um crânio...

I did this exact same thing on my yamaha fzs speedometer with duel tone, tachometer golden speedometer white, but still i dont get enough courage to unscrew my g shocks 😕😕😕, i just keep on seeing videos only, may be one day will go for the cheapest model I have DW9052 rather than my Rangeman. But thats vintage I don’t want to break it

Good work man

So I get what happened, I just have no idea hot it works. Electronics are trippy.

Ain't nobody got time for that!

Hey, what time is it? ehhhh..... ummmmm.... aaahhh..... mmmm..... aaaaa...... mmmmmmm.....

Pregunta: en el casio prot treck prw 3000 se puede cambiar la pantalla de clara a oscura, como lo muestra en el video del casio ??? Gracias

I am a fan of inverted displays) Maybe will buy 5600 and do this. But where to find different filters?

Çok yaratıcı bir zekaya sahip insan.

Is there any benefit to the mod, other than it just looking less conventional?

excellent video

Badass!

Amazing.

cool bro, how to stick the polarizer back to the lcd? no glue needed?

Your underrated

You took it from good to bad!

yo u think the f105 module would fit in the f91w? that would be a pretty dope mod.

Why don't they make them this way in the factory? Thanks.

Not bad not bad

Very cool

If i touch thar little black strup with my hands, will it stip working. Because the little black strup fell out of mine while j was trying to install a light spreader. I pucked it up and put it back in and the display was scrambled. Then i tried to clean the contacts woth alcohol and now its just dead.

Am I right in thinking I could use polarising lens from old cinema 3D glasses to achieve this?

As a mechanical watch aficionado my mind keeps howling “finger cuffs! where are your finger cuffs! Oily fingerprints everywhere, nooooooooooo!”

Nice mod!

Forgive my ignorance but why do you have to do all that? I take you can't just put some kind of coloured film on the underside of the lense?

What kind of polarising film could be used for that and where would I be able to get it?

Amazing

I love your videos 😎💕

hello I think it would be easier instead of undoing the clock just cut to size of the cover

Good work man ! I just bought a brand new one for myself and it's the best watch I ever had! but it pains me to see a nokia getting damaged . but no worries its for a fantastic mod for a fantastic watch!

I have bought Gasio made in Malaysia the difference is just G do anyone know about this watch?

what did you do to remove the adhesive from the screen? rubbing alcohol didn't get me far

I did this without taking the module apart

Mi querido amigo es usted muy creativo para hacer eso lo felicito en hora buena

Super je adore casio ♡♡♡ ORIGINAL

Hi! Love your vids. I am having difficulty changing this watch buckle and the strap retainer, I can't seem to push the spring bar to release them, and i searched EVERY where to find if anyone did it before on this watch but no one has. Do you know how to do it? If you do a search, no one has it on RU-vid thus far.

Doesn't this invalidate the warranty ?

Why do this? First, the F- 91W is currently a smaller watch. Second, the Casio in the video is more of the size of the W-217H . Third, is this a real Casio watch??

Wow❤️

I have the g shock dw5600 ms-1 which has an inverted lcd with red digits. Could I change this to non inverted without it being a bright red background then? So say black digits and subtle red background?

Oye una pregunta cómo sabes cuándo el Casio f-19w es original me puedes orientar

Nice

Reset button is long time and other fx can change any time so i think thats not original 420 watch

Brilliant watches these....cheap and reliable and still sell in the millions even after more than 25 years. I liked your mod but you broke the first minute digit, part of the '4' was missing when you were trying the polarizer screens. Did this come right after completion or was it a result of the panel being tightened up and completed within the case?

How could You fix the clock screen in case it fell and half of the numbers disappeared

Can you achieve a similar effect with polarized film?

WOW!!!

why not sale our modification

It’s so dark!

can you take the electro luminescent plates out of a casio handy enough?

<a href="#" class="seekto" data-time="135">2:15</a> Hey guys, Do any of u, know some page where I could buy this piece? The screen of my watch It's broken :/

I had a similar casio with convex (bumpy) glass... Does anyone know the model?

no way am I going to be able to do that lol

cool video people say adding mineral oil will make a watch water-proof is this true ?

Dumb question but what do you wipe the display with? I've made the mistake of using alcohol and it got it all blurry, no matter what I do some glue stains are left below the first film layer.

Nice work! By the way, I'm trying to repair a Casio F-86 that I bought in the 80's. Now I realise that the black rubber ribbon is missing. Dou you know what is it made of? thanks!

It is wizard clock

Ωραίο ήτανε απλά σε κάποιες λεπτομέρειες έκανε μακρινή την εικόνα και έχανα λίγο την επαφή σε σχέση όμως με την τεχνική άψογο και σαν αποτέλεσμα

Can I buy one with negative lcd pre installed from you

Is this possible on a dw 290?

Excelente muy cool

It changes color depending on the angle of the film?

how do I buy it????

Where did you get the tint/filter?

Where you from brother