Episode 1571 LCD connector Be a Patron: / imsaiguy
Пікірлер: 56
@Sonnell Жыл бұрын
Very good video! I always wondered why I did not screw up these elastic connectors when I put something back together! Now I know it is made to be inserted quite randomly and it will work every time. Cool!
@HA7DN Жыл бұрын
Hm, I never seem to be able to do that, they rarely work again after reattaching...
@patrickcardon16437 ай бұрын
@@HA7DN maybe not enough pressure applied on the board on either side to make contact correctly? Or maybe the zebra connector is dirty, clean it with some IPA?
@user-kw1sx8nc6d25 күн бұрын
Very interesting, I learned something new & thanks for not padding it out to 30 mins like some do!
@craign8ca Жыл бұрын
I used to have to replace those lcd's back in my 2-way radio/pager repair days. They were a real pain. If you touched the zebra flex strip with your fingers, you might as well throw it away. The oils from your fingers can ruin them. We had to wear cotton gloves to handle them. I don't miss working on them.
@pravardhanus Жыл бұрын
Thanks for this video. I didn't know about the ITO material.
@jimomertz Жыл бұрын
Ha, I’m currently working on a project that uses zebra connector to an LCD. Kind of a PITA to work with. I had to have a board made with the edge connectors and then squish the LCD down onto the board, aligning it correctly. It was kind of fun to reverse engineer how the LCD was arranged. It used 4 Coms. LCDs are way more complicated than LEDs.
@drrenard1277 Жыл бұрын
Fun, I remember seeing those a lot tell I started taking apart Ti calculators. Those use plastic loop with carbon connectors and a silicon bar that is looped over to give some pressure into the connection. Btw ITO is really beautiful to sputter onto glass. Has a nice purple glow at the sputter source.
@quandiy5164 Жыл бұрын
Remember seeing a different kind of elastomeric connector years ago. Instead of carbon strips, it used fine gold colored wires (not sure if real gold bond wires or gold coated) otherwise it works and is used the same way.
@AdmiralSym9 ай бұрын
My Casio DBC-611 uses one of these to connect the keypad to a module. Pretty cool
@orion310591RS Жыл бұрын
Those screens are interesting things to watch under microscope. When screen stop working usually its only needed to clean glass part.
@paolomartini1503 күн бұрын
Thanks. Good video. I am having a hard time allignin mine. I had some missing segments before. Now I have nothing on the display.
@georgesampson4714 Жыл бұрын
I believe that Indium is considered a rare element and is therefore probably pretty expensive. Aluminum however is one of the most abundant elements in Nature, found in quantity in rocks, clay and such and is therefore, you could almost say, dirt cheap, therefore it would seem like they would want to use transparent Aluminum for this application. How to make it seems to be much of a mystery however I have heard there is a guy named Scotty who knows the secret but his whereabouts is a little hard to track down also.
@IMSAIGuy Жыл бұрын
I get the joke but there is Aluminium Oxynitride. unfortunately it is an insulator.
@HA7DN Жыл бұрын
I just told a few guys where to look for nuclear subs. They said that Scotty of yours told them to go there, maybe you can find them...
@BahamasRunner Жыл бұрын
I did NOT get the joke (sorry!). Care to explain? Thanks.
I remember when repairing lcd modules for avionics, we was many times replacing these zebras due to especially the pcb connectors has pressed a imprint in them. Lots of fiddling and clean fingers.
@J.F.K.O2 ай бұрын
This has always been a mystery to me how a piece of rubber could make a clock work. I never imagined it worked that way, the ones i have been working with have all been black so never noticed anything :P
@civismesecret4 ай бұрын
very well explained for noobs like me...thank you
@hamradioeconomystyle48 Жыл бұрын
I have an old Micronta (Radio Shack) multimeter. The zebra ribbon tore loose. Can you buy a new ribbon? Then , how do you connect it to the LCD display?
@dansmith237227 күн бұрын
Nice video thank you
@masomeneado2 ай бұрын
Where can I buy these zebra connectors ? I need to replace it on my Fluke Oscilloscope, I don't want to trash a $1000 dollar meter.
@ulti77854 ай бұрын
Can the screen contact be cleaned with IPA?
@quint5544 Жыл бұрын
I seem to remember a video in which you talked about the non-electrical things you use, like your pens. Am I mistaken?
@nigeleyeit Жыл бұрын
Are these LCD's are specific to the application, like the digit layout etc? Also when the LCD dies is it possible to replace with something else generic? I know the zebra strips do fail. It's hard finding any good information on these. Thanks for your videos again.
@jimomertz Жыл бұрын
They are highly specific to the application. They are broken down into com and segment lines in a matrix. The number of actual segments on the display dictates how many lines you need. If it breaks, you are SOL. You can have LCDs made for about $100, but then you have to know how the one you’re replacing was designed.
@IMSAIGuy Жыл бұрын
they are hard to drive also. strange waveforms and voltages
@nigeleyeit Жыл бұрын
@@jimomertz thanks, that sucks, I have some instrument clusters where these die, I would like some solution when they die, so I guess I'd have to go further back in the circuit to make a solution.
@TheDefpom Жыл бұрын
Thats a coincidence, I am publishing a video in the next few weeks repairing a bit of test gear with a bad display, it had an unusual type of zebra strip which I hadn't come across before, I actually did the repair on one of my live streams.
@IMSAIGuy Жыл бұрын
what was unusual
@TheDefpom Жыл бұрын
@@IMSAIGuy The Zebra strip was not enclosed in rubber, it was a bare strip.
@IMSAIGuy Жыл бұрын
oh, the stick on kind? they are a pain
@TheDefpom Жыл бұрын
@@IMSAIGuy Not stick on... it was used like the standard rubber type, but was mounted inside a slot on a plastic frame to hold it up, look out for my video about the Wavetek Model 21 in a few weeks time, you will see what I mean.
@thevoidedwarranty Жыл бұрын
I'm more intrested in the miniture vacuum tube devices on your dest ( beside the note book )
@IMSAIGuy Жыл бұрын
kzbin.info/www/bejne/Z2Svp4aMf7KJe80
@buildyear8611 ай бұрын
are there any graphic monochrome lcd displays that connect with a zebra connector?
@ashhadiqbal19411 ай бұрын
Sir please how to the fixing of e-connector , any chemical solution to use
@IMSAIGuy11 ай бұрын
I have cleaned them with alcohol
@PapasDino Жыл бұрын
Hmm, maybe we're not so far from inventing "transparent aluminum" (Star Trek IV: The Voyage Home reference!).
@IMSAIGuy Жыл бұрын
Aluminium Oxynitride
@aduedc Жыл бұрын
How do you solder it to the board and the LCD?
@stephentrier5569 Жыл бұрын
It isn't soldered. It just needs a little pressure against the contacts on both sides.
@aduedc Жыл бұрын
@@stephentrier5569 OK, how do you keep them together?
@stephentrier5569 Жыл бұрын
Either the mechanical design clamps the parts together or there's a bit of adhesive somewhere. Often the case clamps the parts together. Sometimes a bracket or bezel does the job.
@gf88888 Жыл бұрын
are the zebra rubbers held only with pressure, or is there any heating or other glue going on ?
@IMSAIGuy Жыл бұрын
just pressure
@oskimac Жыл бұрын
sorry . but as far as i know the metal thing on the back is for the reflective part. not to act as one plate of the capacitor.
@IMSAIGuy Жыл бұрын
you are right is not as simple as I stated as it was not the topic. but there is a back contact that allows an electrical field to be generated perpendicular to the face of the LCD.
@oskimac Жыл бұрын
@@IMSAIGuy totally agree. I was just complaining about the reflective layer being rendered that way. Please forgive me if I bother you with that little detail. Thank you very much for your work!
@IMSAIGuy Жыл бұрын
maybe I should do a video about displays. I worked a lot on ferroelectric liquid crystal displays. very fast switching times.
@IMSAIGuy Жыл бұрын
similar to this: www.forthdd.com/technology/flcos-operation/ the back electrode and mirror is actually an active CMOS IC.