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Inside an LED LCD TV 

Reese
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My REAL RU-vid Channel is here: / frugalrepair Here is a better video I made explaining the parts inside of an LED TV: • How an LCD TV Works - ...
Want to know what is inside an LCD LED TV? Or want to know a little bit about what an LED backlight is on a TV? This video shows you what is inside when you take off all of the various layers.

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4 окт 2024

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Комментарии : 82   
@zzzeinabbb
@zzzeinabbb Месяц назад
Studying for comptia A+ and wanted to see this being pulled apart!
@alanmcrae8594
@alanmcrae8594 5 лет назад
Good introductory look inside an LCD LED TV, plus a little info on which layers are doing what. Thanks John!
@FrugalRepair
@FrugalRepair 4 года назад
Thanks!
@geneshaw930
@geneshaw930 5 лет назад
Very useful video. Precise and to the point .no Fuss. Thanks a ton.
@Crod716
@Crod716 16 дней назад
I sometimes take those shiny mirror like layers out from a broken TV of course and I will either draw or paint on them, do some kind of artwork and I can hang them up or sometimes I find a really pesky window that I want no curtains on but still want a softer light presents coming in from the Sun so I'll actually take one of these to my window in a nicely done manner so it looks decent you know it doesn't look rigged or jerry-rigged however you want to say it.. Also that led glass screen part, if you hold it up to like a light source and for example lightly tap it on your forehead, not hard enough to break it you'll notice that the light seems to flicker, get brighter and dimmer every time you apply pressure to the LCD screen.. But I really like drawing on those clear plastic and mirrored plastic layers for some kind of artwork
@Finestsongexplain
@Finestsongexplain 11 месяцев назад
Thank u very much brother. You are a legend
@CTGFM
@CTGFM 3 года назад
Cheers for this!
@benchurch1309
@benchurch1309 2 года назад
Can you clean the sheets and diffuser with alcohol to get rid of water damage?
@demontagemontage
@demontagemontage 8 месяцев назад
اشكرك
@lisha842
@lisha842 4 года назад
Thank you so much for this!!
@reese7305
@reese7305 4 года назад
Thanks. I hope to do a much better video explanation on my other channel soon.
@YFTOUCH
@YFTOUCH Год назад
wonderful video!
@j.lietka9406
@j.lietka9406 2 года назад
So the actual LCD screen is also made of layers of different material? How can the LCD screen have what looks like water spots? Thank you 🤓 the whole monitor screen works, but there are a couple of noticeable what looks like water as pots. Can the screen be taken apart,& the spots cleaned?
@M3M80
@M3M80 Год назад
Thanks!
@yongslcd5064
@yongslcd5064 2 года назад
nice video, thanks for sharing
@AbdullahPunctureWale-II
@AbdullahPunctureWale-II 4 года назад
Thank You very much....
@emmanuelbahati7833
@emmanuelbahati7833 6 лет назад
I opened up an LG LED screen to replace the lights but when I was reassembling it, I mistakenly disarranged the diffusing mechanism, so, I'm now confused. I don't know the correct arrangement of the these four materials; ie, the diffusing material, the two reflecting materials, and the hard plastic. Please give me some advise
@FrugalRepair
@FrugalRepair 6 лет назад
Hi, thanks for reaching out. This is my new youtube channel (ru-vid.com). This is the only video I have on this channel (and its fairly old) and I have more information about screens/ tvs on the main channel. If you subscribe there you should be getting more videos like this. To answer your question, usually starting with the backlight you have 1) light guide plate, 2) diffusion film 3) light brightness (prism films) 4) LCD (polarizers are adhered to the lcd). Does that help? One of the biggest issues that you will have is keeping dust out. After you put it back together you may see what looks like dead pixels on the screen but they are just dust/debris.
@MushroomSevla
@MushroomSevla 6 лет назад
@Emmanuel Bahati i did the same thing as you, did you manage to find out
@ERIC-65
@ERIC-65 5 лет назад
Hello, can you clean those diffusers in any kind of way?
@benchurch1309
@benchurch1309 2 года назад
There are notches on the sides that determine placement, I took mine off and lined them up and stacked them so I knew what order. I cleaned them with broad alcohol strokes to get rid of water damage and keep from leaning streak, unfortunately I cracked the main led "screen" putting it back together. It seemed like it was gonna work tho. I would align the tabs and just try a process of elimination with the order of the sheets
@nunyabiznuss7464
@nunyabiznuss7464 5 месяцев назад
Were those little gold tabs all around the screen part of the buffer circuit or just tape to secure the screen?
@kavi6437
@kavi6437 2 месяца назад
That last reflector sheet buying link pls
@PressPlayAF7
@PressPlayAF7 8 лет назад
Great! Thumbs up! 👍👍👍👍
@FrugalRepair
@FrugalRepair 4 года назад
Thanks!
@funorchardchannel
@funorchardchannel 5 месяцев назад
Sir name of that plastic diffuser which looked like glass
@yoopercolorado
@yoopercolorado Год назад
Great video! Can you please elaborate on the layers? I had to clean the sheets of some oily substance and mixed up the order they go back into the TV. HELP!
@TrashTube-rt9jw
@TrashTube-rt9jw Год назад
Ha usually we don’t put a tv back together! Just speaking as a scrapper. That oily substance is liquid crystal.
@MeLawenity
@MeLawenity 6 лет назад
I think the light guide plate is there to redirect the LED light coming from bottom of the TV towards front of the screen
@reese7305
@reese7305 6 лет назад
Yes, you are right. On an edge lit led display the light needs to be distributed evenly so that you don't notice when you are looking at the display/tv. The strip of led's are usually on the edge of the light guide plate so the light shines through the plastic. There are dots on the back side of the plate to help bounce the light toward the lcd panel.
@ahmedamber
@ahmedamber 7 лет назад
Great work my local made LED Tv Prism film is damage. I don't understand what kind of material is it. your video helps to know about Prism film.
@FrugalRepair
@FrugalRepair 4 года назад
Thanks!
@nentusz9095
@nentusz9095 2 года назад
what if you mix the light Diffusor on accident?
@santhoshprabhakar4329
@santhoshprabhakar4329 9 месяцев назад
Haii sir very good
@shrek22
@shrek22 5 лет назад
where can I buy a roll of the prism filter sheet material? its the only diffuser I have found that works well for leds while looking at a screen. thx
@MariaDelgado-ir2yu
@MariaDelgado-ir2yu 2 года назад
What is the the right name for thos plastic frames
@SuperD00D
@SuperD00D 5 лет назад
How do edge lit tv’s like samsung nu8000 or Q7F get decent black levels with the bottom edge lit “ultra slim array?” It has good black uniformity, for being edge lit, and the black levels themselves are about 8/10 if full array was 9/10 and oled was 10/10. How can they do this just lighting from the edge?
@EloteHuskers
@EloteHuskers 4 года назад
How do you Clean Dust Inside an LCD TV Screen , Without taking the TV apart ? Can I use air from a compressor , and just blow inside the air vents of the TV ??
@FrugalRepair
@FrugalRepair 4 года назад
You will need to take the TV apart in order to lift the lcd screen up enough. My trick is to get a long folded up piece of paper and lightly moisten the end and try to "grab" the dust. No, you can't use an air compressor, unfortunately.
@danieladamczyk08
@danieladamczyk08 7 лет назад
So that's why the older LCDs were so thick.
@reese7305
@reese7305 7 лет назад
Older LCD's were thicker because of the backlight. They used CCFL lights which take up more space than the leds.
@luizpedromoreira7271
@luizpedromoreira7271 10 месяцев назад
you dont know the names of the layers?
@E-BikingAdventures
@E-BikingAdventures 5 лет назад
How thick exactly is that sheet of plexiglass acrylic?
@reese7305
@reese7305 5 лет назад
I don't know exactly, maybe 1/8". It depends on the TV. It is called the light guide plate on many lcd's.
@gearoidkenny
@gearoidkenny 2 года назад
On the Samsung UE49NU71000KXxu led TV im fixing its 2.5mm thick.
@TheNoyz
@TheNoyz 8 месяцев назад
Can you use any plexi glass? As long as the same thickness?
@antonynjomo7868
@antonynjomo7868 7 лет назад
My led Tv light diffuser's has some water in em...anyway of cleaning them?The Tv is functioning normally but you can see the water marks inside.
@reese7305
@reese7305 7 лет назад
Yes, they can be cleaned but you really need to be careful not to break the panel. When you open it up you will most likely introduce dust or other particles (these are made in dust free rooms at the factory) so you need to watch for that. Those particles will make it look like you have dead pixels but it really is just the dust. If you attempt it, I'd use isopropyl alcohol to wipe away the mineral deposits left behind by the water damage.
@raenanestores4510
@raenanestores4510 6 лет назад
is the sequence of that films stanfards for all lcd tv's and monitors?
@FrugalRepair
@FrugalRepair 4 года назад
Yes, it's pretty standard
@deborshikashyap6745
@deborshikashyap6745 4 года назад
Those are just a sheet 1:47
@sand0077
@sand0077 5 лет назад
Straightforward description satisfying my curiosity, thank you! I've a Toshiba TP 48 E50 rear projection tv manufactured in 1996 that's experiencing no picture but sound is ok. This condition occurred suddenly, operating fine the day before. I've checked all settings and cable connections from the cable box to the set and are all as they should. The remote control changes volume and stations as normal as can be heard but not seen. Opening the front and back panels of the set to inspect, I'm finding three crt lamps. I'm suspecting something that controls the three lamps is affecting this as having all of them burn out at once doesn't seem plausible. Any experience with these or any ideas on what can be causing the issue?
@markolaso6634
@markolaso6634 3 года назад
What is that color white sheets?
@FrugalRepair
@FrugalRepair 3 года назад
The white sheet is to reflect the light forward through the light guide plate. There are 3 films on top. The first is a diffusion film, and the next two are prism (to focus the light forward) films. These last two are also called light brightners.
@andygilbert3463
@andygilbert3463 3 года назад
hi can i ask if i got the diffusing mechanism order wrong,would this make my tv picture have thin lines top to bottom?
@reese7305
@reese7305 3 года назад
Lines are probably from the LCD. But they should go in correct order, diffusion film closest to LED and the prism filters closer to the LCD.
@abilashchakaravarthy1950
@abilashchakaravarthy1950 8 лет назад
what if we replace the led backlight with ultraviolet led ,will it emit ultraviolet images
@reese7305
@reese7305 8 лет назад
If the ultraviolet waves got through both polarizers and the lcd you still wouldn't be able to see them because the majority of the UV light spectrum is not visible to the human eye. You might possibly be able to see a faint image on the screen due to the small visible portion of the light (why it looks violet to our eyes), where the wavelength is still long enough for our eyes to detect something. But even if you "saw" anything it would not be a UV image in the technical sense, it would be a visible light image.
@mahdirida5082
@mahdirida5082 7 лет назад
Hello, in my samsung led tv, the last white piece have a soft face and coarse face , which one is toward the panel ? thanks
@reese7305
@reese7305 7 лет назад
Were you replacing the led backlight? I'm not sure which side goes which way. Look in the corners and along the edge to see if there is a cut-out that matches to something on the metal frame. That may give you a clue. If you don't know and it is a perfect rectangle, then choose the side that looks shinier. You want the light reflected forward toward the screen.
@h3ogold478
@h3ogold478 3 года назад
Lcd or led?????
@reese7305
@reese7305 3 года назад
Well, it's really both. The LED is the backlight, the LCD is the display. With any LCD, you need a light sources to pass through it in order to see the image.
@jackiewoodard7343
@jackiewoodard7343 6 лет назад
hi there is the tv panel connected to any think thanks for your videos
@ThatGuy-nv5kz
@ThatGuy-nv5kz 7 лет назад
Is the Light Guide Plate anti-static? or Static Free?
@reese7305
@reese7305 7 лет назад
I don't know. Its a piece of plastic with a dot pattern on one side to direct the light. Why would it matter?
@ThatGuy-nv5kz
@ThatGuy-nv5kz 7 лет назад
Rhys John I just have a few that I want to do an electronic project on.
@saravanakumar2560
@saravanakumar2560 5 лет назад
Your video was not so clear , you didn't show the papers in details. I am in satisfied
@Akanshamishraaaaaa
@Akanshamishraaaaaa 2 года назад
And your English is not clear
@evilgenius747
@evilgenius747 2 года назад
Thank you for this video. May I ask what that white sheet/filter is called after you lifted the main LCD? ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-7z7lXrI1vbs.html
@reese7305
@reese7305 2 года назад
It's a prism film or sometimes called a light brightener
@evilgenius747
@evilgenius747 2 года назад
@@reese7305 Thank you so much for replying. Are they replaceable? drive.google.com/drive/folders/10mkjkiELVJIKgmg2K-M_ihszggRVahy7?usp=sharing
@t-birdgames534
@t-birdgames534 7 лет назад
Something bumped my 4k vizio now the screen looks cracked but its not someone said something about pixel bleeding. Any idea how to fix?
@reese7305
@reese7305 7 лет назад
If there is an issue with the lcd panel itself, I don't think you will be able to do anything to fix it. If I could see a photo or video of it I could tell you more specifically. Sorry for the bad news. What it could be is something called a bruise on the lcd. The polarization of the light gets messed up slightly because of some warping in the lcd panel. There is nothing that I know of that you can do to easily repair that.
@MortuusTemplum
@MortuusTemplum 5 лет назад
You are not getting any subs because you are not helpful at all. TALK!! tell us the name of the part, do something. I can take apart an LED tv and show you the parts but that is pointless.
@scottfckalltodowithu9634
@scottfckalltodowithu9634 3 года назад
lol meanwhile his other chanel has 80k+ subs. how are your 2?
@MortuusTemplum
@MortuusTemplum 3 года назад
@@scottfckalltodowithu9634 I'm not trying to get RU-vid followers dumbass. If you are trying to burn me find something actually works
@davadoff
@davadoff 2 года назад
Yar. The video is most uninformative.
@jackiewoodard7343
@jackiewoodard7343 6 лет назад
hi there is the tv panel connected to any think thanks for your videos
@jackiewoodard7343
@jackiewoodard7343 6 лет назад
hi there is the tv panel connected to any think thanks for your videos
@jackiewoodard7343
@jackiewoodard7343 6 лет назад
hi there is the tv panel connected to any think thanks for your videos
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