Did You Know - Optical Quality Mirror inside TV's? - DYK #3

[@Makebuildmodify]

Hey! This is an older video that I never uploaded. But I think there may be some value. Hope you enjoy!

[@Makebuildmodify]

;)

[@LabRatJason]

I gutted a Sony TV just like that a few months ago, including the same LCD projection system. You missed one of the greatest pieces of engineering, the three color recombining prism in the center of all of that. When looking into the output face of the prism, you can see three directions at once. You'll see blue from the right, green from straight ahead, and red from the left. Super cool. It's job is to recombine the three separate color channels, then pass the light through the lens and prism you already showed, which projects it onto the TV surface. There was also a crazy sharpie drawing of a duck on the inside... apparently they sometimes get bored at the factory.

[@Makebuildmodify]

Yeah, I found the prism after the video. Pretty cool stuff. The duck cartoon is hilarious.

[@flojotube]

Hey guys!!! I know it’s a year later, but I just ripped down this SAME TV and I’m super interested in USING THESE PARTS.... Any clue how to get this thing to work as a projector or any other cool projects that my kids would enjoy???? THANKS

[@aot9339]

I just took apart exactly this same TV, and let me tell you, I love it. Thanks for putting this video together.

[@Makebuildmodify]

You're welcome!

[@dyingtosmile2442]

I just got an old 55 inch that i only wanted it tear it apart for the fresnal lens but now i see there so much more worth keeping! Thanks bud!

[@Makebuildmodify]

Very nice!

[@ultimatesoccershow]

TEARING MY OLD FLATSCREEN APART RIGHT NOW!! GLAD I FOUND YOUR VIDEO BUDDY!!!

[@Makebuildmodify]

Enjoy!

[@AlphaMachina]

A lot of really cool engineering went into those old rear projection TV's.

[@Makebuildmodify]

Yes, agreed. I live seeing how they put them all together.

[@josuelservin2409]

I just got one of the mirrors I was planing to make a kaleidoscope like you showed in your tutorial. Thanks for the inspiration.

[@Makebuildmodify]

You're welcome. Good luck on the kaleidoscope!

[@MakeSomething]

That was sweet! Now I want to tear apart one!!

[@Makebuildmodify]

Right!? Lots of cool stuff inside these things.

[@SlickPickle88]

A nice trapezoidal mirror with a walnut and maple frame? Perhaps a bluetooth speaker in palm? And dont act like you couldnt figure something awesome and super artistic to do with those lenses.

[@davoodehajiraj]

Professional scraper Most people just cut of the wire and take the part inside apart for copper and aluminium, but here everything can be used Well done 👍

[@Makebuildmodify]

Thanks for watching!

[@ijessup]

you really do make everything look cool

[@Makebuildmodify]

Awww shucks, you're making me blush...

[@VampireOnline]

Always wondered how these rear projection DLPs worked on the inside. Thanks for the video!

[@Makebuildmodify]

No problem, thanks for watching!

[@romanblahynka4536]

@@Makebuildmodify This one's actually a 3LCD projection. :)

[@TheRealKitWalker]

This is a gold mine for a diy-er 😍😍

[@Makebuildmodify]

Thanks for watching!

[@garagemonkeysan]

Thanks for sharing. Lots of parts one can repurpose from a projection style tv. At least they didn't end up in a landfill! : )

[@Makebuildmodify]

Yup. It's better if some of it can be used in a new project. Thanks for watching!

[@robertroot3044]

Oh boy! that's right up my alley. Tell me how hot your new solar oven gets..

[@Makebuildmodify]

Will do

[@deadtech]

Wow! a really great teardown. First surface mirrors are really expensive. Thanks!

[@Makebuildmodify]

Yeah, you can't beat free.

[@Mr.FastZombie]

This seems like a great solution for getting a first surface mirror for a projector in a small room. These TVs are easy to find cheap or even free since they are heavy and people just want to get rid of them. I was looking at new mirrors, and getting the right size new would cost up to $2000. The lens on the other hand looks like it would be fun to mess with on a camera, if I could find a way to attach it.

[@Makebuildmodify]

Yeah, it's a untapped resource. Although, there are fewer and fewer in the wild these days.

[@voltz15]

Ever wonder what it would be like if you replaced the crt projector heads with a single DLP? I'll bet 1080p would work perfectly on this thing, but then again a 4k projector would be awesome!

[@voltz15]

Yeah don't mind my post. ...I'd rather be using that projector on the wall by this point. :)

[@Makebuildmodify]

Interesting idea.

[@voltz15]

@@Makebuildmodify I know it seemed pointless of me bringing that out, but then again you had a triple crt head set which is closer to older crt based projectors of that time. Someone with a little knack and creativity may have been able to repurpose that for part of a movie room setup and still salvage the rest when I think about it.

[@ManCrafting]

Oh man. I took a screen from one and a couple of other small parts. Nothing like what you just did. Great info.

[@Makebuildmodify]

Yup, there some great stuff in some of these.

[@ihsandeeb]

Just curious, what did you do with the mirror? Once like 7 to 8 years ago there was a major flood throughout my city and other cities around me, it was only in the basement, and everyone threw away all their big screen projector televisions. Now I have abo10 or so mirrors and don't know what to do with them, any ideas??? Thanks

[@Makebuildmodify]

You could make a kaleidoscope. kzbin.info/www/bejne/oGLZpoGJfLWqr7s

[@AB3producciones]

Hey! Did you end up playing with the lens? 4:10 I have the same exact TV, working perfectly. I was wondering how would it look if you put the lens up to the camera lens mount (only the tv lens) I tried some other projector lenses, and they produce cool effects. Don't know about this one... and it would be a shame to break the TV if its working now.

[@Makebuildmodify]

I still have the lenses. I never really made anything from them yet. There pretty cool though. I'll do something with them some day.

[@SolarCookingGermany]

@@Makebuildmodify I use them to cook food 😃

[@fedepoodts5365]

Nice. What do you do with the speakers?

[@Makebuildmodify]

Lot's of things. You can salvage the magnets and wire. They can also be used as speakers in another project.

[@sunriseinspector]

Justin, I have been experimenting with kaleidoscopes after seeing your video on the 3D kaleidoscope. I have had a lot of fun, Thanks! I have gotten several rear projection TVs. There is a warning on many of them that indicates that 30,000 volts on the cathode ray tube that may be stored in a capacitor. To your knowledge is there a high voltage capacitor in the Sony that you took apart?

[@Makebuildmodify]

I'm not sure. The Sony I took apart in the video didn't have a CRT component in it. But that doesn't mean that there aren't other dangerous parts inside. I usually have the unit unplugged for a few days. Even with that precaution I treat almost everything like it's a live circuit.

[@SteelerY360Nation]

Excellent Video! People in my neighborhood are always throwing away their TVs. 📺

[@Makebuildmodify]

Exactly!

[@JedidiahShultzIrishCraftsman]

Love this!! I saw a an old school big screen in the trash last weekend and immediately thought of you😁 sadly I did not have time to pick it up lol! Great stuff Justin!!😊👊

[@Makebuildmodify]

Thanks Jed! There's plenty of old tvs to go around. I only get them when I need parts.

[@JedidiahShultzIrishCraftsman]

There definitely is! Yeah I suppose collecting them “just in case” might end up being a space hog😄

[@ryanjones7543]

Ill take the DLP chips if you dont want them. I have three of those mirrors in my living room right now lol. I am a micro electronic scrapper. I just found your channel. I plan to start doing little projects so im glad you endwd up in my sugesstions. I have a lot of those front screen lenses from flatscreens etc. I plan to cut designs and different things in those.

[@Makebuildmodify]

Yeah, there's a lot of fun project material in these. Glad you liked the video!

[@timholiner381]

Very interesting. I think that the "lens" on the screen has vertical lines that spread the light horizontally. I had a similar Sony and that's what mine did. I can't imagine what use a fresnel lens would be in that position since they are usually magnifiers or wide angle lenses. Anyway, the vertical line lens was designed to improve off-axis viewing.

[@Makebuildmodify]

Very interesting. Thanks Tim!

[@dessertman1181]

Very cool stuff

[@Makebuildmodify]

Thanks!

[@MakerInTraining]

Nice finds!!! I really like the lenses!!!

[@Makebuildmodify]

Yeah, me too!

[@Makebuildmodify]

@@s.u.7409 Not sure. I've got a couple laser projects that I'd like to build that might use them.

[@charliebaby7065]

HALALA!!! I have one of those merrors for my headboard on my bed. (dont ask y) and I used to make those pyramid kalydascopes too!!!! i like rear projections for all their wonderful wires and wire harnesses. and ... ooo combining prisms. (if you look at one, directly into its corner, and through to the furthest corner, and then look at the walls withn it, you'll see, that your looking at the interior of a 5 dimensional hypercube "shadow"

[@Makebuildmodify]

Cool! I'll have to try it.

[@fdu4.]

Thank you for the video! I need those mirrors for my kaleidoscopes! I watched it a long time ago and only now got my fist backprojection TV. But after putting it apart I had to find out that the mirror is a simple mirror, not a first surface one :/ Do you know any way to tell upfront (given the model of the TV) if it has a first surface mirror inside or a usual one? To avoid buying/transporting wrong TVs

[@Makebuildmodify]

Sorry to hear that. I don't have any way to tell if the mirror is first surface from the outside of the tv.

[@Bv791510]

Love this stuff

[@Makebuildmodify]

Thanks!

[@phil.pinsky]

Cool stuff!

[@Makebuildmodify]

Thanks Phil!

[@RoeRoe123]

DUMB QUESTION HERE 👋 does this type tv still hold a charge that can shock you like the old tube tvs?

[@Makebuildmodify]

I don't know. The tv in the video has been off for over a year so I wasn't worried.

[@AndyBirkeyMaker]

That was awesome!

[@Makebuildmodify]

You are awesome!

[@AndyBirkeyMaker]

@@Makebuildmodify NO! YOU ARE!

[@Makebuildmodify]

@Andy Birkey NO! YOU ARE!

[@dorjedriftwood2731]

Very very cool.

[@Makebuildmodify]

Thanks!

[@fortuner123]

Cool. Now you can make a wooden cabinet for a television screen!

[@Makebuildmodify]

Ha! Maybe.

[@jonathanturner8881]

those small lenses would be good in a fire starter kit for survival

[@Makebuildmodify]

Good idea.

[@jonathanturner8881]

@@Makebuildmodify thanks!

[@hitmanmb]

Could you use those lenses to make a telescope?

[@Makebuildmodify]

Not sure. Probably not big enough. But maybe.

[@Cutlerylover4life1]

I've always wanted to go to my local electronic recycling center and ask them if I can have some of the stuff to re-use. They probably get some good stuff there.

[@Makebuildmodify]

Yeah, I drool every time I drive by out electronic recycling center.

[@jessicahay9305]

I'm so jealous, we don't have an electronics recycling center. We just have a scrap yard and they won't let you take shit from there. I do pick up alot of electronics off the side of the road that people have put out for garbage pick-up. I salvage capacitors, fuses, speakers, wiring connectors, etc, then I pull the copper out for my scrap yard pile.

[@davestrain1762]

nice tear down dude... If you know where to look you can get some high quality components out of sidewalk finds! BTW, Where did you get that sweet shirt haha

[@Makebuildmodify]

Some dude gave it to me....I was wondering if you'd catch that.

[@Ggft-by3rl]

I got a 1994 rca flatscreen my optical mirror was made of foil I think ?

[@Makebuildmodify]

Interesting.

[@Zonniezonnie_A]

Now that I tossed mine that was less than a year old lol never fails. If I toss it I need it if I keep it in hoarding. Oh wait you turned it around. Mine was flat lol still I'll keeep my eye out for one like this.

[@Makebuildmodify]

Isn't that alway the way it goes? lol.

[@tykellerman6384]

Interesting stuff

[@Makebuildmodify]

Thanks Ty!

[@AndyCPugh]

Now I want to find one of those TVs.

[@Makebuildmodify]

Craigslist in the free section all the time.

[@AndyCPugh]

Not in the UK. I'm going to keep an eye out though.

[@GrahamDallas]

This is crazy, I'm sitting less than 2ft from a largely redundant 50" Sony rear-projection TV, not quite the same model but close.

[@Makebuildmodify]

Yes! There good stuff in there!

[@Ramiromasters]

So you also have this extra stuff occupying space in your house!

[@6071-p3f]

Even not knowing immediately what I might do with many of the components, it's hard to fathom it going to a landfill.

[@Makebuildmodify]

Yup, lots of good stuff.

[@APaul-se6pe]

I did my Phillip's. I will never have to buy another basic component like a inductors, capacitor, resistor, etc again. After dismantling that tv and seeing its power supply, I now know why the power bill went down. 3ft X 1ft power supply board O.o. I got same as this guy, plus a massive flyback transformer, a couple massive transformers, about ten good size transformers, just so much. It was alot easier than carrying it all to dump. A solder iron with the vacuum pump remover, and i had everything off those boards in no time. My dad claims i destroyed a $7200 tv in early 2000s time and money. Unbelievable. I dont know the brand, but my uncle has one that I swear is almost 7ft across at the base. It does 480 hdmi I believe, and works perfect today in 2021. He keeps it because it suits the man cave so well. I think it's a Toshiba, but its huge.

[@Makebuildmodify]

That's great!

[@ashrafalgballe628]

عندي تلفزيون ناشونال به اعطال خطوط الشاشه ولا اعلم كيف اقوم بصيانته هل تساعدني

[@Makebuildmodify]

أنا لست شخص إصلاح.

[@wagnerluis764]

Let's see what you will show to us...👍👍👍👍👍👍👍

[@Makebuildmodify]

;)

[@danthemakerman]

Its time to build a microscope or telescope (I don't know which would work with the lens you found) FYI, your subscribe button at the end doesn't show up.

[@Makebuildmodify]

Thanks Dan! I forgot to put them up.

[@lieblee3063]

I have a couple of big ones out here I wish I can give it away

[@Makebuildmodify]

Somebody will want them. ;)

[@superkidzach]

3:24, that is all

[@Makebuildmodify]

That is one of the best parts.

[@BruceAUlrich]

Interesting. I'm not really sure what optical quality mirrors are, and why they're valuable? Know more about them?

[@Makebuildmodify]

I used "optical quality" in the title to convey the the idea of high quality. These mirrors are first surface mirrors. That means the reflective surface is on the front of the glass instead of the rear. That way the light doesn't go through the glass while reflecting. At the end of the day it just means the color and reflectivity is much better than a typical bathroom mirror.

[@BruceAUlrich]

Cool. I had no idea of that difference. Thanks for explaining it!

[@6SugaR6MiLK6]

If you keep going into that "treasure trove" there are a bunch of glass cubes.

[@Makebuildmodify]

Yes, lots of cool stuff!

[@Sprank900]

I need a bigger place to keep lil stuff like that.

[@Makebuildmodify]

Right?!

[@Hawghuntr]

SOB !!! I just threw away 2 of them 2 months ago !!!

[@Makebuildmodify]

Oh man! That's too bad.

[@rookiewoodshop]

And to think....we throw so much of that kinda stuff away.

[@Makebuildmodify]

Right?!

[@holzwurm_hd7029]

I remember one of my friends having one of those tvs as a guinea pig enclosure (obviously stripped) But dont ask me why the hell he did that.

[@Makebuildmodify]

lol!

[@missynunyabiz1389]

That was fun! I like gutting computers. Dunno why. If i had half the tools youve got oh the things i would build! ..... daydreamin...

[@Makebuildmodify]

;)

[@markae0]

I just threw this mirror out. wtf you gonna do with it?

[@Makebuildmodify]

This: kzbin.info/www/bejne/oGLZpoGJfLWqr7s

[@prairieboyTV]

B

[@Makebuildmodify]

-ecause...

[@jraschke]

FYI its spelled Fresnel, you were dropping the S when you said it.

[@randyrodriguez4643]

The S is silent, he's pronouncing it correctly.

[@Makebuildmodify]

;)