DIY OLED?

[ramosss]

I just watched this video, and in it, the youtuber shows us how to make a DIY TV using old parts from TVs and projectors. Is this real? The image quality looks really good—it seems kind of fake.

[Spakes]

15 minutes ago, ramosss said:

I just watched this video, and in it, the youtuber shows us how to make a DIY TV using old parts from TVs and projectors. Is this real? The image quality looks really good—it seems kind of fake.

While it is jank, it isn't fake. DIY Perks isn't a channel that is known for faking his videos.

[mariushm]

He's removing all but one layer that makes the light uniform.  The other layers help with the color uniformity and also with the light uniformity. They wouldn't be there if they're not necessary. 

 

The projector's light is very bright and very hot, and will consume lots of power, like 150-300 watts of power, the older the projector the more power it will consume. 

You don't notice it right away, but over time (as in tens to hundreds of hours), the plastic sheets that make the light uniform will go brown/light yellow, maybe even start melting from the heat of the lamp. They're not designed for that bright lamp. 

 

Also, usually projector lamps are rated for a few thousand hours (as little as 2k hours), the light will break down in months if you use such TV for 6-8 hours a day. 

 

Here's for example a similarly old  NEC projector specs ... 180w bulb, up to 240w power consumption, 5000h endurance, up to 10k hours in eco mode (low power light) : https://www.projectorcentral.com/NEC-NP-M271X.htm#specs

 

 

 

 

[Somerandomtechyboi]

1 hour ago, mariushm said:

The projector's light is very bright and very hot, and will consume lots of power, like 150-300 watts of power, the older the projector the more power it will consume. 

You don't notice it right away, but over time (as in tens to hundreds of hours), the plastic sheets that make the light uniform will go brown/light yellow, maybe even start melting from the heat of the lamp. They're not designed for that bright lamp. 

swap bulb for led? and heat wise maybe add some sort of cooling like a fan for the diffuser?

 

now im interested in this project as id like a cheap but actually good tv and theres plenty of old panels and projectors available

[mariushm]

Bulbs are expensive .... the ones in old projectors can go up to 30-50$ a piece ... see https://www.amazon.com/Projection-Lamps/b?ie=UTF8&node=3349991

 

But you can more or less replicate it using high power leds on a heatsink ... it's the same thing that's been done by Linus in the video below... only use fewer leds.

 

 

[Blue4130]

9 hours ago, mariushm said:

He's removing all but one layer that makes the light uniform.  The other layers help with the color uniformity and also with the light uniformity. They wouldn't be there if they're not necessary. 

 

The projector's light is very bright and very hot, and will consume lots of power, like 150-300 watts of power, the older the projector the more power it will consume. 

You don't notice it right away, but over time (as in tens to hundreds of hours), the plastic sheets that make the light uniform will go brown/light yellow, maybe even start melting from the heat of the lamp. They're not designed for that bright lamp. 

 

Also, usually projector lamps are rated for a few thousand hours (as little as 2k hours), the light will break down in months if you use such TV for 6-8 hours a day. 

 

Here's for example a similarly old  NEC projector specs ... 180w bulb, up to 240w power consumption, 5000h endurance, up to 10k hours in eco mode (low power light) : https://www.projectorcentral.com/NEC-NP-M271X.htm#specs

 

 

 

 

How is heat from the projector going to discolor the diffuser? It is feet away. There will be near zero projector heat hitting the diffuser.