Sony Jumbotron extreme teardown

CRT module from an old Jumbotron huge-screen display gets taken apart

Category:

Science & Technology

Tags:

• jumbotron
• teardown

[douro20]

There are still some Jumbotrons around. A full-sized installation needs 15-20kW of electricity and several tons of air conditioning.

[mikeselectricstuff]

@douro20 I'm sure there probably are a few, although Sony also called their LED based screens jumbotrons.

This module pulls 80-150 watts depending on brightness..

[CampKohler]

You would think that the red section of each pixel would be bigger than the other colors due to it having a lower light output.

What is the divider blade between each row for, some kind of optical reason or to prevent something thrown from hitting the CRTs?

Maybe you are trying to speed things up, but please move the camera around a little more slowly so we can see things without having to freeze the video. Thx.

[mikeselectricstuff]

@CampKohler I guess the red phosphor is more efficient. The blades are to shade from sunlight.

[xmlisnotaprotocol]

wow! why did they not use incandescent lamps?....I'm sure there is a good reason but WOW- 100s of CRTs!!

...getters and SMT in the same unit!!

great vid

I used to love finding hybrid junk - TVs with transistors and valves or valve radios with selenium rectifiers

[mikeselectricstuff]

@xmlisnotaprotocol I'd guess incandescent lamps are unsuitable due to a combination of slow reaction time, low power efficiency, heat and maybe most of all lifetime - even a smaller screen would have hundreds of thousands of pixels, so with incandescents you'd be forever replacing them.

[robot797]

can i have some of those crts?

[Maytemberr]

Great overall video. Well worth watching. I'm now a subscriber. Very Interesting and thanks for sharing.

[calamnity]

Interesting detail in the driver section. It doesn't surprise me to see a microcontroller in the video data path, but I am surprised Sony used a generic part there, given so many were needed.

I did a bit of work a few years ago developing a driver for Field Emission Displays which share many of the same issues as these: tight control of the anode voltage, using the anode current to feedback into the grid control, each pixel requiring individual calibration and a non-linear transform.

[danalee1000]

Excellent tear down, Mike! I've tried to get more info on these for years but, as you point out, information is scarce. I learned a lot; I may use a short clip from your video for my Television Technical Theory class (see my channel danalee1000 for some videos I've created for that class.) You may enjoy the "What's Inside A Plasma Screen?" one. Keep up the great work!

[Mistamudd]

Mike ! Amazing ! I have learnt more about the heritage of my industry in the past 5 mins with your video than in the whole previous decade of working with LED screens. Brilliant teardown ! You have opened my eyes as to why these things were SO expensive back in the day. Incredible engineering. HV, Vacuum, right angled inductors Corona cups - this is pure Frankenstein ! Amazing

[ChiplessStar]

Thanks for another great vid. Interesting as always.

[narcoti]

Can you enlighten me as to why there are usually blue or black marker dots on capacitors? I thought it was to mark which ones the technicians have checked.

[HDXFH]

Interesting technology