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RCA D52W15B Trio of CRT Tubes Removed from a dead 52" rear projection TV. These tubes are for generating images to be projected to the main screen. The red wire on one of the tube is the high voltage from the flyback transformer. Other two has them but not visible here. From left to right is red, green, and blue. Red has a red filter in front of the tube while the green one is a cyan filter and the blue is a clear filter. Why is that? The CRTs are made by Philips and are model: Red - PLTG00RFA Green - PLTG00RRA Blue - PLTG00BMB Keywords: Miscellaneous

RCA D52W15B Trio of CRT Tubes

Removed from a dead 52" rear projection TV. These tubes are for generating images to be projected to the main screen. The red wire on one of the tube is the high voltage from the flyback transformer. Other two has them but not visible here.

From left to right is red, green, and blue. Red has a red filter in front of the tube while the green one is a cyan filter and the blue is a clear filter. Why is that?

The CRTs are made by Philips and are model:
Red - PLTG00RFA
Green - PLTG00RRA
Blue - PLTG00BMB

National_Electric_872A.JPG RCA D52W15B Trio of CRT Tubes.JPG
File information
Filename:RCA D52W15B Trio of CRT Tubes.JPG
Album name:FGS / Vaccum Tubes
Keywords:Miscellaneous
Filesize:65 KiB
Date added:Apr 22, 2010
Dimensions:640 x 480 pixels
Displayed:289 times
Color Space:sRGB
DateTime Original:2010:04:21 12:57:09
Exposure Bias:0 EV
Exposure Mode:0
Exposure Time:1/60 sec
FNumber:f/2.6
Flash:Red Eye, Compulsory Flash
Focal length:5.8 mm
ISO:80
Make:Canon
Max Aperture:f/2.6
Model:Canon PowerShot A590 IS
URL:http://www.galleryoflights.org/mb/gallery/displayimage.php?pid=1872
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Form109   [Apr 22, 2010 at 11:34 PM]
We have some of those in our Sony 65" Rear Projection TV.
FGS   [Apr 23, 2010 at 02:32 AM]
Imagine seeing a CRT in that size. Shocked Would weight a TON. How I can light these up? Anyone know? Would be awesome if I could light these up. Deep red, deep green and deep blue. Don't need to be permanent, just long enough for a pic.

Need to rewire the coils that goes on the neck of the tubes. I cut the wires too short. Embarrassed They need to work or only one point of light will be in the center of the tubes.

I am thinking of using the portable B/W TV and swapping the tubes. Would that work? Confused
GullWhiz   [Apr 23, 2010 at 02:42 AM]
ask J-frog....he knows a lot apparently....
FGS   [Apr 23, 2010 at 02:55 AM]
Will do but how? Is he a member here?
TiCoune66   [Apr 23, 2010 at 03:39 AM]
I unfortunately never saw a projection TV in action. At home we always had CRT TVs, and now LCD and plasma TVs are replacing CRTs (not at home but around).

I think the biggest CRT TV is 40", not sure. The tube of a 27" CRT TV is pretty hard to lift, I don't want to see a 40" Shocked
Form109   [Apr 23, 2010 at 04:07 AM]
im Guessing you can Light it on High Voltage.
SeanB~1   [Apr 23, 2010 at 05:45 AM]
If you power it up and do not apply a focus voltage the spot will be very large on the screen. The filters are there to correct for the phosphors not having quite the correct colour output, filtering out the spurious output colours on the 2 tubes.

Note that there is a cooling xhamber at the end of each CRT, filled with a glycol coolant. Messy if you open it and somewhat toxic if you touch or drink it ( it smells very sweet as it is a ethylene glycol based coolant).
FGS   [Apr 23, 2010 at 01:43 PM]
How toxic is that stuff? Cuz I didn't know there was anything between the filter and CRT. Made one big mess when I opened the red tube assembly. Spilled some of that on my shorts and shirt. I removed both of them quickly as I can. I cleaned up that mess quickly with lot of paper towels.
dor123   [Apr 23, 2010 at 02:04 PM]
Begining in the World cup soccer 98, here in Israel there was a massive demand for rear projection TVs, and all of these were CRT, like in this picture. Several LCD rear projection TVs were also exists, but during the first decade of 2000, they are all phased out and completely disappeared from Israel in favor of wide screen HD ready and full HD LCD and Plasma TVs. Today, there is no any signs of memory from these rear projection TVs in Israel, so the israelis are all forgoted this technology of TVs.
The only places in Israel, where the rear projection screens (CRT) remained were at arcades.
SeanB~1   [Apr 23, 2010 at 06:23 PM]
The 40" weighs over 100kg (220lb) and comes with handles attached to the set, so that you can use 4 people to move the set around. It is really heavy, but very good picture for it's time.

The coolant is as toxic as car antifreeze, but is highly concentrated, you probably saw it left a stain with a sweet smell.

Nowdays rear projection is loosing ground to large LCD and plasma, as they can be made thinner, the rear projector needs the space for an optical box and mirrors, and the screen is not as bright in showrooms. The front projection units are becoming cheaper and are now starting to move out of the role of powerpoint projection into big screen on the cheap.

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