CRT Rebuilding in Poland

[AlanInSitges]

What a cool project. I wish you lots of luck with this! I think if you can get to the point of rebuilding 15GP22 and 21xxP22 tubes you would have your hands full.

[AlekZ]

These color picture tubes do not exist in Poland. Our color television started late, around 1970. The color picture tubes we use are the Soviet 59LK3C, 61LK4C. At the end of the 1970s, we started to produce the A56-701X picture tube under the RCA license.

For now, my work is focused on the regeneration of black and white picture tubes, for the earliest TV sets that were in Poland. The cathode-ray tubes used there were the Soviet 31LK2B, 35LK2B and the Polish 35MK1, 35MK21, 35MK22, AW36-80, AW43-80 and the like. For training purposes, I try on much newer 20mm cathode ray tubes, similar to the A31-310W.

[jhalphen]

Hi to all,

@AlekZ: you might be interested to see the "photo report" i did on CRT rebuilding at RACS/France circa 2012. Every major step of the process is described.
RACS re-screened & aluminized every CRT except if the customer did not want it.
In the case of some Pre-War CRTs with low EHT (5/6KV) aluminization would reduce brightness too much.

https://app.photobucket.com/u/jhalph...b-ded825d8e562

Best Regards
jhalphen
Paris/France

[AlekZ]

jhalphen

Thanks for interesting pictures!

[Josef]

Hi AlekZ,

your project sounds very interesting for German and Austrian collectors an many others too I guess
If you plan setting up a business I suggest not only to rebuild CRTs but als eye tubes. A new or like new EM34 can easily bring between 50 and 100€.
Anyway keep us informed.
If you rebuild a AW43-80 you should also be able to rebuild

https://www.radiomuseum.org/tubes/tube_mw43-64.html

or the even rarer

https://www.radiomuseum.org/tubes/tube_mw53-20.html

what should be a nice business or at least keeping our hobby alive

Good luck and all the best from Austria

[AlekZ]

Thank you for your nice post. There will be a lot of water in the Vistula before I get enough practice... . Besides, I suspect that not every repair will be successful. You have to take into account that there may be a leak in the anode lead (I've seen such cases) or the glass may break due to stress. I advise everyone not to throw away damaged picture tubes as long as the screen cone with the piece of neck is intact. There may still be a chance for such CRTs. Let's save old picture tubes!
Currently I am working on the topic of phosphor P4 (white). Perhaps I will try to make it myself. Below are some test photos of the various phosphors I have.

[Josef]

Originally Posted by AlekZ

Thank you for your nice post. There will be a lot of water in the Vistula before I get enough practice... . Besides, I suspect that not every repair will be successful. You have to take into account that there may be a leak in the anode lead (I've seen such cases) or the glass may break due to stress. I advise everyone not to throw away damaged picture tubes as long as the screen cone with the piece of neck is intact. There may still be a chance for such CRTs. Let's save old picture tubes!
Currently I am working on the topic of phosphor P4 (white). Perhaps I will try to make it myself. Below are some test photos of the various phosphors I have.

I fully agree and I'm also going to forward this thread to the Austrian collectors community. Of course I cannot promise anything but the more interested people know about you and your ambitions, the bigger the chances are being successful and save old CRTs