CRT repair ideas

[WawaPL]

Hi guys,

I am writing this, because unfortunate thing happened to me, while I was pulling out CRT (D7/16 GM) from it's socket, three pins broke off in glass. It still works with pins back in place (i think it arcs a bit but other than that all looked good), but I am seeking a repair method. As I am writing this, vacuum seems to be stable. (I have also scratched it with my dremel, but this also didn't broke it. So basically I think I got double lucky heh....) Grahame advised me to use conductive glue in order to repair broken pins, I will also buy tomorow glue for glass to fill that scratch on CRT. Do you have any idea what would do a better job than using conductive glue for those pins, or if done correctly, it will be the best way of doing it at home?

Thanks Hubert

[WawaPL]

I have remembered that I had old resin laying around (way pass expiration date-2020-but it still works, I have used it month ago in much bigger volume). Since that was such a small scratch, i just filled this in. Should be solid by tomorow.

[gregebert]

Are the filament pins intact ? I would be concerned about the conductivity of the adhesive for higher-current pins like filaments.

I have only used conductive grease on a CRT anode, not an adhesive, and it's worked quite well. The pin wasn't broken, but the connection I have is flaky without the grease. The nice thing about conductive grease is that you simply wipe it off. The stuff I used is graphite-based grease from MG Chemicals. Recently it's gotten pretty expensive, around $40 USD per tube (about the size of a roll of toothpaste). 

You should test the conductivity of the adhesive first, before attaching it to the CRT in case it's not good enough. It probably changes as the material cures. I would not want to risk further damage if you need to remove cured adhesive, so make sure it's what you need before experimenting.