How to fix loose CRT base - CTC11-12's
Ive got three tubes with different issues but all have a loose base. The '72 RCA colorama 21FJP22 that had its base skirt busted off goes first. Ill start by carefully extracting the solder from the pins of a donor base off a dead Sylvania 21FK and then double extra careful removing the busted-in-half base on the tube under restoration. I do not feel like re-soldering a lead busted off at the glass
Now what do I do? It needs to be non conductive, heat-resistant yet bond glass and phenolic. I saw a thread about a recipie for the crunchy caramel-colored glue-filler somewhere:scratch2: |
I used clear nail polish on a tube before.
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I use Permatex Flowable Silicone 81730 Windshield & Glass Sealer.
https://www.farmandfleet.com/product...ss-sealer.html |
Old thread with recipie here:
http://www.videokarma.org/showthread.php?t=261452 You might want to scale down the proportions somewhat! :) jr |
Thanks for the suggestions. Nail polish sounds interesting also. Non acid seems like its also called sensor-safe on the silicone stuff.
Checking on availability with a chemist now...have to scale down weights on those ingredients for the goo, Ill sure try it. |
I can understand being curious about the old glue recipe from a historical viewpoint, but why would you want to replicate the same stuff that is now falling apart and causing problems?
I'd use a modern product. Some things actually HAVE gotten better during the last 60 years :) Phil Nelson Phil's Old Radios http://antiqueradio.org/index.html |
Quote:
I plan to drill 3-4 tiny holes around the circumference to inject the stuff. |
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