Tag Archives: Funnel Glass

Some information on CRT’s- Honest and Accurate Unlike Much of What You Read on the Topic Elsewhere.

As color TV set prices dropped, those tubes made roughly after 1973 no longer had a “frit” and were no longer garage rebuildable. My dad actually worked with a fellow who did rebuild the CRT’s in his garage, and I met him and talked with him about the process back in those days. With the introduction of the Sony “Trinitron”, which actually still had the 3 electron guns, but had an assembly that worked slightly different as a couple of tube elements that had been 3 seperate items each in RCA, GE and others CRT’s and remained so, were now handled by one element instead of three in the Sony products. These Trinitrons were not garage rebuildable. and their introduction also corresponded to the demise of many neighbornood TV shops as sets got cheaper and repair parts got more expensive and labor became a major factor of a repair cost. Color CRT’s were rebuildable even with fused glass parts or burned phosphor coatings, but it required the facilities of on par with a factory to do so- which remained possible into the early part of this century- and they were not cheap. Continue reading

Advertisements
Posted in Cathode Ray Tube, CRT, Frit, Homebrew, Project, Recycling, Uncategorized | Tagged , , , , , , , , , ,