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is that just glass without any baked on coating,because if is just pure glass has anyone tryed soaking the face of the tube in pure mineral spirits for day or so that pva compond looks a form of r v t silicone and mineral spirits will dissolve silicone nicely, doug on his video said he used carb&choke cleaner to clean the residue off the picture tube.but if there is any other coating on that glass the solvent will make it cloudy. but if that will work temp. is no longer a issue. anyone got a old bad tube to experiment with ha ha
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