03-05-2020, 10:51 AM
This picture shows what I see as dirt/mould on the outside of the glass. Are you talking about something different to this?
I don't think I've come across problems with the phosphor layer breaking down on a colour TV before, but that's the only fault mechanism I can think of. Or perhaps contamination on the shadowmask, at a push. But in a working CRT that still has a good vacuum? I guess anything is possible, but it would be a new one on me. My experience is later sets though - the oldest sets I have significant experience with is the KV1820, as mentioned earlier. Probably saw about a dozen of those - I worked in a TV shop for a couple of years around the turn of the 80s/90s, and helped deliver countless new TV sets, and usually took away the old one. There were large numbers of KV1820s - they obviously sold well in the area, but then our competitor just a few doors up was a Sony centre, which might explain it
Couldn't resist a quick look on Google Maps - was slightly surprised to see both stores appear to be there. I knew the one I worked for was still going (they're a Euronics store now), but didn't think there would be room for 2 on the same street in such a tiny town (though the website of the other one is not exactly forthcoming about what they might do).
I don't think I've come across problems with the phosphor layer breaking down on a colour TV before, but that's the only fault mechanism I can think of. Or perhaps contamination on the shadowmask, at a push. But in a working CRT that still has a good vacuum? I guess anything is possible, but it would be a new one on me. My experience is later sets though - the oldest sets I have significant experience with is the KV1820, as mentioned earlier. Probably saw about a dozen of those - I worked in a TV shop for a couple of years around the turn of the 80s/90s, and helped deliver countless new TV sets, and usually took away the old one. There were large numbers of KV1820s - they obviously sold well in the area, but then our competitor just a few doors up was a Sony centre, which might explain it
Couldn't resist a quick look on Google Maps - was slightly surprised to see both stores appear to be there. I knew the one I worked for was still going (they're a Euronics store now), but didn't think there would be room for 2 on the same street in such a tiny town (though the website of the other one is not exactly forthcoming about what they might do).
