Quote:
Originally Posted by zeno
3) The set fell & the shadow mask broke loose. Nothing you can do
about that.
73 Zeno 
LFOD ! |
Heheh.. reminds me of a story... Probably 20 years ago, a buddy took a large Sony CRT TV on trade that had been bumped and had a shadow mask warp. Now, big Sony's were a handful to get good purity, geometry, and convergence anyway, and bumping them did no good whatsoever.
He couldn't sell it as is and wanted to take it home, so I had him go home with a compass and find the exact direction that the CRT would face in his game room. Back at his shop, we turned the TV in the same compass direction as he was going to use it at home, degaussed it, and I stuck about 20 of the "tweak" magnets that RCA used to put on their big tubes to tweak edge convergence onto that Sony tube. The trick is to not only move them in and away from the yoke, but to rotate them and watch the effect of each one. I got it pretty good, and he brought it home and used it for many years with no further trouble. As long as he didn't rotate it, it had a good picture.
John
09-08-2020, 07:22 PM
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