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#1
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9's are about the best early color set RCA ever made, in my opinion. Reliable, cool running and easy to work on. That chassis/schematic design is what all the rest would be based on till the end of the roundies, and that's saying something. I myself had an Atherton, it was my first vintage color set and I loved it till I had to sell it in order to make room for others.
Enjoy it! Wild guess on the issue you're having- one of the controls is dirty, have a look at the schematic diagram to see where it is: (look for the control called 'blue screen' near the picture tube) http://earlytelevision.org/pdf/RCA-CTC9-Sams-459-1.pdf Its actual location is at the rear of the set/chassis, probably under a metal panel held in by a pair of screws. If twiddling that a little bit doesn't have any effect, you likely need some more in-depth troubleshooting. For starters the power supply caps will need to be replaced, for reliability's sake. Mine worked on all original parts, but did have a slight 60hz wave in the picture. Caps fixed it. After that, you may find some worn tubes or tubes loose in their socket. Shouldn't be a tough fix, 9's are as easy to work on as they come.
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#2
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Great to hear. You may be right...before I bought it, the seller said they had a picture. I told them I would need to see it on to ensure the flyback was functional and that the crt wasn't dead. They said they were playing with the brightest and lost the picture, only a very faint raster. I replace the burnt out fuse supplying the B+ ant the set lit up bright blue. The brightness seems to work properly, but the contrast makes the screen change a bit. Maybe the contrast is dirty? What would have blown the fuse, only to work again? I know I'll have to replace the supply caps.
Scott |
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