In the end I made an extension cable for the original yoke and put it in the jig. That wasn't easy, since the original yoke has this odd plug that looks octal but has 9 pins. Fortunately I had such a plug in my box of test jig cables, so I was able to bring it up that way. Raster came up but I had no video, so I went through all the tubes in the chassis. Found a dead 6BR8 in the tuner and a dead 6AH6 which is the 4th IF tube. New ones are on their way, hopefully once those are in we will see some color bars.
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Evolution...
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