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Update: I tinkered some more & decided to concentrate on that vert lin circuit. I ran a jumper to R127 which is connected to the wiper of that pot (the far end of the pot goes to ground). I then connected it through a resistance box to ground. At first, nothing. I then noticed while switching it around to different settings that I would get the same limited deflection. I then tried the vert lin again-and up popped the raster! Now I have the resistance box unhooked & it still works. Some sort of intermittent somewhere, maybe in the pot? It remains to be seen if it stays stable.
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Bryan
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