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Mike Hooker
Guest
have an old heathkit io-10 auto ignition oscilloscope. from the center to the right side, the image is collapsed to the center.. a trace will only go from the left to the center, then its gone. you can see the right side image is collapsed in a verticle line, as its more intense . the trace from left to center is fine. it has vacuum tubes. all the tubes have heater glow. there are 2 pair of the same tubes, i swapped the positions to see if the problem moved. it didnt. i have a schematic pdf, not sure how to attach it. id like to get it going, but if its the crt, its pointless. where to from here? thanks