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Old 09-12-2023, 08:46 AM
old_coot88 old_coot88 is offline
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Did you replace the main filter caps? If that severe distortion of the raster wasn't locked to powerline freq, it would be a "crawling hourglass" caused by B+ ripple.

Last edited by old_coot88; 09-12-2023 at 08:53 AM.
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Old 09-12-2023, 08:56 AM
Chris K Chris K is offline
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Quote:
Originally Posted by old_coot88 View Post
Main filter cap(s) shot, causing that severe distortion of the raster. It would be a "crawling hourglass" if the vert sweep wasn't locked to powerline freq.
Thank you but I've changed the main filter caps...a 4 part can that I used an Adapt-A-Cap base on and 4 new Nichicon capacitors. I also changed the 2 elecrtolytics on the sweep board. The caps you see in the picture have not been changed but I don't think they have anything to do with main filtering.
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