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#1
01-14-2021, 02:46 PM
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From the videos you've posted, it looks like the horz sweep oscillator is what's being modulated with 60 hz. The vert osc doesn't appear affected. Watching the vids at 2X speed gives a bit clearer discernment.
Just guessing, but either a flaky ground or leakage from the heater string might be the culprit. 
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#2
07-10-2021, 02:47 PM
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Jon1967us,
I realize that this is an old thread, but I'm wondering if you ever solved your hula problem. I have a set that shows the same effect and I'm stuck. Dave
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