Quote:
Originally Posted by old_coot88
Is the vertical in the signal source specifically synced to the power line? Or is it independently generated and possibly running slightly off the power rate?
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It's coming from a Philips PM5515-TX, which allows you to set any flavor of PAL/NTSC at various frequencies and frame rates, so I suspect that it's independent of the line frequency.
Do you think it could be a beat thing with the difference between the two? I wondered if it could have something to do with having the set plugged into a variac, plugged into an isolation transformer, but I removed those from the equation and same thing. N.b., the heaving is visible on regular broadcast TV as well, well regular meaning DVB tuner --> PAL modulator.