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Squeal is characteristic of the horizontal oscillator being off frequency (and sometimes off wave form). Here is what I would do: Get an oscilloscope connect it to the video output of a video source and get 2 synch pulses on scope screen at the same time, note the number of divisions between them, move the scope probes to the tv's H osc. and adjust for correct wave form and have the sweep waveform start and end with the same division width as measured between synch pulses.
The more I think about this, didn't the early Capehart/Farnsworth TVs use a separate HV system not based on the horizontal deflection? If so that squeal may be a HV circuit oscillator issue and not a deflection oscillator.
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03-28-2016, 01:29 PM
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