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Even with the HOT removed, the H oscillator should run close to on-frequency. Assuming you have check B+ to the circuit, all the R's and C's (including the silver micas), and have adjusted the synchroguide transformer frequency slug and the 'ringing' slug per the alignment procedure, what is left is the synchroguide transforemr itself. I don't know of any easy way to test it except substitution. But you should have no problem minding a substitute, either NOS for a used one from some chassis.
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John Folsom
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