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I would t least see if the voltages are somewhat equal. If half the voltage doubler is dead, you will have half b+.
I'm not sure how a ctc9 would behave with one side shorted, but there is a thread around here about a zenith that had a 160mf capacitor open. (it was the same basic voltage doubler circuit as an RCA.) It had a small dim raster with a bunch of 120hz in the raster. Anyway, if one diode or capacitor is open circuit, you will have half B+. Some things might partly work.
The buzzing chassis, while it might be normal, suggests probably a short somewhere. Your burned fuse wire kind of backs that up.
When one diode shorted in my ctc-15, it blew the breaker on the back of the chassis. I would check the power supply diodes for sure. I dont know, but I think its possible that if one diode or 160mf capacitor was shorted, you would have some b+ until the fuse blew. I dont think the power transformer would take this very long.
John
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