Quote:
Originally Posted by dieseljeep
Inquire at the TV shop in the next town, and see if they have a 12AT7 and a 6BJ6.
Replace them both, especially the 12AT7. The B+ might a little low, so a weak 12AT7 might not oscillate. Look up the 1960 Beitmans and put it in memory, for future reference. You could do a preliminary troubleshoot with just a DMM.
Also clean the band selector switch with some good contact cleaner.
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No one at that TV shop knows or cares anything about tubes or tube radios, so they wouldn't know what I was talking about if I mentioned any kind of vacuum tube. (I found this out when I asked them for help about 10 years ago with my Zenith H511-Y radio.) The shop was established in 1947, but these days all they sell (and repair under warranty) are flat screen televisions.
As to the schematic, I have one for my C845 but I cannot read it. To make matters worse, there is no one in my town who can help me with either reading the diagram or repairing the radio, even if I knew where the problem was. I would not know where to start with troubleshooting, either, even if I could; besides, I don't have the patience for troubleshooting unless it's something very simple, like an open fuse resistor or a bad tube.