10-01-2013, 10:59 AM
I made a lot of progress on this radio tonight. With no parts placement diagrams, no wiring diagrams (other than the schematic, which is not strictly correct for my radio) and a lot of wires ripped off of where ever they went, it was a challenge. Not the least of which was figuring out all the battery wires, which do not match the schematic.
Finally, I got power to the set, troubleshot what I could, which was the RF deck as far as the detector, then worked at figuring out the connections for the interstage transformer between the detector and 1st AF (I have a couple of Hammond replacements, still want to try to repair the originals.. have to figure out which is which first) First, the +45 source connection on the terminal strip, then the wire that ran from the same terminal strip to the plate of the detector. Insert one Hammond transformer.. the scope readout you see above is the resulting output from the detector/interstage transformer, which is also loaded with a high impedence speaker. There is audible, but low, audio coming out of the speaker as well. Next, work on the 1st AF stage.
