U.S. Radio model 19B

[DavGoodlin]

I have the chassis and speakers on my bench to repair. It looks like someone did a quality restoration job but it has no sound and Im having trouble tracing circuits.

Its not built like a Philco or RCA of the early 30's and has two speakers, each with center-tapped field coils. One appears to be in the "B-" circuit and puts a split potential on ground.
And the other field appears to be across the B+ supply rather than in series with it. .

The 6mH coil in the plate circuit of the 56 second detector tube was open, so I thought that was IT and got a replacement from Allied. No change - just noise as the volume control is operated. Even tube voltages are hard to measure because the reference points vary I tested the tubes before anything else, no issues there. This is a very confusing set.

HAs anyone worked on one of these ?http://www.nostalgiaair.org/pagesbym...0/M0022160.pdf