[Ron Ramirez]

Bruce - The transformers do not seem to be running hot. I'll be puling it out again over the weekend and will move the 3K resistor to a more "open" part of the chassis, and will recheck the transformers. That is an excellent idea you have, to run your "warm" sets at 105-110V. In my experience, all of the old radios seem to prefer 110V: any more than that and the majority start running warmer than they probably should.

Mike (Morzh) - No, my fingers did not immediately get burned upon touching the chassis where the 3K and 2.2K are currently mounted, but I think they would have been burned had I held my hand there for more than a few seconds. My main concern is the wood cabinet. If splitting the two resistors up will help - thus dividing the heat between two places - I'm all for it. My friend likes to be able to play his radios for hours. I just want to be sure this one is safe to do that before I release it. I will probably do a test run of my own with everything in the cabinet, a good "burn in" (no pun intended) of 3-4 hours, to see how it does, once I move the 3K resistor.

Russ (Phlog) - I have not. Perhaps I should.

Mondial - Great info, thanks.

And if anyone reading this thread has a working 37-690, preferably with the original 3K/2240 ohm Candohm in place, I would like to know if the chassis gets red hot where the Candohm is mounted after the set plays for an hour or two - just to satisfy my curiosity. As Mondial and Morzh have stated, it probably does get hot. Dry, brittle wiring in the vicinity of the Candohm in this 37-690 seems to bear that out - which is why I replaced all of the speaker wires (the originals were very dry, brittle and cracking, since they all go in to the chassis just above where the Candohm was mounted).