Baldwin organ amp

[MaicoDoug]

I have a connection that owns a piano & organ store, very old establishment. Finding one of these guys would be I believe your best potential reference at some point.

 

[schubert]

I finally got the output transformer off the "half amp" and tested it separately. In spite of the bird droppings on the outside, it looks OK inside, and as far as I can tell it tests OK too - 123 ohms on the primary and 0.7 ohms or so on the secondaries, and over limit readings to the core and between primary/secondary. So I'll bake this one a while and dip it in shellac as MaicoDoug suggests. On to the power transformer - if it's bad I can use the one off the Minshall amp, which escaped bird roost duty.

 

[schubert]

Zinser makes a "Amber Shellac" I get from Home Depot. I have a hoard of old "Octal" used transformers that react well every time to this dipping process. Like was already mentioned, a bakeout is recommended, then go directly into the shellac dip. The only other thing I would recommend is to somehow pull a vacuum & vent a few times to inject the liquid into the tight spots, as I have the luxury of such apparatus, however simple dipping with the end covers removed might save these beauties. Good luck, Doug

Will dipping while the transformer is still warm help draw in shellac as the unit cools (in lieu of a vacuum, that is)?