[Boatanchors] repairing speaker field coils

[Gerry Steffens]

Greetings fellow BA types,

I have a number of radios with electrodynamic speakers.  Some have small 
portions of the field coil windings loose on the outside or on edges with 
the insulating coating beginning to flake off..

Has anyone sealed these up by re-applying a coating?  If so just what is the 
coating?  A varnish, shellac or ?

While these field coils appear OK (several play at the moment), with the 
coating off, there is the potential for a short developing.  My hope is to 
preserve and fasten the loose wires without any shorts and related problems.

There are only limited areas with the coating coming off, probably from 
light physical trauma..

Cheers from Minnesota,

Gerry

Collecting & Restoring E.H. Scott,
McMurdo Silver, Hallicrafters, Zenith
Transoceanic & any other interesting
radios since the 1960s
Gerald Steffens P.E.
Oronoco, MN




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