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Antique Radio Technical Forum
Moisture in Radio

Posted by Lawrence Goldy on 04/19/2009 12:20

I have a Zenith 6D512 that I painted the chassis and changed out the wiring due to the rotting insulation.

The I.F. transformers were removed and existing wires covered with heat shrink tubing.

While applying heat to shrink the tubing I noticed one of the wires began to bulge as hot gasses were trapped when the tubing began to shrink so I changed my strategy and focused on one end and worked towards the opposite end with out problems.

When applying heat to the wires wax on the coils lightly melted and cooled down with bubbles breaking the surface like hot gasses escaping.

My question is how does someone go about safely drying out a chassis that is completely reassembled with new resistors and capacitors.

An isolation transformer and veriac were used to bring the radio up slowly and to my surprise it seems to work on the broadcast band as I can tune in several stations.


Moisture in Radio 
Lawrence Goldy 04/19/2009 12:20 
Warren 04/19/2009 12:52 
Lewis L 04/19/2009 13:04 

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