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Restoring a Philco 71 Code 121-No sound
Chas
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Posts: 692
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#11

07-03-2024, 03:47 PM
That is the “burnt” look is the Celluloid decomposing.

Once the coil/form are cleaned with solvent  the condition of the coil can be examined any tiny green spots are nitric acid corrosion. The coil will have to be rewound.

Mineral spirits or alcohol.

Chas
Pliny the younger
“nihil novum nihil varium nihil quod non semel spectasse sufficiat”
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RE: Restoring a Philco 71 Code 121-No sound - by Chas - 07-03-2024, 03:47 PM



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  1. The PHILCO Phorum
  2. Philco Radio Discussions
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