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Originally Posted by mstaten
I have not tried to use the set yet so I cannot say whether or not it actually works.
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A set that old probably will not work. Manufactureres back then used wax paper capacitors, which do not age well. They absorb small amounts of moisture from the air, and the acids in the paper in the cap corrode the metal foil and cause the cap to be electronically leaky. This electronic leakage messes up the tube circuits to the point that they won't work anymore, and some circuits may actually draw too much current and cause damage. What would need to be done is to replace all such caps with modern equivalents before applying power. Hopefully whoever had it before didn't try to power it up within the last 20 years or so.
Even if it does work, the caps should be replaced anyway. Preventive maintenance.
If you are going to display it in the museum turned off, then the above is moot.