38-9 Restoration

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The Beginning
Don't Plug it In
Don't Plug It In!
The Plan

 1.  Get the Data

 2.  Block Diagram

 3.  Pre-Flight Checks

 4.  What Needs Replacement?

 5.  Ordering Parts

 6.  Install Electrolytics

 7.  First Power-On Checks

 8.  Triage Problems - more trouble!

 9.  Complete Electrical Restoration

10.  2nd Pre-Flight and Power-On, and The Last Problem

Additional Resources

 o  Antenna in the attic

 o  Shortwave Listening Guide

 o  Philco and Radio History

 o  Other Links

 

I found several "how to" websites and papers on the web.  They all said the same thing: "don't plug it in" until you've checked out a few important things first.  Old caps may have developed shorts with age, and results can be explosive.  Even worse, shorted components can fry the rectifier tube or overload and wipe out the main power transformer, rendering restoration unlikely to impossible.  Fortunately I escaped this fate only by sheer luck.

The best getting started reference I found is a reprint from Practical Electronics, "Collecting and Restoring Vintage Radios," available from the author, Paul Stenning.  His website, Vintage Radio Repair and Restoration is also chock full of great how-to help.

 

 

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Lilian Vernon
Copyright 2004 look4000@verizon.net 
Last modified: November 01, 2008