07-27-2011, 10:13 PM
Hi and welcome!!
I've got a bunch of 20's. Seems like it's the same old problems. Check field coil, audio driver transformer, primaries of the rf coils. Not uncommon to find some open windings along the way. The only one that is tough is the field coil. All the others can be repaired. Since you are rebuilding the filters make sure the input cap is the same value as original if not it will over heat the BC resistor. Rebuild the bakelite caps, check and replace as needed resistors and your be in good shape. The speaker comes apart so you may be able to fix it.
Terry
I've got a bunch of 20's. Seems like it's the same old problems. Check field coil, audio driver transformer, primaries of the rf coils. Not uncommon to find some open windings along the way. The only one that is tough is the field coil. All the others can be repaired. Since you are rebuilding the filters make sure the input cap is the same value as original if not it will over heat the BC resistor. Rebuild the bakelite caps, check and replace as needed resistors and your be in good shape. The speaker comes apart so you may be able to fix it.
Terry
When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got it!
Terry
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
