08-05-2017, 08:41 PM
Thanks Bob! 
I won't post much on the electronic restoration - so I'll just add it here to this thread.
6.5K Resistor
Part #60 - the large wire-wound resistor - tested open.
After replacing it with the one from a parts chassis and putting in new electrolytics I tried bringing it up on a variac. No sound...
Speaker
Even though the speaker looked to be in really clean condition the output transformer tested open.
Fortunately I have a spare H-13 speaker. And it lives! Actually it works pretty well but I'll still go through and restuff all the caps.
Tuning Condenser
After making sure it was mostly working I got to the root of the original problem - the one that resulted in an extra hole. I swapped in the tuning assembly from a parts chassis. It was also the perfect time to put in new tuner rubber mounting grommets.
Before:
[Image: https://farm5.staticflickr.com/4063/3488...3fd7_z.jpg]
Note the addition of a shaft parallel to the tuning condenser axis. The original mechanism uses a pulley system to give much finer control.
After:
[Image: https://farm5.staticflickr.com/4432/3558...7fba_z.jpg]
[Image: https://farm5.staticflickr.com/4417/3558...c469_z.jpg]
[Image: https://farm5.staticflickr.com/4407/3635...bcea_z.jpg]
(Tone control is out.)
Shadow Meter
The shadow meter tests good, although it doesn't move much. I verified that it moves correctly using a 9V battery. It will likely do much better after I restuff all of the paper caps and align it.
I won't post much on the electronic restoration - so I'll just add it here to this thread.
6.5K Resistor
Part #60 - the large wire-wound resistor - tested open.
After replacing it with the one from a parts chassis and putting in new electrolytics I tried bringing it up on a variac. No sound...
Speaker
Even though the speaker looked to be in really clean condition the output transformer tested open.
Fortunately I have a spare H-13 speaker. And it lives! Actually it works pretty well but I'll still go through and restuff all the caps.
Tuning Condenser
After making sure it was mostly working I got to the root of the original problem - the one that resulted in an extra hole. I swapped in the tuning assembly from a parts chassis. It was also the perfect time to put in new tuner rubber mounting grommets.
Before:
[Image: https://farm5.staticflickr.com/4063/3488...3fd7_z.jpg]
Note the addition of a shaft parallel to the tuning condenser axis. The original mechanism uses a pulley system to give much finer control.
After:
[Image: https://farm5.staticflickr.com/4432/3558...7fba_z.jpg]
[Image: https://farm5.staticflickr.com/4417/3558...c469_z.jpg]
[Image: https://farm5.staticflickr.com/4407/3635...bcea_z.jpg]
(Tone control is out.)
Shadow Meter
The shadow meter tests good, although it doesn't move much. I verified that it moves correctly using a 9V battery. It will likely do much better after I restuff all of the paper caps and align it.
