05-26-2019, 01:42 PM
Here is the candidate for modification:
[Image: https://philcoradio.com/images/phorum/70mod/70_001.jpg]
[Image: https://philcoradio.com/images/phorum/70mod/70_002.jpg]
This is a very nice, unmolested, unusually clean chassis. It was purchased from an ARF member at Kutztown two or three years ago .
Notice that it has Sprague electrolytic cans instead of copper Mershons. It is apparent that Philco used Sprague electrolytics during some production runs of 70, 90 and late 112 sets, although the majority of Philcos made during this era have Mershons.
Under the chassis:
[Image: https://philcoradio.com/images/phorum/70mod/70_004.jpg]
I'll be removing the old dual volume control and replacing it with a 500K potentiometer. That added-on paper electrolytic will also have to go.
[Image: https://philcoradio.com/images/phorum/70mod/70_001.jpg]
[Image: https://philcoradio.com/images/phorum/70mod/70_002.jpg]
This is a very nice, unmolested, unusually clean chassis. It was purchased from an ARF member at Kutztown two or three years ago .
Notice that it has Sprague electrolytic cans instead of copper Mershons. It is apparent that Philco used Sprague electrolytics during some production runs of 70, 90 and late 112 sets, although the majority of Philcos made during this era have Mershons.
Under the chassis:
[Image: https://philcoradio.com/images/phorum/70mod/70_004.jpg]
I'll be removing the old dual volume control and replacing it with a 500K potentiometer. That added-on paper electrolytic will also have to go.
--
Ron Ramirez
Ferdinand IN
