06-02-2019, 08:50 PM
Progress:
Restuffed and reinstalled bakelite block (21).
Replaced resistor (16) and mica cap (15) with new parts.
Unsoldered the grounded secondary terminals of both IF transformers from their mounting brackets. I then, each IF transformer in turn, loosened the center nut and gently turned each transformer counterclockwise just a little bit, enough to ensure the formerly grounded terminals would not touch the mounting brackets.
Removed parts (23), (24), (25), (26), (27) and (28) as these parts are no longer needed in the modified circuitry.
Disconnected (33), 0.25 uF, for the time being. It will be restuffed and returned to the new circuit, connecting in the same manner as original but to two new, different value resistors.
I checked the resistance of resistor (11), which is supposed to be 51K. It measured 77K, so it will be replaced.
Oh, and this afternoon, I purchased nylon screws, nuts and spacers to isolate trimmer capacitors (19) and (22). Those will be installed later to replace the current steel screws, lockwashers and nuts, and brass spacers.
No photos for now. It's late and tomorrow starts another workweek.
Restuffed and reinstalled bakelite block (21).
Replaced resistor (16) and mica cap (15) with new parts.
Unsoldered the grounded secondary terminals of both IF transformers from their mounting brackets. I then, each IF transformer in turn, loosened the center nut and gently turned each transformer counterclockwise just a little bit, enough to ensure the formerly grounded terminals would not touch the mounting brackets.
Removed parts (23), (24), (25), (26), (27) and (28) as these parts are no longer needed in the modified circuitry.
Disconnected (33), 0.25 uF, for the time being. It will be restuffed and returned to the new circuit, connecting in the same manner as original but to two new, different value resistors.
I checked the resistance of resistor (11), which is supposed to be 51K. It measured 77K, so it will be replaced.
Oh, and this afternoon, I purchased nylon screws, nuts and spacers to isolate trimmer capacitors (19) and (22). Those will be installed later to replace the current steel screws, lockwashers and nuts, and brass spacers.
No photos for now. It's late and tomorrow starts another workweek.
--
Ron Ramirez
Ferdinand IN
