06-04-2008, 02:56 AM
Hi,
Please verify the model of the radio as there's two schematics on Nostalgiaair.
http://www.nostalgiaair.org/PagesByModel...013634.pdf
Both diagrams show the caps mentioned but they are Id'd as C-20 A c-20b and C-20C
The negative is connected to the chassis ground.
The 30 + lead goes to pin 7 (cathode). (Count looking from the bottom of the tube from the keyway, clockwise).
The 25uf is connected to the junction of R8 and R8 also goes to one end of the output transformer.
The 20uf is connected to pin 4 of the 50L6 output tube.
So, as you say, someone worked on the set before you. Often we see added caps across the originals. Bad idea. Other times there are 'extra' caps for whatever reason. Or , they forgot to add one back in.
You are going to use new caps anyway, right? So you will have all three installed correctly.
Please verify the model of the radio as there's two schematics on Nostalgiaair.
http://www.nostalgiaair.org/PagesByModel...013634.pdf
Both diagrams show the caps mentioned but they are Id'd as C-20 A c-20b and C-20C
The negative is connected to the chassis ground.
The 30 + lead goes to pin 7 (cathode). (Count looking from the bottom of the tube from the keyway, clockwise).
The 25uf is connected to the junction of R8 and R8 also goes to one end of the output transformer.
The 20uf is connected to pin 4 of the 50L6 output tube.
So, as you say, someone worked on the set before you. Often we see added caps across the originals. Bad idea. Other times there are 'extra' caps for whatever reason. Or , they forgot to add one back in.
You are going to use new caps anyway, right? So you will have all three installed correctly.