I recently got a Magnavox CR-192 FM tuner that has been recapped, out of tolerance resistors replaced and the conversion to a 1629 eye tube done.
Something was rattling around in the discriminator transformer so I removed the shell and reattached one of the nuts holding the trimmer cap.
The primary coil had to be pushed through the side of its bracket for the shell to come off.
I noticed one wire on the primary was free. Looking at the schematic I see the winding is not tapped and has only two connections which were connected still. Where does that third wire go?
Here's a couple pictures of the transformer. The secondary which is the coil on top does have a center tap, but all three of its wires are connected.
Also I have another question.
This uses a 6X5 tube and the tube in there is not the X plate version.
Is that ok for this tuner or should I replace it with a different 6X5 or possibly go extreme and replace the power transformer with one that has a 5 volt winding and use a 5AR4? I'm not interested in using diodes and a dropping resistor to replace the tube.
Also does this tuner use any sort of de-emphasis circuit?
If not I will need to add one.
The tuner will be feeding the input of a Magnavox CR-198C console which judging by the volume control has an input impedance of 1 meg.
Service manualhttp://www.nostalgiaair.org/pagesbymode ... 010327.pdf