Not sure if this is a radio repair or components section question so apologies to the moderator if I have posted in the wrong place. Thanks.
I’m working on a Cossor 238 which is a battery set from 1937. It uses a interstage transformer to couple the detected audio to the output valve. I would call it a auto transformer as one side is connected to the -4.5 volt GB the other end to the grid of the output valve and the centre tap has the detected audio from the previous stage.
My problem is that it’s open circuit. Actually all the windings appear to be open circuit. What alternative do I have to replace this. I’m not sure where to start with the winding ratios and wonders if I could modify a output transformer from a old transistor set or something.
What are my chances of rewinding it. I have never wound a transformer but would be willing to try if there’s a chance of success.
Any ideas. I have put quite a bit of work into this set and don’t won’t to give up on it.
Thanks for any suggestions regarding Chris
https://youtu.be/7vVlvPiefpg