09-03-2015, 06:28 PM
(09-03-2015, 03:55 PM)Mondial Wrote: Yes, its very difficult without a print, especially if the radio has been modified. It looks like that transformer at the bottom left in the photo is not original, so who knows if it was wired in correctly. If it was connected to the plate (pin 2) of a 226 tube, it might have been a interstage transformer driving the grid of the 71A, not an output transformer, but then why was the speaker connected to it?
What is the transformer in the upper right? is it connected to the 227 detector plate? What does the grid of the 71A (pin 3) connect to?
The one in the upper right has 2 leads so that is probably a choke?
one lead goes to the 227 pin 2
one lead goes to the 26 the 4th tube pin 3
the grid of the 71 pin 3 went to the one side oh the output that is bad and the other lead of that coil goes to chassis