09-04-2015, 09:47 AM
(09-03-2015, 08:53 PM)Mondial Wrote:My apologies MondialQuote:The output has 4 leads in the picture on the bottom side of the coil on the one lead goes to the middle yellow resistor on the end which is tied to (chassis) ground. the other lead goes to the plate of the 71
Quote: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
Now you have me really confused. First you said the output transformer was connected to the plate of the 71A, but your last post says its connected to the grid?
If the transformer is really connected to the grid and ground, it is an interstage transformer and not an output. This makes sense because you said the other winding connected to the plate of the 226, which is probably the first audio amp.
This radio may never have had an output transformer at all. Sometimes the high impedance speaker was driven directly from the plate of the 71A, with no transformer.
At this point, I really think you need more info on the radio from someone who has one, or an actual schematic. It does not help that someone replaced the transformer and possibly wired in in wrong. The only other alternative is to trace out all the wiring yourself and draw up an accurate schematic.
Let me try this
Coil 1- One lead goes to the 71 grid pin 3 the other goes to the chassis
Coil 2 one lead goes to the 226 pin 2 the other goes to the speaker
Does this layout make it an interstage transformer?