08-20-2025, 02:04 PM
Finally able to get back to this radio. I worked through the circuit and did not see any mis-wiring issues. I rechecked voltage readings and all were the same except pin 4 on 1S5. It now was at 15 or 16 v instead of 0. Its most likely I simply measured incorrectly (perhaps wrong pin) last time since I did not really change anything. In any event the radio was still dead silent so I decided to check the speaker. It did not show an open voice coil and the transformer ohmed out OK. I put 1.5v across the voice coil by intermittently touching a lead to it...nothing. That seemed strange, I should at least hear some static since its a PM speaker. I figured, what the heck and moved to a 9v battery and a quick tap on the voice coil. I heard a loud pop...darn, did I just fry the voice coil? I went back to the 1.5v battery and lo and behold now I'm getting the static and clicking I expected. I think at the end of the day I simply had a stuck voice coil and the 9v jolt freed it up. Playing like a champ now. First thing I picked up was talk radio but then I got the Phillies vs Mariners...being a Philly phan on the west coast it was a real treat!
[Image: https://www.dropbox.com/scl/fi/l64hpty54...tbcd&raw=1]
[Image: https://www.dropbox.com/scl/fi/5mmfefhzo...bhxp&raw=1]
[Image: https://www.dropbox.com/scl/fi/l64hpty54...tbcd&raw=1]
[Image: https://www.dropbox.com/scl/fi/5mmfefhzo...bhxp&raw=1]




