Tonight I’ve been fiddling with the receiver. I’ve determined that I’m not equipped to test this thing, and trying to figure it out without a circuit diagram or wiring schematic is proving to be difficult.
When I think I got it figured out, I would desolder a link in the circuit board and when testing for sound it would prove me wrong. I was trying to trace back through the circuit board and measuring the voltages as I went. Let’s just say it’s not making sense. I’ve tried cleaning the switches with electrical connection cleaner and deoxit d5 and it didn’t make much difference. I found service manual for other models that was manufactured by the same company at the same time, but none of them seems to match this particular receiver.
I think I need to shelve this unit and find some that works so I can test stuff and learn about the system with an actual service manual for the unit. Just to increase my knowledge of these radios. I also need to look into a signal generator and an oscilloscope to increase my ability to test and remove variables. ***** though cause I had a very nice signal generator back in the days that I ended up selling. Oh well, maybe I’ll come across someone’s old electrical testing station setup and be able to buy it all cheap to start out.