04-13-2014, 04:47 PM
Yes - the 440-T junker did have a good incandescent Stereo Beacon bulb!
It is now in the 700-T - and now the Stereo Beacon behaves as it should; going out completely when tuned off station (or when switched to TAPE HEAD, PHONO or AUX); lighting up only when tuned to am FM stereo signal in FM AUTO or FM STEREO.
It still beats me why the LED conversion did not work in this receiver, but if it must be incandescent, then it shall be incandescent.
I'm just glad the MPX decoder is working again.
I think that once I carefully and gently clean the faceplate, I can button this one up and move on to another. I may still replace the 25 uF electrolytics in the MPX decoder, but I think I'll leave the IF board alone for now. It works very well, and only has two electrolytics in it, anyway. I don't want to press my luck.
It is now in the 700-T - and now the Stereo Beacon behaves as it should; going out completely when tuned off station (or when switched to TAPE HEAD, PHONO or AUX); lighting up only when tuned to am FM stereo signal in FM AUTO or FM STEREO.
It still beats me why the LED conversion did not work in this receiver, but if it must be incandescent, then it shall be incandescent.
I'm just glad the MPX decoder is working again.
I think that once I carefully and gently clean the faceplate, I can button this one up and move on to another. I may still replace the 25 uF electrolytics in the MPX decoder, but I think I'll leave the IF board alone for now. It works very well, and only has two electrolytics in it, anyway. I don't want to press my luck.
--
Ron Ramirez
Ferdinand IN
