03-30-2014, 02:04 PM
This afternoon, I decided to try an experiment on my 4400.
You may remember that the Stereo Beacon circuit had no electrolytic capacitor, as follows:
[Image: http://www.philcoradio.com/images/phorum.../led03.jpg]
However, the other Fishers I have worked on recently have Stereo Beacons with at least one electrolytic, like this:
[Image: http://www.philcoradio.com/images/phorum.../led02.jpg]
So...I added the 200 uF electrolytic. I don't know if it was never present in my 4400, or if someone removed it along the way for whatever reason...but after I added this capacitor, the Stereo Beacon LED became much more responsive and acts more like an incandescent lamp now in terms of response time - when you tune off station, it goes out like it should, with very little delay.
I am now very pleased with the LED Stereo Beacon conversion.
You may remember that the Stereo Beacon circuit had no electrolytic capacitor, as follows:
[Image: http://www.philcoradio.com/images/phorum.../led03.jpg]
However, the other Fishers I have worked on recently have Stereo Beacons with at least one electrolytic, like this:
[Image: http://www.philcoradio.com/images/phorum.../led02.jpg]
So...I added the 200 uF electrolytic. I don't know if it was never present in my 4400, or if someone removed it along the way for whatever reason...but after I added this capacitor, the Stereo Beacon LED became much more responsive and acts more like an incandescent lamp now in terms of response time - when you tune off station, it goes out like it should, with very little delay.
I am now very pleased with the LED Stereo Beacon conversion.
--
Ron Ramirez
Ferdinand IN