03-06-2016, 11:23 AM
Thank you, Mike.
I remeasured the voltage applied to the LED and, yes, it was only 1.5 volts.
Long story short: I did some recalculations and found that I needed a 20 ohm dropping resistor. I didn't have a 20, but I found an old carbon comp 22 ohm that had drifted up to 32 ohms. So I used it in place of the 390.
The LED is now getting 2 volts and I'm satisfied with that.
Photos:
[Image: http://www.philcoradio.com/images/phorum..._00029.jpg]
[Image: http://www.philcoradio.com/images/phorum..._00030.jpg]
[Image: http://www.philcoradio.com/images/phorum..._00031.jpg]
The dial pointer goes out when the receiver is in PHONO 1, PHONO 2 or AUX mode (but the dial remains lit).
I'll post a circuit later showing the entire LED conversion.
I remeasured the voltage applied to the LED and, yes, it was only 1.5 volts.
Long story short: I did some recalculations and found that I needed a 20 ohm dropping resistor. I didn't have a 20, but I found an old carbon comp 22 ohm that had drifted up to 32 ohms. So I used it in place of the 390.
The LED is now getting 2 volts and I'm satisfied with that.
Photos:
[Image: http://www.philcoradio.com/images/phorum..._00029.jpg]
[Image: http://www.philcoradio.com/images/phorum..._00030.jpg]
[Image: http://www.philcoradio.com/images/phorum..._00031.jpg]
The dial pointer goes out when the receiver is in PHONO 1, PHONO 2 or AUX mode (but the dial remains lit).
I'll post a circuit later showing the entire LED conversion.
--
Ron Ramirez
Ferdinand IN