12-22-2009, 03:37 AM
Hi Greg and welcome!
You'll find some good reading here:
http://www.philcoradio.com/tech/plugin.htm
You might not understand it all but you'll get the idea about letting an old set run with a hum in it, and why that happens.
Your schematic will be here:
http://www.nostalgiaair.org/PagesByModel...013588.pdf
With your skills, you should be able to replace the electrolytic capacitors in the power section of the set. Then after the hum is gone, you can replace the other paper/foil caps. When that time comes, I'd replace two at a time, then test briefly to make sure that everything is still working. If you replace them all, then have a problem, you won't know which parts may have caused a problem.
After you get more experience, you can replace all in one shot.
As mentioned before, the set may 'work' but on borrowed time, and if the parts fail, they can take out a transformer or other part in a hurry. You don't want that.
Go slow, ask questions and we will be happy to help you.
As your set is in a working condition, that's a good sign that everything seems to be fine, speaker, power supply, and other circuits. Now, replacing the caps can only make it work better, safer and reliably.
Happy Holidays!
Gary,
[Image: http://www.animationplayhouse.com/christmas050.gif]
You'll find some good reading here:
http://www.philcoradio.com/tech/plugin.htm
You might not understand it all but you'll get the idea about letting an old set run with a hum in it, and why that happens.
Your schematic will be here:
http://www.nostalgiaair.org/PagesByModel...013588.pdf
With your skills, you should be able to replace the electrolytic capacitors in the power section of the set. Then after the hum is gone, you can replace the other paper/foil caps. When that time comes, I'd replace two at a time, then test briefly to make sure that everything is still working. If you replace them all, then have a problem, you won't know which parts may have caused a problem.
After you get more experience, you can replace all in one shot.
As mentioned before, the set may 'work' but on borrowed time, and if the parts fail, they can take out a transformer or other part in a hurry. You don't want that.
Go slow, ask questions and we will be happy to help you.
As your set is in a working condition, that's a good sign that everything seems to be fine, speaker, power supply, and other circuits. Now, replacing the caps can only make it work better, safer and reliably.
Happy Holidays!
Gary,
[Image: http://www.animationplayhouse.com/christmas050.gif]
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