Quote:
Originally Posted by Jeffhs
I appreciate all the advice, but I'm not sure I want to try to replace parts under the chassis; I've only replaced a chassis component once in any of the old radios I've owned, and that was some 25 years ago or more. Besides, I don't know where I would get a 1N4007 diode, as the only Radio Shack store near here closed a few months ago and I don't know if there are others in this area. I think there is still a RS store about 20 miles from here, but since I don't drive, I don't know how I would get to it.
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Well you asked about how to take care of the radios. Replacing components comes with the territory. I personally have found selenium rectifiers to be pretty reliable, only one failure among many older units. Plus I'm fortunate to have a small crate load of NOS Seleniums if I want to do original parts replacements. But in general, for peace of mind, you should replace it with a Diode and resistor.
The 1N4007 is an extraordinarily common diode, look up on Google for an electronic components parts sales outlet near you, or order online.