Thanks guys,
I really appreciate it.
I have been trying to learn this kind of stuff for years and read a lot of books on it.
I just want to understand enough to diagnose my own issues.
But at 67 I guess I am a slow learner,
Little pieces like this really help.
Every little but I understand a little bit more....

I know this is a stupid question but I did try to find the answer myself before asking here.
I am recapping an old Proton Clock Radio and I am including a portion of the parts list from the Service Manual.
If you look at the Description for the Electrolytics they all have this format:

[B]Example:[/B]
Electrolytic 1uf 50v +50-10%

My question is about the +50-10% part.


Every replacement capacitor I bought on Digikey, even audio grade, had a tolerance of + or - 20%.
To be honest I didn't put much weight on the tolerance when ordering...

Thanks for the response.
I will be happy to give you some examples from a Panasonic RF-888 Radio I want to restore.
Unfortunately. we have company flying in 1 1/2 hrs.
Let me have them come and go so I can get back into it.

I will appreciate any help you guys can give.
But I will give you a quick example from a Proton Clock Radio I am about to recap.
a 0.68uf at 16v.
Yes, I know I can go higher voltage but I am going to have to really high.
I learned Formulas in College Physics for multiple Capacitors in Series and Parallel but that was...

I have a question since I am new here and I don't know if this is the right forum to ask these questions or if I am wasting your time.
I am 67 and have a lot of Radios and Electronics I grew up with which puts a lot of them at 50 years or older.
A lot of the capacitors are obviously bad but this is my problem.
An example would be the Panasonic RC-7469 Clock Radio and the Panasonic RF-888 Radio.
I have others like a Canon L-162 Nixie Desktop Calculator 110AC, etc.

I have the Service Manuals to some of these and other electronics I have and grew up with and...