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 Post subject: Zenith Royal 7000-1 recap question
PostPosted: Feb Fri 07, 2020 4:56 am 

Joined: Nov Tue 15, 2011 11:19 pm
Posts: 524
Location: Woolwich Twp (Swedesboro), NJ
I have the parts list and there is a nice PDF on how to recap. There are 11 electrolytic caps. Many are odd values like 500, 300, 20, 5uf. How critical is it to get close to these values? Can I use standard 470, 330, 22, 4.7uf, etc?

Typically in transistor radio, I would just replace non-standard with a standard value. But this is a later model from the early 1970s, and was a little surprised they had all these non-standard values.

 Post subject: Re: Zenith Royal 7000-1 recap question
PostPosted: Feb Fri 07, 2020 5:48 am 
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Joined: Jan Tue 31, 2012 1:55 am
Posts: 12012
Location: Mountains of Mourne. Ireland.
Yes, those are the correct modern-day common values to use.
All within respectable margins... :)

fyi... many electrolytic capacitors produced in the late-1960s / early-1970s had a standard tolerance of ±10% or ±20%
with some, depending on voltage rating, specifying a range of -10% to +250%

What is the percentage increase/decrease - from ? to ?


Edit: Padgett Peterson's archived web-pages.

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