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 Post subject: What should I replace this capacitor with?
PostPosted: Feb Wed 29, 2012 2:36 am 
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Location: Alabama
I'm new to antique radio restoration and am getting ready to go through and replace the caps. However I don't know what to do with this one. I've seen pictures of caps coupled together and am assuming that I'll need to do that but I'm not sure. Thanks for any help on what is likely a simple procedure for you guys.
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 Post subject: Re: What should I replace this capacitor with?
PostPosted: Feb Wed 29, 2012 2:43 am 
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Use two individual 22 mf caps and tie their negative leads together. Your cardboard tube is just two caps in one container. Use 150 volt rated caps.


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 Post subject: Re: What should I replace this capacitor with?
PostPosted: Feb Wed 29, 2012 2:46 am 
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Joined: Jan Thu 01, 1970 1:00 am
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Location: ID 83301
2 new caps of close value . Twist the - ground leads of both caps together and put them on the black wire . Put the 2 other wires each to the red wires in your radio . Or buy a replacement just like it from bob's capacitors .


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 Post subject: Re: What should I replace this capacitor with?
PostPosted: Feb Wed 29, 2012 4:03 am 
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Location: Santa Rosa, CA
Quote:
Use two individual 22 mf caps and tie their negative leads together. Your cardboard tube is just two caps in one container. Use 150 volt rated caps.


I would use 160 Volt caps at a minimum. 150 V caps were the norm when line voltages were closer to 110V AC. Personally, I'd use 200V. Not much more expensive.

Rich


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 Post subject: Re: What should I replace this capacitor with?
PostPosted: Feb Wed 29, 2012 4:26 am 
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Thanks for the info. Where would be a good place to buy from that sells single caps? I see that the least you can buy of a certain cap is 5 at Bobs.


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 Post subject: Re: What should I replace this capacitor with?
PostPosted: Feb Wed 29, 2012 5:24 am 
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Location: Covington, WA
Salval wrote:
Thanks for the info. Where would be a good place to buy from that sells single caps? I see that the least you can buy of a certain cap is 5 at Bobs.

Right here. Post a wanted ad in the classifieds here and you will be amazed!

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If it glows in the dark and heats up the house, it's MY kind of radio


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 Post subject: Re: What should I replace this capacitor with?
PostPosted: Feb Wed 29, 2012 6:00 am 
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chinobob wrote:
Right here. Post a wanted ad in the classifieds here and you will be amazed!

Thanks!


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 Post subject: Re: What should I replace this capacitor with?
PostPosted: Mar Thu 01, 2012 8:31 am 
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If you plan on fixing up more radios then it would be a good idea to get 5


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 Post subject: Re: What should I replace this capacitor with?
PostPosted: Mar Thu 01, 2012 6:17 pm 
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...I'm going to go out on a limb here. Given the looks of the circuitry and all, I'm going to say that filter cap is not original (it has been replaced at least once at some point). It might be a good idea to see if you can look up a schematic for that radio and see what is supposed to be in there for values, then look for equal or close values at 160V or better...it was common practice for a shop to stock filter capacitors like that one and just replace them 'on principle' if the radio had a hum (the shop I worked in always stocked a supply of 50/30µF 150V filters similar to that one and would use those to replace whatever was in the radio, regardless of original values...those dual-section filters were common in 'AA5s' and the 35Z5/35W4 rectifiers seemed to be reasonably tolerant of the differences)...


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