AA Zenith n513w noise

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AA Zenith n513w noise

Post by Rickey on Wed Sep 07, 2011 7:18 pm

I get a loud noise on local station,almost blocks out the signal. I am new to repairing radios, but learning fast! I recapped the electrolytics and it got rid of the hum, it is plenty loud otherwise. How do you know if an IF transformer is of the silver mica type?
Thanks, Rick
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Re: AA Zenith n513w noise

Post by Bill Cahill on Wed Sep 07, 2011 8:28 pm

Need more information. What type of loud noise is it? Static? Buzz ?
All I F transformers have mica caps. If you mean does it have built in mica caps in I F's, what is the model, and, year of the set? Am? FM?

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Re: AA Zenith n513w noise

Post by Rickey on Thu Sep 08, 2011 6:48 am

Thanks Bill, it is a late sixties radio, AM only. The sound is a crashing sound. n513w Zenith
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Re: AA Zenith n513w noise

Post by Bill Cahill on Thu Sep 08, 2011 9:41 am

Sounds like silver mica disease in I F transformers.
You need a schematic for this set.
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Re: AA Zenith n513w noise

Post by Rickey on Thu Sep 08, 2011 3:49 pm

Thanks Bill, this will be a good set to learn on!
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Re: AA Zenith n513w noise

Post by Rickey on Sun Sep 11, 2011 8:58 pm

Took IF can apart and it has the black Siver mica problem.
I broke the red and green wires and not sure which way they go!
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Re: AA Zenith n513w noise

Post by Bill Cahill on Sun Sep 11, 2011 9:05 pm

Show me pictures of what you are talking about.
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