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mark K
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Post subject: Zenith Have no Am/Fm where should I start?  Posted: Feb Mon 05, 2018 7:16 pm |
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Joined: Apr Tue 07, 2015 2:36 am
Posts: 259
Location: Waterford MI
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Thanks for looking at my post!
I just recapped this zenith I do have output in the amplifier its working good. But I have 0-Zero Am or Fm reception where would you start schematic Below,
Last edited by mark K on Feb Mon 05, 2018 10:24 pm, edited 1 time in total.
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mark K
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Post subject: Re: Zenith Have no Am/Fm where should I start? Posted: Feb Mon 05, 2018 8:59 pm |
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Joined: Apr Tue 07, 2015 2:36 am
Posts: 259
Location: Waterford MI
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doing some voltage testing
Q201 1st am-fm Amp
C=12v
B & E = I have NO volts
Where does the voltage come in from here?
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Norm Leal
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Post subject: Re: Zenith Have no Am/Fm where should I start? Posted: Feb Mon 05, 2018 9:23 pm |
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 37694
Location: Livermore, CA
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Hi Mark
Voltages start on page two, toward the right. Squares numbered 1 through 5, marked source. Measure there and work back through resistors and coils.
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Norm
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mark K
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Post subject: Re: Zenith Have no Am/Fm where should I start? Posted: Feb Mon 05, 2018 10:16 pm |
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Joined: Apr Tue 07, 2015 2:36 am
Posts: 259
Location: Waterford MI
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Thanks Norm Found it to much solder in the 10mfd cap it connected +/- together.
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egg
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Post subject: Re: Zenith Have no Am/Fm where should I start? Posted: Feb Tue 06, 2018 12:00 am |
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Joined: Jan Tue 31, 2012 1:55 am
Posts: 11421
Location: Mountains of Mourne. Ireland.
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mark K
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Post subject: Re: Zenith Have no Am/Fm where should I start? Posted: Feb Tue 06, 2018 3:24 am |
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Joined: Apr Tue 07, 2015 2:36 am
Posts: 259
Location: Waterford MI
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Thanks for the one page schematic 
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fifties
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Post subject: Re: Zenith Have no Am/Fm where should I start? Posted: Feb Tue 06, 2018 5:30 am |
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 34036
Location: SoCal, 91387
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So is it fixed?
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\\\\\\\\\\\\\\\\\\\\\\\\He Who Dies With The Most Radios Wins//////////////////
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mark K
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Post subject: Re: Zenith Have no Am/Fm where should I start? Posted: Feb Tue 06, 2018 6:22 pm |
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Joined: Apr Tue 07, 2015 2:36 am
Posts: 259
Location: Waterford MI
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Yes traced it back to a cap I replaced had the solder connecting the +/- together.
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Tom Schulz
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Post subject: Re: Zenith Have no Am/Fm where should I start? Posted: Feb Tue 06, 2018 6:53 pm |
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Joined: Mar Sun 01, 2009 10:27 pm
Posts: 5176
Location: Ann Arbor, MI
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mark K wrote: Yes traced it back to a cap I replaced had the solder connecting the +/- together. You should always not do that as often as you can.
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Tom
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lorenz200w
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Post subject: Re: Zenith Have no Am/Fm where should I start? Posted: Feb Wed 07, 2018 10:50 am |
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Joined: Jan Mon 16, 2012 4:15 pm
Posts: 6098
Location: Near Brandon, Iowa
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Tom Schulz wrote: mark K wrote: Yes traced it back to a cap I replaced had the solder connecting the +/- together. You should always not do that as often as you can. If not even more often!
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