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#1 |
Registered User
Join Date: Aug 2018
Location: St Petersburg FL
Posts: 12
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1971 C20 radio nt working
The radio AM Radio on my C20 doesn't see to be working. Replaced the Antenna, nothing. Tested for power, OK. Still no sound. Any Ideas fro trouble shooting?
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#2 |
Senior Member
![]() Join Date: Oct 2009
Location: Godley, TX
Posts: 17,963
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Re: 1971 C20 radio nt working
Welcome to the site. Can you elaborate on ‘not working’ - ie no sound or just static? Regardless, you’d want to ensure the speaker is connected and that the material is not all torn up or deteriorated. Stock speaker?
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#3 | |
The Older Generation
![]() ![]() ![]() Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,487
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Re: 1971 C20 radio nt working
Quote:
http://www.turnswitch.com/speakers.htm It would be the "4" x 10" Delco Style Special Rectangle", about half way down the page..... LockDoc
__________________
Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - |
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#4 |
Registered User
Join Date: Aug 2018
Location: St Petersburg FL
Posts: 12
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Re: 1971 C20 radio nt working
Thanks. So no sound at all. Sounds like you folks think the speaker is dead. Ill check that out first.
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#5 | |
The Older Generation
![]() ![]() ![]() Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,487
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Re: 1971 C20 radio nt working
Quote:
The thing is there is no way to tell if the radio is working without a known good speaker...... LockDoc
__________________
Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - |
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#6 |
Registered User
Join Date: Aug 2018
Location: St Petersburg FL
Posts: 12
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Re: 1971 C20 radio nt working
Ok, So it eliminated the speaker by using a known good speaker and proved the old speaker is in fact dead.
Now when i turn the radio on, I get static but only when I turn the volume constantly. And i never tunes to a station. I followed the antenna instructions and tuned to 700/1400 and attempted to "trim the antenna" no luck. Thoughts? Thanks JD |
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#7 |
Registered User
Join Date: Dec 2009
Location: bisbee, arizona
Posts: 1,529
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Re: 1971 C20 radio nt working
My understanding is that the radio must be grounded and the speakers connected to work.
If they are not the internal damage may result. |
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#8 |
The Older Generation
![]() ![]() ![]() Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,487
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Re: 1971 C20 radio nt working
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I think they need to be 8-10 ohm speakers or the radio can be damaged but I'm no audio guru.... LockjDoc
__________________
Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - |
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#9 |
Registered User
Join Date: Aug 2018
Location: St Petersburg FL
Posts: 12
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Re: 1971 C20 radio nt working
The radio is in the truck, grounded and 8ohm speakers. Were getting closer. I suspect the tune is old/dirty.
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