Radio issues

[Branded]

I have a 1973 Charger SE and don't know why the radio won't work. The radio was working when I got it but when I put it in the car, you can hear it come on, but no stations. I put in a new antenna and speaker. Could it be a grounding issue and if so, how can I troubleshoot the problem? Any help would be appreciated. I also have the same problem on my 1974 Dart Swinger.

Thanks!

 

[MWbirdLOVER70]

Check your speaker

 

[kiwigtx]

Check your wiring connections first.

 

[MWbirdLOVER70]

Check your wiring connections first.

Maybe wrong ohms

 

[kiwigtx]

Check your speaker

One way to check if speaker has any life is to briefly connect a small battery like a 'AA' across the terminals.
You should get some scratching or thumping depending on type of speaker.

 

[kiwigtx]

Maybe wrong ohms

Or impedance.

 

[twecomm]

Usually on these early radios, you get a bit of a thump I the speaker when turning on the power to the radio. That usually means that the speaker is good and you did state that it worked fine at a previous time. If you want to eliminate possibility of a bad speaker and test that the speaker works, you can disconnect the speaker from radio and use the AA battery as suggested, just touch it to the speaker leads very quickly or you can damage the speaker.
Having a multimeter is most helpful for electrical stuff in any car. You can set a meter to Ohms RX1, and again, quickly touch the meter leads across the speaker terminals. You will hear a thump / scratchy noise if it's good. It's also likely that there is a fuse for the radio in the cars fuse block, did you check that ? Make sure the antenna connector is fully seated in the socket. It won't receive anything without an antenna connection.

 

[devinism]

This may sound too simple.... Did you try it outside, away from trees and tall buildings?

 

[RJRENTON]

Or impedance.

Speaker resistance is measured in terms of impedance.......both DC resistance in terms of Ohm's, like 4 ohms or 8 Ohm's plus AC impedance, like 4 ohms or 8 ohms, because the speaker is a DC device energized with an AC signal......music, spoken word etc.......
BOB RENTON

 

[kiwigtx]

Speaker resistance is measured in terms of impedance.......both DC resistance in terms of Ohm's, like 4 ohms or 8 Ohm's plus AC impedance, like 4 ohms or 8 ohms, because the speaker is a DC device energized with an AC signal......music, spoken word etc.......
BOB RENTON

I just wanted to make sure we weren't measuring in Roentgens.