Hello! Have 1964Plymouth Belvedere w/orig AM radio Mopar Model 220, w/single center dashspeaker. Installed new antenna, Radio was working fine. Used someCRC contact cleaner (non-greasy) thru on-off switch and dial stalks only ,reduced ‘scratching’ sound somewhat. Worked fine for a week. Nownot working. If I turn on radio, light comes on, still small amount of scratch,but gets louder as I turn up volume. Like it’s not picking upsignal. Replaced antenna, have good continuity between center pole ofplug and antenna mast. Good continuity again ground/outer portion ofantenna plug and inner fender attachment of antenna to body (was able to reachw/probe) and good continuity of antenna ground directly to Neg terminal Battery(new body ground wire) . Both antennas same continuity. Haveslowly turned Antenna Trim screw w/radio on in both directions with Noresult. Can anyone offer suggestion as to what’s going on? Have reprintChryslers shop manual w/wiring diagram, I can do basic checks, but not familiarw/interpreting extensive wiring diagram. Unsure if there is fuse/resister orsimilar inside.

 

Is that a Bendix AM radio?

If so.... More than likely one of the resistors got damaged.... Just what it sounds like to me.

 

Thanks RacerHog.

 

If that unit is the Solid State unit.... Check with these guys to see if they can fix it for you..... http://www.wardsclassiccarradiorepair.com/

Their also are a couple of sharp guys over on the: http://www.imperialclub.com/
Thay use to help with some of the old radio stuff...

Hope this helps Yall get it working..... Keep us posted...

 

It's all transistor, so maybe solid state. Not the expert, but will checkout sight you listed. MUCH THANKS!! RacerHog/DYNO-BOB!!