Hello All,
My SAMs AR-28 has gone into "The Twilight Zone". I'm trying to troubleshoot this radio and I'm getting nowhere because the components are all jammed and crammed into a tiny area. I have searched and cannot find my AR-28 anywhere. Which one is the oscillator transistor? It fails the "hold another radio near it and tune test". It can only receive AM in a TRF way somehow. When the oscillator trimmer is tuned one way it receives one set of stations. When it's tuned a different way, it receives another set of stations and ignores the first set of stations. It appears to have a dead oscillator. FM is completely dead. It will pick up a tone on 10.7 MHz from my signal generator on FM. Similar results on the AM band with it's frequency. So I think the fixed frequency part of both tuners is working.

Please help if you can.

Thanks,

Dave

Hello Again All,
This is a Rambler car radio.

Dave
:Hello All,
: My SAMs AR-28 has gone into "The Twilight Zone". I'm trying to troubleshoot this radio and I'm getting nowhere because the components are all jammed and crammed into a tiny area. I have searched and cannot find my AR-28 anywhere. Which one is the oscillator transistor? It fails the "hold another radio near it and tune test". It can only receive AM in a TRF way somehow. When the oscillator trimmer is tuned one way it receives one set of stations. When it's tuned a different way, it receives another set of stations and ignores the first set of stations. It appears to have a dead oscillator. FM is completely dead. It will pick up a tone on 10.7 MHz from my signal generator on FM. Similar results on the AM band with it's frequency. So I think the fixed frequency part of both tuners is working.
:
:Please help if you can.
:
:
:Thanks,
:
:Dave
:

The AM oscillator coil is the can with the red top slug.
The transistor in question would have connections there.

:The AM oscillator coil is the can with the red top slug.
:The transistor in question would have connections there.
:
Hello Dave I scanned the info for you should be in your inbox.
Best regards, Paul