NO SIGNAL FROM EXT ANT JACK
This particular model is known to be prone to static electricity.
You may try first to reset the radio by taking all the power sources off, including AC power, the D batteries, and the AA batteries. Leave it without any power for a day (at least 12 hours, but 24 hours would be better).
This would cause a processor reset. Plug the power sources after 24 hours and check it out.
If that doesn't bring it back to life, then you may have to open it and do some more involved work (if you are handy with soldering and replacing electronic parts).
Usually the sensitive part that gets fried by static electricity and causes your issue is the Q1 transistor, which is a field effect transistor (FET).
Most likely your FET Q1 is a Sony product which maybe labeled as 2SK152. It's out of production, but you may find it at some major electronics outlets, such as Mouser Electronics.
There should be some equivalent FET out somewhere (RadioShack, perhaps?), if this particular one is not found.
Replacing the FET should be an easy job after you have opened the cover (5 screws), and unscrewed the board.
Just be careful not to cause further damage by static electricity from your body (wear a grounded static discharge strap), and be very careful handling the board.
Best of luck, and hopefully you will comment here if this has helped you resolve this issue.
Sep 14, 2014 |