First off, I'm very unknowledgeable about shortwave radios.
I have a Realistic DX-440 that I hadn't used in over 6 years.
Whether I power it on by batteries or ac adapter, it won't receive
_any_ frequency. Any band that I scan, it won't stop. I have the RF
set to "max". It won't even receive local AM or FM radio stations when
I tune them in. There is no sound when it's scanning, but I do hear
static when I stop a scan.
The signal strength indicators flash for a second when I first turn
the radio on. But there is never _any_ signal indicator during a scan
or even when I manually tune to the frequency of a local radio
station.

Any help/suggestions appreciated.

Joe