Hi Art... thanks for your interest... Here are my responses to your questions:

Q : 1) Does the display show anything when it starts acting up ?

The display behaves normally during this problem.. I can change frequencies, bands, and other options. The volume and everything else
works as well. It's only white noise that comes up... the station (and all
stations) are gone.

2)
Did you try using an external p/s and/or good batteries, and if so do
you get same response ?

I have tried new akaline, and fully charged NiMH batteries.. several sets.
They don't make a difference.


3) Before taking it apart have you tried
cooling the whole radio by putting it in a fridge (not the freezer )
for a little while and see if the problem goes away (temporarily)?

No! I haven't tried that yet, but I will give it a shot today and see what happens! I'll report back here.