I see this quite often.. Lots of people use these comm receivers for BC
listning..Quite often lightning will zapp the BC band RF input
transformer.. If that is the case, it can usually be rewound and
repaired. You might test it by connecting an antenna through a 200 pf
or so capacitor between ant and RF amp grid pin..If it receives ok then
you need to look at input circuit.. GL W4PQW