Roger,

IIRC the Sony ICF-2010 has separate RF Pre-Amplifier FETs
for the Whip Antenna and the External Antenna Input.
- - - Everyone I could be wrong - Someone Correct me if I am . . .

Usually it is the External Antenna Input FET that gets Blown
and needs to be replaced. Maybe you have a Blown Whip
Antenna FET ? ? ?

just an idea ~ RHF