On 8/12/2021 11:50 AM, Bob Wilson, N6TV wrote:

But if there was lightning nearby while the antenna was connected, many more chips could be damaged.

I think if there was too much voltage on the input then it is more likely that the A/D converter is the affected IC. The USB interface is unlikely.
Also it could have been coincidental that there was a thunderstorm and the pweor supply regulators died which is the usual case.

A simple DC voltmeter placed on each of the regulator outputs will tell you if they are all good.