Radio no sound

I've got a 2010 Prius, been through hell or at least Hurricane Ian. My 2015 Prius totaled due to the saltwater flood. Miraculously the 2010 survived, lol, 280K miles on it. Radio was sort of flaky before the flood, the display was all garbled during hot days of Florida and sometime pressing any button would turn it off. After the flood, the display works but I get no sound. Volume controls show nothing, different modes, CD/Aux, get nothing. I don't mind getting a new radio but how do I know the speakers didn't get shorted by the salt water? Fan speed and front defroster controls don't work either since the flood.

 

It entered inside the cabin.