bad storm this afternoon. driving my rover and i believe a power downed power line grazed my rover as i was driving it. it was not yet on the ground and i swerved to avoid it. but not sure if i missed it completely. i did not hear anything. but immediately after this happened the speakers in my rover developed a loud and low hum. they have now diminished into static. there is also a hum coming from the engine compartment when my rig is turned off. i left for work almost immediately after this. 10 hours later the rover still fires up right away. so whatever is running/humming in the engine compartment did not drain the battery. it seems to run fine and there are no dash lights illuminated except the srs which was lit before. what might i have done to the electrical system? any direction on the possible damage or what may be running inside the engine compartment w/ the vehicle off would be appreciated. thank you much.