power vents

About 7 years ago I had a new roof installed. At that time the roofer advised me to remove my 2 power vents. I should have listened so the power vents remain in place and not working. I have issues with the motors burning out and they not worth fixing. I understand that if they provide any benefits is debatable.

I have a ridge vent with soffit vents. I also have two screen vent in the dormers.

I am looking for opinions on what to do the power vents

This what I have so far

1) leave them in place and disconnect the power

2) take them out and replace with roofing ( nor sure if that is doable)

3) remove and replace with some passive vent.

The roofer who did the original work is no longer in business

I like more knowledge before I contact another roofer in town

Thanks

TJ