What are the most common issues with the Audi 80 power windows and how can they be fixed?

I recently bought a used Audi 80 and noticed that the power windows aren't working properly. I want to know the most common issues with these windows and how I can fix them myself without taking it to a mechanic.

One common issue with Audi 80 power windows is a faulty window regulator. This can usually be fixed by replacing the regulator with a new one.

Another common problem is a malfunctioning window motor. In this case, replacing the motor should solve the issue.

It's also possible that there is an issue with the window switch or wiring. In this case, you may need to repair or replace the switch or rewire the window.