Windows go down, but not up! Help!

[cliptfc]

Ok, every once in awhile (very rare) I can get the windows to come up. Even when I am lucky, they will only go up as far as they do when the top is down. They will go down fine. When they won't go up, you don't hear a thing coming from them, but if you push the down button (when they are already down), you hear a "click."

I don't think it's the motor because both doors do the exact same thing! When they want to work, they both do. When they don't want to work, they both dont!

I have heard that the convertible top sensor may cause some of these problems? Where is it located at? Even if it was the sensor, wouldn't the windows still come up to the "top down" point?

This is just about the last of the bugs I am working out of this '99 Box! Can't wait to figure this one out!