I have a 1991 Saab 900. The sunroof was sticky so I puller out the little brick between the front seats containing the switches for the windows and the sunroof. It's all one unit. I opened it up to spray some contact cleaner on the switch and the springs came out. I had them put back in a by a Saab mechanic, but now niether of the windows work, only the sunroof. Did I burn the switch out? There don't appear to be fuses for the windows under the hood and I check all of the fuses. None were blown. What could this be? Thanks!