I've got a problem with my power windows that is puzzling me. 1990 w124. I made the mistake of opening one of my windows this morning. Went down fine, but won't go up. As I press the button it will continue to go down but will not go up. The strange thing is that the passenger window is doing the same thing. Now they are both stuck part way down. I can hear it clicking in the convenience module under the rear seat when I press "up". I tried a different convenience module and no improvement. That module was able to raise the passenger window today as a test in the other car. So what could it be, both switches failed due to humidity? It wouldn't be wiring, correct, since they still go down? Also not fuses, right? I twisted those to make sure, both for the convenience module and the power windows. I have some extra switches but they are not the right ones, and the ones in my other w124 are a little harder to take out on account of the newer style sliding door console over the wood panel that houses switches.
Any ideas?

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1990 300d 2.5 turbo
1995 E300d