Take off the door panel and examine whats broke. I think you can purchase a new window regulator.
I'm not sure about you model but with most models this type of repair is well within the scope of the backyard mechanic.

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1990 190E 2.6
1996 Grand Voyager 3.3
1985 Mustang GT 5.0 5 SPD
1982 Suzuki GS 750T