Take it to an authorized dealer. The Designer 1 only has one working part in the foot control, and maybe a cord retracting reel if it is an older model. With the cord reel, the part will be pretty pricey but without the reel it won't be too expensive. The first thing that they should do is check the machine with a working foot control to see if the machine functions normally. As long as it does, things are not too serious.
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Take it to an authorized dealer. The Designer 1 only has one working part in the foot control, and maybe a cord retracting reel if it is an older model. With the cord reel, the part will be pretty pricey but without the reel it won't be too expensive.
The first thing that they should do is check the machine with a working foot control to see if the machine functions normally. As long as it does, things are not too serious.