I dopped the foot pedal it came apart Viking Husqvarna980 I want to see a video of it

SOURCE: Viking 1+

Your foot pedal plug is loose or possibly unplugged. You could also have a piece of fabric or thread that may be caught under the plate or around the bobbin. Remove all lint and oil the machine making sure the foot pedal plug is tightly in the machine.
Zelma

SOURCE: Husqvarna Viking #1 use same foot pedal as the #1+ ???

Yes it will work, you can go ahead and purchase it.

SOURCE: husqvarna viking 425

Try ebay or contact your local authorized Husqvarna Viking dealer. You can find a local dealer from the Husqvarna Viking website - http://www.husqvarnaviking.com/us/

SOURCE: Need Foot Pedal for Viking Classica 100

Any foot control will fit, you can get them at any sewing machine shop they are standard, only two wires to connect which is very easy

SOURCE: White 1600 SpeedyLock. Power, but foot pedal

When stepping on the foot control, does the motor hum or anything? Or is dead silent? If it sounds like it's trying to do something, the serger probably needs to be serviced. If it's silent, you probably need a new foot control.

Testimonial: "No sound. I ordered a new foot control. Thank you. "