New home memory craft 6000 won't run?

My New Home Memory Craft 6000 won't run, It powers on, but when I push the pedal it doesn't run, It makes a slight sound like it wants to but nothing happens. It is not locked up the machine works manually. Do you have any idea what might be wrong with it. I bought a new foot pedal thinking that might be the problem, but it wasn't. It is and old machine , and was expensive in its day, wondering if it would be worth having repaired. Thanks Loretta