I sympathize with you, my 20 year old viking just up and quit. If they could find a mother board for it it would still run about 600.00 to 800.00 dollars. My d husband said, get a new machine that one doesn't owe you a penny. It's just that my viking has been apart of me for so long there is an attachment I haven't quite let go yet. I do have other machines, but they will never be what that viking has been. I told the dealer, I'm taking her home and she will go with me to my grave. He probably thinks I'm nuts, but oh well I didn't buy another machine Yet.
Good Luck
Suzy