I have such a hard time reading posts like this. If we can't fix a machine, we would never expect a customer to pay. And we only charge $70 for a full service. It takes about 10 minutes to figure out if it's the circuit board. The only technician who can replace your circuit board is an authorized Viking dealer. The rest of us can't get the part. Definitely check your warranty. Bernina circuit boards are warrantied for 5 years, Juki has a 2 year warranty. But I don't know about the other brands.