I was sewing with my two year old Artista 630 when the screen went gray and it just stopped. There had been no accident, e.g., I didn't break a needle or anything like that. It just stopped. Since then, the machine will turn on and stay on briefly. But whether it's just sitting there or I'm actually sewing, after a few minutes the screen turns gray and it "goes to sleep." There is no error message or warning. The machine's light remains on, so I don't think the problem has to do with the power source. Do you have any thoughts as to where I can start troubleshooting before I take it in for repair?
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