In frustration with the local Singer service shop (you may remember, I took my perfectly working XL5000 in for routine
3-million-stitch cleaning and service, it was returned with several features not working), I called the Singer Authorized Warranty Center in Snohomish WA, and asked him if I could bring the machine to him for diagnose and service. He cautioned that doing so would void any warrantee the local shop provided on their work, and urged me to follow through with them He gave me several very good pointers, including suggesting that it was possible the local service guy had simply failed to re-connect some of the motherboard connectors (which have to be disconnected) after opening up the machine..I called and asked for the manager at the local shop, he is meeting me ay 1:30, says "he will make it right."
Cross your fingers,