Vintage, but computerized Pfaff 6270 question
I hope this is the correct spot for this question. I recently got a Pfaff 6270 on Craigslist. It was sewing perfectly until yesterday, when it would only do a straight stitch forward, ( It have many stitches, practical and decorative.) We had an unusually hot and humid day here, 93deg. and I was away for hours and my house was HOT when I got home. Can this cause a machine to malfunction? This morning it worked just fine. I know that a computer can freeze up when it is very hot....can a sewing machine? I was shocked when I tried it this AM....but I wonder if it will happen again.
I don't think it's related, but when i got the machine a few days ago, from the husband of the owner, now deceased, it sewed OK but the presser foot was slow to go down. I assumed it was sticky with too much oil, so I left the light on for hours at a time, and it did loosen up when it's warm, slightly slow when it's cold. Can leaving the light on so much cause this type of problem? Ideas????