I think you need to take that machine to a different tech. How can the upper tension be off without the lower being off? Makes no sense.
I bought my Brother embroidery machine at Walmart, also my Singer 2662. I have not had a problem with either one...other than I messed up the brother twice by not reading the instructions & using the proper bobbin thread.
On your brother machine (what model is it?)...is it a drop in bobbin? I have the SE270D (since replaced with a PE something)...The bobbin thread has to fit into a little groove before wraping and being cut to the left of the bobbin area. I put a finger on the bobbin then pull the thread through the little metal lip (it has to go all the way) and then I wrap through the left side and cutter.
If the needle picks up the thread, but the bobbin does not stay threaded...it's in time...if it were out of time, the needle will not pull up the thread.
Did your LQS offer a different machine? Sorry to be skeptical, but what you are saying does not compute to me. I've had dozens and dozens of machines over the years (we got them at auctions and sold them in our used merchandise store)...cleaned and timed them. If the LQS services a machine, that should include timing. Do check that the thread is the right weight also...I was using 50 wt & my bobbin is factory set at 60wt as the thickest it will take. You want a bobbin weight thread (brother makes a really strong one), or bottom line thread...but do make sure to get it all the way under that little metal lip.
Originally Posted by
Lee in Richmond
Several months ago I bought an inexpensive Brother machine to replace my dying old Pfaff. It took me a while to like the new one at all, but it turned out the upper tension inside the machine is off, so compensating for that helped. The only problem I cannot seem to get over is the bobbin take-up.
A technician at my LQS showed me what the bobbin area should look like, how the thread end should cross over the inserted bobbin and then come up thru the plate. (Please forgive if these are not the right words.) When I need to insert a new bobbin I often have to take it back out and try over and over again, sometimes a dozen times, before it [the thread end] stays in the right place long enough to sew. And then it sometimes slips "out" in the middle of a seam, at which point it begins that looping nonsense on the underside.
Long, long story to this point, but the question is: Have you had this problem, and have you found a "cure"?