I've not had this problem. You can go to the Brother website and either email them your problem or call and talk to a technician who may be able to help you with this problem. You can avoid a lot of repairman fixes by calling Brother first and speaking to one of their guys. I'm sure it won't be the first time they have heard of this happening. They are experts and they are free!
I use the rubber shelf liner that you can get at the dollar store under my regular sewing machine to keep it stable. That may also help with the vibrations.
Originally Posted by
Theodora500
Mine is doing the same thing! It's 1.5 yrs old. and I LOVE it--except for this! When I adjust it back to "3" the dial continues to move in the same direction I adjusted it. IE I tighten it to "3" then it continues to tighten, so I loosen it back to "3" and it continues to loosen.
I'm driving 45 minutes to my nearest "authorized" repairman, and he can't find anything wrong with it. He's also lecturing me about only using the exact same wright and brand of thread off the spool and on the bobbin.
Could the vibrations from the machine cause the knob to move? It was suggest to cut up a yoga mat and put it under the machine to absorb the vibrations--if that's the problem.
I'm tempted to take it somewhere else but don't want to void the warranty.