IT WANTS TO RUN ALL THE TIME NO MATTER IF YOU STEP ON THE FOOT PEDAL OR NOT, I HAVE UNPLUGGED IT WHILE IT IS RUNNING AND LET IT SET PLUGGED IT BACK UP AND STILL KEEPS RUNNING IT COULD BREAK A NEEDLE!! I NEED HELP PLEASE!!
Hello, I hav no idea of what type of machine you are using but, I have two older Kenmore mechanical sewing machines and a very old Dressmaker and have fixed the same problem with mine.
If you gently remove the outer metal housing on your pressure foot control, (unplug it from both the outlet and the machine) there is a black metal coil like thing with two longer end pieces. They respond to your foot pressure, tranferring that pressure to a series of parts and copper to complete the electrical connection needed to run your machine.
Look and see if there is any rust around that black coil piece. If this is the problem, your pressure foot is getting caught and frozen in the "on" position and unable to dis-engage to stop the electrical connection to your sewing machine.
Clean any rust, (emery or steel wool works for me) check your wire connections, dry it completely and replace the foot petal housing. It may take a little tinkering but this will work if this is the problem. Best Wishes.
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It sounds as though the foot pedal is the problem. Maybe a shorted out wire in the actuator (rheostat). When your foot is off the pedal there should be no power running through it. If it has a short then it "thinks" the pedal is partially depressed to the slow position so runs at that speed. If the pedal can be removed/unplugged from the machine, do this and see if the machine stops running.
There can be a few problems that match your inquiry. Pleas check the machine in the following logical order:
The power cable can be defective....With the machine plugged in and un-threaded, step on the foot control to check for a motor run condition and at the same time wiggle the cables at the motor plug connection. If the machine runs/stops/runs and stops, it is likely that the cables and or plug are damaged. Replace the cable. If the cable is found to be good, go to step 2.
Check the motor run condition by changing foot controls. If the machine runs without a run/stop problem, the original foot control will have to be rebuilt. If the foot control is found to be good, go to step 3. Step 3 is for a qualified technician level of competency only.
Remove the power cable, back cover, motor belt, motor housing. Remove the closing plate on the back of the motor housing to inspect the motor brushes. If the carbon brushes have worn out, you will probably find some damage to the commutator bars due to the brush springs having arc-worn the commutator. Generally, this type of damage can be repaired with excellent results. Most of the time however, motor brushes are installed by a sewing machine repair person, but no effort is made to repair the damage by resurfacing the commutator to a precision cylindrical diameter. This being the case, new motor brushes will have a very short life and further damage to the motor is likely.. Amateur attempts are sometimes made by applying some sort of tool or sandpaper to the commutator while the motor is running in an attempt to resurface, but concentricity and cylindricity cannot be achieved in such a manner....If the motor brushes are good go to step 4.
Examine the commutator bars on the motor armature carefully for any burned spots on the borders of the copper commutator bar insulators. If such burn spots are evident, the armature will have two or more dead spots. At this point, the motor should be replaced.
Is the foot pedal not returning to the off position? Try disconnecting the foot pedal. If the machine stops running, then your problem is in the foot pedal. If it keeps running, then your control board is bad.
This is most likely a fault in the foot control. Normally supplied with this machine is a Type 10 and this can be fixed quite easily but probably not by the machine's owner unless you have some electrical and mechanical experience.
If you have knowledge of and access to a multimeter, you can test it. What working properly, you will find the following:
Pedal released: resistance is infinite (anything around 4k Ohms or less and the machine will run).
Heel pressed: resistance is about 10k Ohms.
Toe steadily pressed from nothing to all the way down: resistance is infinite then after a small depression, jumps to about 4k Ohms steadily decreasing to zero as the pedal reaches all the way down.
Your problem, being at the point where the pedal isn't pressed suggests that there's some contamination in the pedal. It's also possible that you have a type 365 pedal (as used on the 930) and this is more likely to give this kind of trouble due to the use of carbon brushes in this foot pedal.
check the plug in to the outlet first then check the power cord connection to the sewing machine could be something wrong with the power cord could also be something wrong with the motor also could be a wiring problem
Yep same thing .....the thing is possessed started running by itself when I was at the iron. Dealer said never heard of such a thing and acted like it was me. Also will not stop sewing when take foot off pedal. Dealer charged me $95 to clean machine and said nothing wrong with foot pedal. Ugh. Has anyone replaced foot pedal and found the problem to stop properly?
That problem sounds like a bad foot pedal. It's possible that the mechanism inside the pedal is stuck in the "on" position. The pedal needs to be taken apart and checked to see if thats the problem.Make sure the machine is UNPLUGGED! Then you could just disconnect the wiring from the pedal, and plug the machine back in and see if it runs. If you decide to try this, cover the ends of each wire individually with electrical tape. Do not allow them to touch each other when you are doing your test. If the machine doesn't run, the pedal is your problem. If the machine does still run, with the pedal disconnected your problem is inside the machine and will require a trip to your service tech.
Same thing happened to my CE-200. It would only stitch one stitch at a time or else it would run full speed. My husband made an adjustment through a small hole on the back of the pedal and it now works much better. The adjustment hole apparently allows you to set the sensitivity of the electronics inside the pedal. He turned it slightly toward the + direction. It took a couple of small adjustments to get it to work nearly normal again.