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Take off the slide plate and reseat the bobbin case. Can you turn the handwheel by hand now? If not, you may have a thread jam that seized the machine causing the security device to activate to prevent further damage. This doesn't seem like a situation that would fry a board, but if it moves freely, but still won't turn on; take it to a technician or return it.
Be sure to use brand new needles in the machine (confirm they are the correct needles for the machine) and make sure they are installed facing the correct direction and pushed all the way up before tightened. Start a chain without the fabric, then when it's a couple inches long, raise the presser foot and add the fabric.
Could be your machine has a timing issue and probably requires service.
Your machine is complaining because it doesn't have the power to push through the layers of fabric. That clunking noise is the gears in the machine skipping and being sheered off (or it will be eventually) STOP!
If you feel that you need to continue... stop when it does this noise and use the HAND WHEEL. You'll also need to make sure that the presser foot remains level while going over thick seams.
At Joann Fabrics you can buy a notion called a Jean a ma jig, it is something that you put under the rear of the presser foot so that the presser foot stays level and will go over the seam easily. Make sure if you use heavier fabric or are sewing on denim use a #14 or #16 needle so that it won't break. Good luck
Have you taken your throat plate off and cleaned that out? You have to take a stubby short screwdriver and remove the throat plate. Sometimes, lint and cloth build up in there and it looks like felt almost. I was surprised when mine had it, I always followed the standard way of cleaning and lubricating until my friend told me about this. I was shocked, to say the least, that she was right. And my machine quieted right down. Hope this solves your problem
* Check your fabric to make sure it isn't caught on something.
* Check your pressure foot to make sure it's screwed tightly in place.
* Adjust the pressure of your pressure foot as it may be too light or too heavy for your fabric.
* Check your feed dogs for lint. If your feed dogs are clogged with lint, they're not gripping your fabric properly. Remove your pressure foot and clean out any lint with an old toothbrush.
* Raise your feed dogs if your machine has this function. They may have been inadvertently lowered.
* Check your stitch length regulator, If its set at “0” or a very small number, try switching to a longer stitch length.
* Change your needle, it may be damaged.
* Check your needle plate and make sure it's securely in place.
* Use a “Jean-a-ma-jig” or a “Hump-jumper”. If you've been trying to sew over a bump of fabric, such as a thick jean hem, try using this tool (your local fabric store should carry it). It keeps your pressure foot level as you sew over the bump and gives your feed dogs something to grip.