Machine is jammed and will not budge,,,hand wheel will not turn

If both the needle and the hand wheel on your Singer 140Q sewing machine are jammed, it indicates a more serious issue that likely requires attention. Here are some steps you can take to troubleshoot and possibly resolve the problem:
1. Turn Off the Machine: Start by turning off the sewing machine and unplugging it from the power source. This ensures safety while you troubleshoot the issue.
2. Check for Obstructions: Inspect the area around the needle and hand wheel for any obstructions such as broken needles, tangled thread, or debris. Remove any obstructions carefully.
3. Rotate the Hand wheel: Gently try to rotate the hand wheel manually. If it's stuck, avoid forcing it as this could cause further damage. Instead, try to identify what's causing the jam by examining the mechanism closely.
4. Inspect the Bobbin Area: Open the bobbin case and remove the bobbin. Check for any tangles of thread or debris that could be causing the jam. Clean the bobbin area thoroughly.
5. Check the Needle: Remove the needle and inspect it for any damage. Replace the needle if it's bent, dull, or damaged in any way.
6. Oil the Machine: Lubrication is important for smooth operation. Apply a drop of sewing machine oil to the moving parts, such as the hand wheel shaft and other points indicated in your machine's manual.
7. Professional Inspection: If you're unable to resolve the issue on your own, consider taking your sewing machine to a qualified technician for inspection and repair. They can diagnose the problem accurately and perform any necessary repairs.
Attempting to force the machine to work when it's jammed can potentially cause further damage. So, proceed with caution and prioritize safety while troubleshooting the issue.

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Wow, this may sound strange...but I just had a similar problem w. my machine. IT WOULD NOT BUDGE!! Had it all apart TWICE. I finally turned it upside down and shook it...out can a bobbin from the INSIDE of the machine. It was preventing it from turning. I cant tell you how it got there, bazaar!! I had to take the top off to get to it, still has me baffled. So give it a good shake and see if anything falls out of yours.

Sounds like it has jammed up.

The needle either not moving or stopping is a sign that the machine is jamming. Here's the answer for the question "My machine is jammed" from the FAQs on Singer's web site at http://www.singerco.com/support/faqs.html

A jammed machine is caused by thread being caught in the hook. Remove the upper thread and the bobbin case, turn the hand wheel towards you (counterclockwise) by hand and remove any thread in the bobbin case area. *Always turn the hand wheel towards you. Turning the hand wheel away from you (clockwise) can cause the machines timing to become unaligned and jam your machine. Also, always make sure the presser foot is in the down position before you start sewing. Sewing with the presser foot in the up position will jam your machine in the bobbin case.

Your description of the needle hitting the plate or foot is an indication that the machine's timing has become unaligned which can be caused as indicated above by turning the hand wheel away from you - the correct way is to *Always turn the hand wheel towards you.

A jammed machine is caused by thread being caught in the hook. Remove the upper thread and the bobbin case, turn the hand wheel towards you (counterclockwise) by hand and remove any thread in the bobbin case area. *Always turn the hand wheel towards you. Turning the hand wheel away from you (clockwise) can cause the machines timing to become unaligned and jam your machine. Also, always make sure the presser foot is in the down position before you start sewing. Sewing with the presser foot in the up position will jam your machine in the bobbin case.

You need to take the bobbin case out to check thouroughly for a piece of thread that may be stuck, that is usually the answer.

You need to remove the bobbin from the "race" by following the instructions in the manual. Give it a good clean and remove any bits of fluff and thread. Remove the upper thread also andmake sure that the tension wheel is clear of any broken threads and is on the correct setting. It may have been threaded wrong. The hand wheel not turning sounds like the bobbin area is jammed also.

Thread is caught in the hook...Remove the upper thread and bobbin case...turn the hand wheel backwards and forwards by hand and remove the thread remands. Good Luck

Thread is caught in the hook...Remove the upper thread and bobbin case, turn the hand wheel backwards and forwards by hand and remove the thread remands