Question about Janome 4623 Mechanical Sewing Machine

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Machine suddenly became noisy on sewing

I've been sewing with velvet. My machine is quite new and been used only a couple of times. It was it's usual silent self, sewing away happily this evening then, as I started a new piece with a new thread, it became noisy on sewing. I've tried other bobbins and threads (including what I was previously using), changed the needle and can't see any trapped threads, nor was there a sign of any. If I unthread the machine it is quiet, threaded it's noisy as if it has a blunt needle but it hasn't, it's from a new packet and appropriate for the velvet material. I can't beleive such a new machine has a problem nor one that is silent sewing when unthreaded. I've checked the manual and have threaded correctly. Any suggestions? Thanks. SB.

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  • Anonymous Mar 16, 2014

    when i thread my machine and start to sew it comes unthreaded

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Thanks. As no one had replied (it's been 8 months) I took this back to the shop I bought it from and they fixed under warranty.

Posted on Dec 24, 2007

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My Bernina Activa 140 (12 yrs. old,first time to have any trouble with it) has stopped stitching properly. The top thread looks normal but underneaty(the bobbin thread I guess) is just giant loops an


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If that is not the case here, try replacing your needle with a new one, as it might have developed a small burr, and be certain that it's the correct needle for the fabric. Sometimes it can also be that the needle is in backwards. Also, cleaning it, (the bobbin area), out thoroughly by using a soft brush and some canned air can do wonders for it. Then use a drop or two of sewing machine oil where your manual indicates it to go in that area.

If none of that fixes the problem, let me know and I'll see if there is a problem specific to your machine that can happen.

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Be sure to use good sewing machine oil in your machine. You can get it at any fabric store or order it online. One of my favorite online stores for sewing supplies is Nancy's Notions (http://www.nancysnotions.com/).

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