Samsung vcu366 is very noisy almost deafenning.how do you solve it.

If you mean noisy like does not "purr like a sewing machine", use it. Mine quieted down but it took a lot of use before it did.

I bought a new Pfaff and was alarmed at how noisy it was, particularly the snips cutter. This was unacceptable and I sent the machine back, but I don't know if all machines with snips make this awful noise.

If it is mechanical (not computerized), a thorough oiling with good fresh sewing machine oil or Tri-Flow Synthetic Lube will likely make a vast improvement. Open the top, the left side cover, and the area under the sewing surface. Gently rock the handwheel and apply 1-2 drops of oil every place that metal rubs against metal. Do NOT oil rubber/fabric belts, leather, plastic, synthetic parts or computer components. Old oil turns to glue and then varnish and actually inhibits movement. Keeping the oil fresh will help your machine keep running for a long time. Oil at least every six months when not in use. More often if the machine is used frequently.

https://www.youtube.com/watch?v=bsn4qvDRbtg

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Noisy sewing machines usually need cleaning and lubrication.

Take it back to the store. That's not normal.

If you just had serviced a month ago I would take back and tell them to fix the problem you did not have before they serviced it, or try calling maybe then can advise over the phone.

It may just need cleaning - check the maintenance section of the manual for how to do this.

If you need a manual, check at the Singer Company website.

Try changing the needle - a dull one will cause noisy sewing and will make your machine work very hard. if you have tried that - sorry!

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.

Is it the correct size bobbin?
If you have spare bobbins do they all make a noise?