My riccar sewing machine is kind of computerized. My son punched some buttons and now the needle arm won't come down at all when you step on the foot pedal even though its obvious it can do the various stitches. What do I do? Is there a code to unlock it? Cos I figure it's just locked. I love the machine

SOURCE: Needle doesn't move the problem isn't the foot pedal

Same problem with my 400. I took it in to dealer and they said main computer board on my machine would have to be replaced. Fortunately, they agreed to get it fixed for me. My machine is 2 years old. How old is yours? I wonder if this could be a manufacturer defect on the machine? Maybe this needs to be addressed with Viking Husqvarna Corporate.

SOURCE: I live in Ecuador. I

Good day!!!

If your screen stated"main motor blocked" then I suggest you remove the thread,both the top and the bottom.Please change the needle too.but If the problem is unsolved,kindly loosen or unscrew the casing which is in the front of the bobbin, then look/find anything that might be obstructing the bobbin. check again the thread, bobbin and needle.Also for the last thing put an oil to the parts which you think it needs it like the moving parts re-start or reboot it then leave for a whole night.
Thank you and good luck...

SOURCE: My Husqvarna Viking Emerald 183 has always had a

There is a sensor on the upper shaft that recognizes the position that the machine is in. A small disk on the upper shaft that has sections removed from it will block the sensor trough some range of operation and not at other times.I have never seen this in a 183, but you may have a sensor that is misaligned so that it doesn't completely block or clear the beam of light.It will need to go to an authorized repair center for repair. Some of these parts are very delicate. Don't risk damaging something working on it yourself.

SOURCE: My machine won't sew since I replaced the broken needle

when the needle broke it's very possible that it knocked the needle bar out of time, & needs to be taken to a sewing machine shop to be retimed

SOURCE: SINGER 9960 Quantum Stylist 600-Stitch Computerized Sewing MachineWhat's your problem?

once it jammed it jammed the gears inside also, witch maybe plastic.
If thats the case it maybe toast!