tnx norma....cant wait for an inspiration with the answer

I sure hope you find the root of your problem

well it seems that the machine things other wise about the bobbin case!
it is no the reason - now the alams doesnt fuction at all! so i need to find the source of the problem...seems almost impossible

It's totally clear. I can see from an earlier post that you have the 580. We have a different system in the 830. Our bobbins are different and we don't have the loose bobbin case as other machines have.I know what you are talking about from my old Pfaff. If I put a metal bobbin from my first Pfaff in it, it could not use the light to register how much tread was in the bobbin.

hi guys, i have an answer about the thread that says it is broken while it isnt:
my dealer find that bernina deliver my sewing machine with the wrong bobin!!!
so the bobin that i had - is with out a little hole on the lower side of it, so the electronic eye cant
identify that there is a thread or not.
you need to check the bobbin that has a little hole on the lower side of it.
i hope it is clear.
cheers
becky

Same do I. I love my machine. I use a lot of different threads and the problem is worse if the needle is a bit big for the thread and chosen because the fabric layers are to the thick side. But anyway thanks for the suggestions.
I envy you having the possibility to go to meetings like you describe. That must be wonderful.

Zarah, In Australia I belong to a Bernina club and about every six months they hold a Series 8 day where we can air any problems and issues. I am a new owner of the 820 but have sewn on Berninas all of my life, so I have found this day (only been to one so far) to be extremely helpful. I don't have an issue with the thread pulling out of the needle, but I did with my 640. It was when I was using Guterman thread and after cutting my threads with the automatic cutter. When I changed threads to Mettler and Rasant the problem stopped altogether. Maybe trying different threads is worth a try. There are so many great quality threads available to try now.
I just love my 820 to bits. I learn something new every day, the possibilities are endless. I know they expensive, but, personally I think they are worth every cent.

Ridgehill wrote:
GREAT, I have observed that it stops after two stitches, so this makes sense to me.
I hope they will fix the thread slipping out of the needle also. It happens very often on my machine.

still waiting for my dear dealer answer .....it seems may be i need to buy a new machine to get an answer...any answer

Hi, I have been told my Bernina store in Australia that there will be an update for our 8 series that will fix this sensor problem. If the machine doesn't pick up the stitches right after two stitches properly with the bobbin thread the sensor is activated. The update will change the number of stitches to six before the sensor is activated. The problem will be eventually be fixed.

The metal "flapper thingy" is the tension disc. You can thread your machine either through the front or back of the tension disc. The reason there is a "front" and "back" to the tension disc is to thread a double needle. Then you would guide the thread from the rear spool pin into the rear of the tension disc and the center spool thread into the front of the tension disc. See page 19 of your manual. You'll notice that on page 18 regarding threading the upper thread, the manual does not specify which side of the tension disc to put your single thread. I went over this detail with my dealer when I first got my 830. She taught threading through the front of the tension disc too, but when I questioned it, she admitted you could go through the front or back. I think it was just easier for her to teach it one way with eight people in the class at the time.

I"ve been having lots of tensioning problems and I found out on my 830LE that becuase of the last software update, I needed to thread it slightly different than I was taught when I bought it 2 years ago. On the top of the machine there is that little metal flapper thingy... well I was taught 2 years ago, to put my thread toward the front of the machine in front of that metal flapper thingy. I"ve been having all sorts of problems with the sensor saying my thread was broken but it wasn't. I was told last week to put my thread behind that little metal flapper thingy or towards the back of the machine. And what do you know! I get that sensor error lots less often now. A thread net helps too. So now it happens lots less often.

I think that metal flapper thingy is the guide for the upper tension discs, maybe.

hi guys,as promised an update after visiting my bernina dealer:
he tried to change the sensor, didnt work.
it is very anoying, all the good advices you gave me didnt help.
so he will talk with bernina swiss (after the holidays) and he will update me soon.
cheers
b

Thanks for the comment on nets and tension, Michelle, definitely worth remembering and so easy not to think about in the first place. I might have a knee-high stocking or two in a drawer... I'll definitely try it. Speaking of stockings, but a little off the subject... when I took a sashiko class with Cory Pepper this past fall, she cuts the band of cotton socks away from the foot part and wears the bands around her wrists--it raises the temperature of your hand and makes handstitching more comfortable.