Need help with my Pfaff 18.8 longarm

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by , 12-01-2013 at 08:00 AM (425 Views)
I have a Pfaff 18.8 longarm with Qbot which I have been using successfully for the past few years, it is the same as the Tin Lizzie 18LS and the Viking 18.8. I purchased this machine used and live 5 hours drive to the nearest Pfaff longarm dealer. There are also no Tin Lizzie dealers. My machine has an intermittent problem: the needle continues to go up and down when the " auto stitch" stops (the needle is also supposed to stop moving). It also does the same thing when I push " needle down", it is supposed to only go up and down once but continues until I turn off the power. My husband put in some substitute switches to see if that would help, it made no difference. Sometimes I stitch an entire quilt putting up with this and then it suddenly returns to normal function. It makes me think something is loose but there is no apparent cause. I have cleaned everything I can think of and unplugged and replugged all connections. We opened the power box and there is nothing apparently loose. Has anybody else had this problem? Do you know the solution? Any help would be appreciated.
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  1. quiltingshorttimer's Avatar
    wow--that would make tension problems seem almost tolerable! But seriously, have you called the tech support? The loose connection sure sound slike a probable cause if you can find it.
  2. grann of 6's Avatar
    I have a Viking 18/8 that is back in Tennessee at the factory. It was there in January till April having the bearing replaced, and got all new electronic boards replaced. Now 6 months later the stitch regulator has gone wacko, stitching and not being able to stop it without turning it off. To say I am a little disappointed, is somewhat of an understatement. I have to have help taking the machine in to my dealer and bringing it back and setting it up again. Call your dealer and see if they can arrange to have it picked up and sent to the factory for repair. Luckily mine hasn't cost me anything, Viking covered all costs. I bought it as a floor model, and I realized after a year of use that it was never right from the day I bought it. Good luck getting it repaired. I hope all goes well for you. I am in the process of buying a replacement machine, hoping I have better luck with a different brand.
  3. grann of 6's Avatar
    I thought you might like to know that I just got word that my longarm has returned from its 5 week stay at the "spa". It needed new hand controls and all new wiring harnesses, was lubed and cleaned....all at no cost to me. So stick to your guns and insist from fair treatment from your dealer. HV has been nothing but fantastic through all this mess with the longarm. I can't say enough good about them. Sadly, their product is rather undependable, but at least they stand behind it. I hope you have as much luck with yours. It sounds like you have the same problem I did.
  4. EMorgan's Avatar
    I have a Pfaff 18.8 as well and it does the same thing that you're describing. Irritating as heck! I purchased this machine last year as a refurbished machine and when it works, it works well...but when it gets an attitude it's a major pain.

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