My aurora 440 screen goes blank when I stop sewing, I have to switch off and switch on again for the screen to come on again with the stitch size
I'm not exactly sure what the symptoms are .... do you mean that you can sew a long line of stitching without problem and then when you stop sewing, the machine turns off ? If this is what's happening, it could be a problem with the main motor drive circuitry ... when you stop sewing, there's an electronic brake that stops the motor in the right place and it sounds as though this has gone faulty and is killing the power supply. Unfortunately, if this is the case, your machine may well need to have its main control board ('S'-print) replaced, which is not cheap (check your warranty). Check the machine again, exactly what are the symptoms ... sew-off a reasonable length of material on a short stitch-length and check whether the machine 'dies' when you take your foot off the foot controller. Also, have a look to see if the sewing light and/or display backlight are still on when it has died.One other thing you might like to check is that there are some indicator lights that show whether the main power supply is OK and the processor is running .... these lights are behind a 'door' on the front panel ... you're probably not even aware that the door is there. If you look on the left-hand-side of the upright part of the front panel, to the left of where it says 'Quilters Edition' and about halfway between the base and the sewing arm, you'll see a thumb-sized semi-circle in the plastic, that is grooved ... look closer and you'll see that the front panel below the silvered part is a 'door' in the front panel and this semi-circle is the release for that door. If you press firmly on this semi-circle, whilst pulling the left-hand edge of the door with the big 'QE' on it towards you, it'll come off ... you do need to press the semi-circle quite firmly to release the cover. Behind the door are a set of 5 yellow LED indicators - the top four should all be brightly illuminated, whilst the bottom one should be flashing. If you repeat the sew-off, note whether any of the LEDs goes out, or goes dim (particularly the one labelled 30v - this is the motor supply voltage). If the 5v LED goes dim, this might be a fault on the power supply module ('L'-print), which is alot cheaper to repair than the 'S'-print. To replace the door, just re-insert the two lugs on the right-hand-side into the square holes in the front panel and push it back in place until it clicks firmly back. Good Luck, but be aware this may mean a trip to your Bernina service agent. Get back to me with the results.
Nov 21, 2011 |
Bernina Sewing Machines