We have an electrolux ultraone and today when we tried to turn it on it turned on for 2 secs and turned off - the "auto" button is still flashing though - any tips to fix this would be great!

just fixed one at work today for a bloke I work with it had the flashing AUTO light & turns off after a couple of seconds. Keep in mind I've never fixed a vacuum cleaner before but i am an electronics technician so it wasn't too hard. I'll list how I did it best I can from memory.
What caused his to do this was where the hose connects to the unit there is 3 wires you can see this from the three prongs where it connects. Take off the hatch on the hose with a size 8 Torx driver. once Off you will see three loops of metal and the part that separates will have three contacts with wires leading to the prongs. What happened to his was the middle loop came off and the wire under it had broken free and I suspect shorted to another contact.
I soldered the wire back to the ring and shaped it back together holding it with solder.
Take the cleaner apart I think you need a 20 or 25 Torx driver to do this.
Its tricky and can't remember exactly how to do it without the unit in front of me.
What your looking for is a circuit board on the side of the unit. theres two of them you want the bottom one the top one is for power regulation. theres also the one at the top with the LEDs etc don't worry about that.
On this board inspect the FUSE its a 250V 3.1A and its soldered in, I replaced it with a 3A since it was all I had.
Test it and remember to attach the nozzle back before powering it on. From what I can tell those three metal loops are antennas for the controls on the handle.

The one I fixed was a Z88701p I think Australian model. just fixed one at work today for a bloke I work with it had the flashing AUTO light & turns off after a couple of seconds. Keep in mind I've never fixed a vacuum cleaner before but i am an electronics technician so it wasn't too hard. I'll list how I did it best I can from memory. What caused his to do this was where the hose connects to the unit there is 3 wires you can see this from the three prongs where it connects. Take off the hatch on the hose with a size 8 Torx driver. once Off you will see three loops of metal and the part that separates will have three contacts with wires leading to the prongs. What happened to his was the middle loop came off and the wire under it had broken free and I suspect shorted to another contact. I soldered the wire back to the ring and shaped it back together holding it with solder. Take the cleaner apart I think you need a 20 or 25 Torx driver to do this. Its tricky and can't remember exactly how to do it without the unit in front of me. What your looking for is a circuit board on the side of the unit. theres two of them you want the bottom one the top one is for power regulation. theres also the one at the top with the LEDs etc don't worry about that. On this board inspect the FUSE its a 250V 3.1A and its soldered in, I replaced it with a 3A since it was all I had. Test it and remember to attach the nozzle back before powering it on. From what I can tell those three metal loops are antennas for the controls on the handle. The one I fixed was a Z88701p I think Australian model.

Thank you very much. It worked. I soldered the rings, but I am not sure they will survive for a long time. Thank you very much. It worked. I soldered the rings, but I am not sure they will survive for a long time.