Hello to all. While vacuuming up pine needles after Christmas, I had forgotten about the internal filter, for whatever reason. This resulted in needles getting into the vents. It was my own stupidity and not a guarantee. I then carefully opened it up and freed the suction cup from the needles. When it was open, it still worked. Closed again, no more sound, but the light that flashes alternately green and red when the switch is in the "on" position.... So there is still contact, otherwise the vacuum cleaner would be completely dead. What have I done wrong? Does anyone know about this flashing and how should I treat it? Thanks for any tips. Otherwise, I'm afraid I'll have to get a new vacuum cleaner, because I'm actually very happy with the little power unit...