How can I fix Furby's motion detector?
When you reset Furby he just goes into sleep mode and will not wake up until he is reset again.
Furby was a popular electronic robotic toy resembling a hamster/owl-like creature which went through a period of being a "must-have" toy following its launch in the holiday season of 1998, with continual sales until 2000. Furbies sold 1.8 million units in 1998, 14 million units in 1999, and altogether in its three years of original production, Furbies sold over 40 million units.
not sure if you have a furby with a tongue but...according to the Furby hospital this procedure may work.
hold down tongue
turn furby upside down
shake furby a bit
turn right side up and release tongue.
You may have to hold tongue longer or try again. Just be gentle.
The only thing close to a motion detector circuit would be the Light sensor photocell in Furby's forehead. I would start on that one and see if it is still functioning. For way more info on the Furby, check this site. It has great information and plenty of autopsy pics. Attached is the diagram for the Furby's electronics. Hope this helps, good luck.