Furby Boom not moving and sleeps in about 20 seconds
I tried change batteries and hard reset.
But that not help.
The furby is paralyzed meaning the small 6V brushless DC motor went wrong. I had the same issue. You can replace it with one from a PC DVD reader (this is the door opener motor). Shaft is smaller but it's ok, diameter is good. You need a solder iron as well to replace electronic part from DC motor.