Don't know but our Matsui did that,look around the rim where the lid meets the main unit,you may find a micro switch that pops up when the lid it opened(it will be very small)sometimes they don't pop up,use a stiff card or similar(long nails)and see if it pushes down and pops up easily,it will probably stop the disc in the down position,work it a few times and it might come on.Nothing to loose by it,you can always relist.Good luck.
r, October 2011
