sliding keyboard cover stuck open
I have a Technics sx-PX224/M that my nephew just returned to me. While in his possession, he somehow managed to get the sliding keyboard cover stuck in the open position. I can see that the little white "gears" are in their tracks, but the front edge of the cover is about half way up inside the piano, and I cannot pull it down. I have looked and cannot see that it is hung up on anything. The piano still functions well, but I would like to be able to cover the keys when I am not using it. Has anyone ever had this problem with their piano? If so, any help would be much appreciated. Thank you.