Hi,
I had similary problem with my CD5500, see my post here:
http://forum.beoworld.org/forums/thread/79685.aspx
However since then it have started to missbehave again :(, not as bad since before but sometimes it closes too fast. All i did was touch the 90S1 jumperswitch as i describe in above post but its no permanent or even sure fix tho :(
Cheers
Jesper L / Sweden (with no magic fingers)