I have found out that you don't have to find the original type of lock switch to replace the initial one. Although i built an A3000T replica based on an A1200, a felow Amigan asked me to send him a switch like the one i used, and he replaced the original with that one. And it worked!
By the way, you can see my replica project here:
http://www.amibay.com/showthread.php?5456-A3000T-front-panelSome pictures don't appear, i could only redirect so many from photobucket to postimg today... But the ones about the lock switch and panel are ok now.