I did that three days ago. I can send you the PDF that shows step by step how you do it.
You have to buy a el-foil, open the 3000, unscrew some screws, unsolder the old foil and solder on the new e-foil.
You can order it from either
http://www.telesisgear.com/
or
http://www.midi-rakete.de/eng/elfolie.htm
It was not hard, but I had some problems after the installation. Rohan asked me to check if a special chord was properly connected, and it wasn't. So check that all cables are properly connected before you close it.