I just did last month. I got a 20mb SE with a 68020 accelerator installed and was trying to get it apart because the accelerator wasn't seated securely in the slot. I yanked on a connector cable gently at first but it was stuck fast so I pulled it a little harder and it broke free and the momentum slammed my hand into the video board snapping the tip off the tube. Now I have to either get another tube from somewhere or attempt to put the accelerator and hard drive into my 2 floppy SE.