Hi! I have nearly successfully used RUMBA for a week now on my printer but I have some problems with missing steps on the Y-axis that I wanted to solve. Since I have (with tests) ruled out overheating of both stepper and motor and also to low current (the y-axis is strong) I thought I will test change to use like E2 place and stepper instead of Y and modified the firmware pins for that. However, when I connected the USB cable I could not connect to RUMBA. (After the initial setup I have only used SD-card printing with help of lcd and not connected the computer). I checked the board and realized that one component is burned that I probably need for succesful USB-connection. (I'm guessing it has been burned because of some ground-issues between the external 24V power supply and my laptop that also was plugged into the wall). I would like to know which component it is so I can replace it:. Didn't have a camera good enough to take a photo but I have marked the component on the wiki picture: (On my card, this component is now in two pieces with burn marks around) My guess is L1 from the schematics but I don't have any values for it?