Had a nice morning gift....no USB comms on the RUMBA. Two computers would not recognize the port and BOTH of the RX/TX lights were locked on solid. Ok, either firmware crash or 16U2 went toes up. Me not happy as I have just about finished dialing it in.
Went surfing and found many others with the same issue. Most were getting their boards replaced. So, easiest thing to do is reflash first and see if that works. Went to [
reprap.org] and at the bottom of the page was the instructions on how to reflash the 16U2. Followed the process, software loading was validated, powered down, put jumpers back and powered up. VIOLA!!!
If it does it again, then I would consider it to be a flaky 16U2 but I will keep this in the back of my head.
