Wyatt Earp

The failures you've described are not being caused by external issues. It is possible that a number of boards were constructed with sub-par components, and/or improperly formatted. The fact that the boards are no longer covered under warranty, is a positive indication that there is an issue with the design, and/or propritary components. I'm on my 3rd replacement DNA75C board. Evolv did the last replacement at no-charge, but future board replacements will come at a cost. I assume so anyway...