I had an issue with losing output after 20 minutes. That would vary though but on average, 20 mins. Sometimes an hour. Reboot and rejack the chord and it was good to go. Sometimes just a reboot. Research seem to indicate the removable chip on the board. Black with 22 or so pins. Seemed it could only be had through a authorized Marshall repair shop. Is this still the case or has anyone found an easier way to get a better or newer version of said chip.