I would contact firstname.lastname@example.org to have them troubleshoot the issue. Please provide them with the serial number of the unit and a description of the problem. How long ago did you purchase this unit? If it’s less than a year ago and they determine it’s faulty hardware, Eventide will cover the repair. If not, there will be repair costs. If this was a recent purchase and you’re within your return period, it would be good to have the dealer test this for you and provide an exchange.