Antminer D7 control board is usually a spare aspect for repairing ASIC D7 miner, it really is used to repair and change a faulty control board that isn't operating and dealing thoroughly. Simply clear up the downtime due to the control panel and restore the conventional operation of the miner. https://antminer-controll-boards62840.blog5star.com/37980703/examine-this-report-on-antminer-s19-control-board-schematic