Control Board for Aladdin L2 30TH ASIC Miner This high quality control board is used to replace and repair a failed Aladdin L2 miner. When your Aladdin miner control board fails, you need to repair the location where the fault was sent in time to reduce downtime losses. But if you can't find out the cause of the failure immediately, it will increase the repair time and lead to lower mining revenue. You can replace the miner control board in time and reduce downtime by replacing the old faulty control board with the spare part of the control board, and then troubleshoot the control board that is not running.