Goldshell LT5 Pro hash boards are used to repair and replace non-running or low hashrate miner boards. If your Goldshell LT5 Pro miner is not working properly, you can first consider whether the hash board is faulty. Timely replacement of faulty LT5 Pro hash boards reduces downtime and losses and increases mining revenue. All products are strictly inspected before shipment to ensure that the products can work properly.