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After sales support

Please refer to the FAQ as follows if you have any question about our products

Work in process.

If the FAQ does not resolve your problem, please contact our sales person you connected with when you bought our product.

More information:
nnosilicon A4 Dominator have 45 days parts Warranty (Counting upon miner arrival, Free repair services).

The warranty expires in the following cases:
  • Miner itself is demolished, privately altered or component replacement;
  • Lightning, voltage surges, poor quality power supply causes damage;
  • Circuit boards and components are filled with water, exposed to moisture or corroded;
  • The circuit board or the chip is burned;
  • Over clocking.

If this happens, services of miner maintenance will be charged. For the specific procedures, please refer to the post-sales process.

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