Following events will void the warranty: A. Customer removes/replaces any components by himself without receiving permission from Bitmain first; B. Damage caused by poor power supply, lightning or voltage surges; C. Burnt parts on hash boards or chips; D. Miner/boards/components damage due to water immersion or corrosion due to wet environment. 5. For all repairs or RMA, within warranty or not, customer must return the defective parts at his/her own expense after opening a support ticket and troubleshooting with Bitmain's instructions. 6. Bitmain will cover shipping cost when shipping a replacement unit within the warranty period. 7. If you notice there are some loose heatsinks when you receive the miner, please inform us by email within 3 days from the date the package is received according to UPS/DHL/FEDEX's website. 8. Bitmain does not take any responsibility for or compensate for any loss as result of downtime caused by delays in transportation as a result of custom formalities or other reasons.