Dear Customer, Each of Our Juicers Has Been Tested before Leaving the. If the Juicer Does Not Work, Please Check the following Questions: 1. Is It Fully Charged (5 Hours before First Use) 2. Whether the Cup Has Been Tightened (after Tightening, the Transparent Part of the Cup Body Should Be Largely Aligned with the Display, Otherwise It Will Be Set to the Empty Cup State and Cannot Be Started) 3. Check Whether the Blade Gets Stuck Because the Fruit Is Too Large. Solution: ① Turn the Machine Upside down, Pour the Fruit Block on the Cup Lid, Wait for the Blade to Rotate, and Then Quickly Shake the Cup to 45 Or 60 Degrees. ② Cut the Fruit into 1*1cm Pieces. 4. Do Not Use When Charging