Banggood Dear customer,  Thank you for placing order in Banggood. We are sorry for the inconvenience. About this product's quality problem, our customer services will connect to you within 24 hours.  Best regards, Banggood team  

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noway Robotech, I got a 3 pack also and none of them showed the characters, until I adjusted the pot on the back and changed the contrast. Then all three worked perfectly.

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