GramKrackr

So I ordered a few of the SVIP just based on the price I was able to get. I have 5 units all bad, they work than the screen goes all pixelized than shut off. Than will work again and do the same, 5 units all same exact issue. I have to send them all back, and cigreen is saying bad chips, I have over 60 DNA200s for the my company from all different manufacturers with absolutely 0 issues, I own 7 myself personally. Is there anything that may be directly causing this, a fix or a known issue so I don't have to fight to get them all the way back and credit or new ones. Thanks in advance!