I agree with E-HP. I'd try connecting and reconnecting everything, jiggling the screen and connectors, and if that fails, i'm betting you don't have electronics diagnostic equipment on hand, so it'd be a good idea to order a new screen, and if that doesn't work, you probably need a new controller too.
Hoping for you that this is not a cheap fly by night brand that supports it's products by providing replacement parts.
We are mostly a DIY builder forum so if you asked a question about a common DIY part, it'd be easier to get an answer out of us.