Screen scrolling?

I apologize for re-posting this question, but the previous posts that I've seen about this don't have an answer. This is regarding a back-up camera screen with an N64 mod.

I bought this screen: http://www.ebay.com/itm/261738025408?_t ... EBIDX%3AIT

I have it hooked up to the N64, and the video works - however, it is scrolling vertically. I have tried both a 9V and 7.4V power source and none of the buttons on the back are changing anything (it looks like they just adjust brightness and the like). Is there something that I am doing wrong, or is there another screen that I should buy?
 
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