DS turns on then off - need diagnosis confirmation

Hey, I recently bought a new chassis for my NDL, and I moved my DSL's hardware into it. However, when I turned it on, the green led goes on, the bottom screen flashes white, then the entire thing goes dead. This happens every time I try to turn it on.

After looking it up on the internet, this problem is either: a blown fuse, or: the top screen's LCD connector is damaged.

I'm almost 70 percent sure that it was the LCD connector that was damaged. However, I want to be sure before I start repairs.

I was pretty easy on the motherboard when swapping it out, and I heard that mostly flash cards cause blown fuses, but here's my question:

Is it plausible that sometime during my swapping out the motherboard that my hands could have caused the blown fuse by bumping it or something? Or do Blown fuses only come from bad flash cards?

There are a couple of things that could be wrong.

You could have blown a fuse somehow, or more likely you don't have the top screen inserted all the way.