So i'm replaceing a screen for a toshiba satellite s875d. It's my first time doing it but was quite simple. Only problem is that the screen is not working, it's just black. Now i'm doing this for someone else and they ordered the screen. The dimensions of the screen are identical, in fact it seems like the right screen. The numbers don't match on the back of it but i suspect they wouldn't as it's an after market replacement. There is only one connector on the old, same as the new one. But when i turn it on the laptop powers on but screen stays black. Iv'e put the old one back in and it woks fine except cracked. Re-connected the new one again but nothing. I'm pretty sure i'm doing it right. Also when i put it in the battery was disconnected. So there was no power to the laptop so i didn't damage it.