iPad 2 NAND error problem

Hello, I've had problem with an iPad 2 I've replaced the touch screen on, I've had to send it off to have the backlight fixed, but now I have a nand error, the problems just keep coming.

Anyway I was wondering if there was anything I could do? Any tips or help would be greatful. There is a broken diode or chip on the board but can't find a replacement and didn't know what I was looking for, I've added some pictures