Replaced LCD, only get a backlight?

Hi,

My Ipad 2 2012 got pretty smashed up, i dismantled and the parts i needed were digitiser, lcd screen, power flex ribbon and headphone jack ribbon (runs from power flex and goes into logic board)

I have put it together and tested it and with the ipad plugged in i can see the backlight, i can also see it working when i try sticking it in dfu mode and recovery mode.

restores will not work as i keep getting errors (21,3194,3004) but it is being recognised by itunes.

does this sound like a hardware issue or software issue?

thanks :)