Often after replacement of the LCD and digitizer.    iPad can develop with lcd lights up in the back only black with faint black and gray lines now. Everything else functions besides screen image. You can still navigate through the digitizer. You just can’t see anything but colored lines.  known good LCD and get colored lines or gray ones.  This is a Logicboard damage on the image lcd track.

Only mail in your logic board!!  Or with the back frame if you are not comfortable to separate logicboard.We do not preform sealing or glue of the iphone, ipad, or replace broken glass.   There is 30$ extra service charge when you mail us a whole sealed ipad with lcd and glass.

This Repair is for ipad logicboard with bluelines and no Image Dark screen but you can see backlight from behind the lcd screen, and your ipad syc with USB to computer.

What happen is the image filter and Image IC can get short out, which need to be replace.