Screen Assembly Replacement Ghosting Issues When Closing
I work for a device repair outfit and I've done my fair share of repairs. There are two devices I can never catch a break on. iPods and iPad minis.
Right now at the shop I have a white iPad mini that was cracked and needed to be repaired. I had two different white digitizer replacement screens so I proceeded with the repair. (assuming if one was defective I could just use the other)
I did the whole replacement, no mistakes. Made sure to seat the LCD and digitizer connectors properly. No missing screws, I even replaced the magnets on the corners.
I was just about to close the repair up so I tested the screen to see if everything touched okay. No dead spots. Looks perfect swipes good. Time to close.
I started to close it and after I applied a mild amount of pressure around the home button all !&&* broke loose and the screen started flipping out. Ghosting around like it was possessed.
I failed to see the issue. There were no cables being pinched. It looked like the tens of other ipad minis I've fixed before.
I said. Shoot, well I have this other screen let's try it as well. I proceed to follow all of ifixit's steps in their guide. I get all the way to the last step of closing the ipad. I check the screen. Swipes better than the last screen, very smooth.
I go to seal the edges, and again it flips out. The screen wont swipe and when it does its literally opens random programs, flips between pages, and ghosts like a madman has control over it.
I open the screen just a little, maybe half an inch to release some of the pressure from closing on the digitizer ribbon / home button and it works great again.
I figure I must have been pinching the cable that connects the digitizer and the iPad because that is almost ALWAYS the problem.
unfortunately this is something different. I can clearly see that the ribbon isn't pinched. And this issue is clearly reversible since every time I open it back up it works like a dream.
The problem with its ghosting is, this is only occurs after I completely close the screen. And only when I apply pressure to the bottom near the home button cable.
I have a little bit of protective yellow tape for resisting punctures, tearing over the home button to protect against damaging / shorting the resisters right next to the home button. But other than that its not any different than the other times I've done this repair.
I'm looking for a solution that I might be over looking. Like what would cause such a radical shift from, "works great" to "ghosts like crazy" as soon as the screen is flush with the ipad?
a final note - I think its worth mentioning that I can't replicate the problem if the screen is open. Only when its completely closed. And the device is almost completely unresponsive to touch inputs while its freaking out.
Ist dies eine gute Frage?