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7.9 inch display / Model A1432 / Available in black or white / Announced October 23rd, 2012 / 16, 32, or 64 GB capacity

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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.

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I actually have an update. After trying numerous things I found out the issue was the two little pads that rest on the bottom of the LCD (not the back)..

every time I tried to close the ipad mini they would create a fair amount of pressure on the LCD and mess with the touch sensor diodes. The result was crazy random movements.

So I just removed them and it worked. I may never replace them on an ipad mini again.

They serve little to no purpose and only infuriate me.

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Are these the pads which cover the screws? As the after market digitiser are slightly thicker I think, so this would make sense, I've got one that's freaking out, abd I've not had one do this for over a year!

Do you have any pictures of this?

por

Not the pads covering the screws. The pads at the bottom of the LCD.

http://i.imgur.com/PLxO1Xr.jpg?1

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This just worked for me!!!! It was the pads on the LCD. Thanks!!!!

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You need to grab the original digitiser, and put them side by side. You'll notice alongbthe bottom on the original is some black tape covering the the entire width just below the clear part of the glass. And also, the home button flex has small gold contacts, these also need covering as they touch the frame and cause all sorts of crazy stuff to happen.

If you still have problems after this, I have noticed something else which no one has mentioned

When the digitiser is unclipped from the board, and the ic connector is remived from the adhesive on the frame, if the small black rubbery tape bit gets removed, this needs to transferred over, as all the little solder joints I believe touch the frame and freak it out too. If you dont have any of this, then normal insulation tape will work, but this is very sticky and have to be careful if you need to remove it again.

Hope this helps

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i have had this problem on my iphone 5 for the last few weeks it is the most annoying thing ever, i have tried 2 screen replacements and there is nothing i can do and thick off that will fix it, i do not want to replace it as i know it is something very simple, but it just will not stop ghosting, the safari app 3 from the left on the bottom is the main app which keeps opening randomly, and the letter 'B' goes crazy when typing. i have tried covering around the 2 gold circle connectors for the home button but there is nothing i can do as i can not cover this as it is needed for the home button to work? most annoying problem ever if it happens to you :/

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Ryan, did you try a factory restore?

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You checked the digitiser connection on the phone to check if anything is bridging contacts together?

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Hello, This is Pedro Gamboa general manager at Experimac NW Houston. we do buy sell trade repair apple products. If you are interested in working for us just let us know. Anyways, the problem you are having is most likely to be magnetic interference. Right next to the home button you will see a gold string that look like 4 semi-square dots. When that makes contact with metal it makes the magnetic interference creating the ghosting.

Solution: Put a little black tape on the gold part to avoid making that interference. You can find that little tape on a new replacement part. Most techs make the mistake of taking it out believing it needs to be taken out when it actually needs to stay on.

Try that and I am almost sure it will work. If it doesn't then you have a bad digitizer or you need a soft reset. iPad minis are still a big mystery because of their infinite issues.

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I had the same issue on an IPad 3. after I removed the screen to inspect it, I had found that I pinched the ribbon for the digitizer when installing causing a small tear. So I had to throw a new screen on it. Works like a champ!

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