touch screen not working at all
I inherited a nice Ipad Air spacial gray to repair. It looks great! the only problem is that the Touch screen is not responding at all. I removed the digitizer and I can say that it's the original one! never been changed as it was really a long and hard task even with my hot air station. (don't know which tape Apple uses but it's a good one!).
As I have a touch screen for the same model in reserve I changed it although I was almost sure of the result. And I was not deceived: still the same issue!
So it's a problem directly linked to the motherboard. Doing some request on Google I found the possibility that it could involve 2 quartz located on the mainboard just near the 2 digitizer connectors (why 2? one for vertical move & one for horizontal?)
Before I eventually buy a pair of these one did somebody encountered the same issue and how it was solved?
Thanks for your answers
Mise à jour (01/07/2016)
I finaly came back to this Ipad issue and decided to remove the Emi shield that protects the 2 Broadcom touch screen controllers . Then I tried to use my hot air solder with to apply hot air (250°) for 5 minutes.
Then after all got cold I reassembled the LCD + Touch screen and believe it or not but it worked.... for some hours only ! :(.
Strange thing: all looks like the hot air put back to life these controllers but only for a short while!
I tried again the day after , but this time , it was unsuccessful.
Probably this proves that these controllers have to be changed. I don't know exactly how they work (why 2 controllers? )
If somebody experienced such issue, I would be grateful to have some more info