iPhone 4 Screen is unresponsive after replacement

iPhone 4 Screen is unresponsive after replacement I recently replaced my touchscreen on my iPhone 4 following the guide on here since it was dropped and the glass was cracked. After it's been replaced the LCD works but the touch sensor doesn't work. Is there any reason for this to happen?
Asked by: Guest \| Views: 191

Total answers/comments: 5

Comments display order:

Guest [Entry]

The ribbon cables for the LCD and touch screen can be bent or torn easily, so the cables could be damaged and you couldn't tell. I would try another LCD and be very careful not to bend or tear the cables.

Guest [Entry]

Mine did the exact same thing. I am worried that the problem was in reconnecting the cables that I might have damaged the actual connector or the cable as I had initially accidentally had part of one of the display cables folded under the logic board. Also, the screen warps with pressure around the edges. The screen is completely unresponsive only on one side.

Guest [Entry]

"Hey guys,

I just got an iPhone 4S with a completely irresponsive digitizer in. I replaced the screen with no result. Tested multiple screens with a testing cable and without the testing cable without any result. If I look at the screen connectors on the logic board I see no damage to the connectors with a loupe (8x) nor did the screen start to work after cleaning with isopropyl alcohol. Any thoughts what could be the problem. Tried a software restore and reset already."

Guest [Entry]

Boomvalk does all the screens work in another phone? It's possible the touch chip on the motherboard have went faulty

Guest [Entry]

Yes I tested the screens b4 and they should be fine. Can I temporarily fix it like the audio-IC chip by putting some pressure on the chip And put the protection sheet back on? Do you know where the chip is located in a 4S?