Digitizer/Screen not working after replacement
My 4s had stopped working for phone calls and had a non-working power button and a broken screen. I purchased a power button mic assembly, dock connector and digitiser and set about replacing them all in one go, all seems to be good except for the digitiser. Here's how it went:
I got as far as putting the logic board back in and noticed that one of the ribbons from the display was not sticking out far enough and so had to take it all to bits again to see what the problem was. When I had re-stripped out the logic board, speaker assembly, vibrator etc. I could see that the digitizer cable from the new screen was slightly folded, which accounted for it's shortness. I unfolded it and put the whole thing back together, , however when I finally got the case back on and powered up I found that the screen didn't work at all. I had sucessfully fixed the power button and dock connector, as both of those work just fine, but not response from from the touch-screen at all. So I re-openen the case and re-seated the two ribbons for the digitiser and screen data, which went on satisfactorily enough I thought, but having put it all back together again still nothing from the touch screen.
If anybody has any suggestions for something else I could check I'd be very appreciative.
Is this a good question?