What is the correct backlight coil for iPhone 4 CDMA version?
I have an iPhone 4, 16GB, CDMA version which has lost its backlight after water immersion. I got iTunes to recognize after cleaning, but realized that the LCD/digitizer is toast, after replacement, and still nothing on screen I figured the backlight coil maybe IC was damaged. I believe I have correctly identified their location because I was able to swap the IC for one off an old 3Gs (a tad larger) and got my screen back! But no backlight :(
Can someone verify I have identified the correct coil? Also can someone verify the coil and IC are the same in CDMA and GSM before I buy a set? I have not found much data online about the CDMA version iPhone 4 or backlight IC and coil swaps.
Thank you for any guidance.
New IC and coil didn't work
Ohh dear, back to the old drawing board. The IC and coil change did not improve the backlight situaiton. The iPhone's backlight is still not working correctly, I can see if I hold it under a light and I know it's loading into iTunes. What else is possibly wrong? I realized several other coils look like they might have had some water evap and maybe burns?
Maybe try swapping them? Any further suggestions, I'm finding the CDMA iPhone or at least this one a bit more challenging to track down problems, but what else are weekends for. ; )
Oh I see you used the coil 6R8 from the 3GS but not the backlight, but not the backlight IC 109B from the 3GS. I have not worked on the CDMA so anything I tell you, is just speculation. What I would do is to replace the coil and IC \from the CDMA with a coil and IC of a GSM. They are readily available and much closer related to the circuitry of the CDMA than the 3GS.
The iPhone 4 on verizon is the GSM verson with CDMA chips and basebad, there shold be no diffrence
Here is the backlight coil and backlight IC in a bundle too
I do not think there should be a diffrence
as oldturkey03 says(and I have the same thought, i did before) is the coil is swappable with GSM, not sure about backlight IC
Sometimes the IC survives, start with the coil only and then change the IC if needed