So I have a 3G with some pixel damage but I can still see the icons. I have tried 3 different LCD screens and most of them just go white. One just shows lines across the screen. I have tried reseting it as well as lifting the logic board from batter prongs. Not sure if there is anything else I can do.
Is this a good question?
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Bruce,
There are two things that you have to check.
1: Connectors. inspect your connectors for dirt, debris or damaged pins. This can cause the screen to display improperly.
2. Which display you bought. I don't know your source for displays, but you have to be 100% sure that they are sending you 3G displays. a 3GS display will fit the connector but will not run correctly. Then given that, you unfortunately have to be sure that you are receiving a quality product. Do you have another phone that you can use to test the "defective" screens with? It's a good way to isolate the problem.
Hope this helps, let us know what you find.
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The only other thing I would like to add to this excellent answer from Phillip is the following. there is a possibility that your firmware does not recognize your new screen"s. Your iPhone NEED's to turn it off completely before you work on it. If your phone turns on prior to restoring it, there is the possibility that the screen will not be recognized, and only the backlight turns on, hence the white screen. I would totally remove the logic board for a couple of days and let it absolutely discharge. Once you have done that, disconnect the #4 cable and tilt the motherboard up so it does not touch the battery. Then connect all the cables for the front display etc. Place the logic board down on the battery, connect the #4 cable and shut down your phone correctly if not already done so. Once you have that accomplished, restart your iPhone in DFU and do a restore of the firmware. Hope I did not forget a step, let us know if it will work for you.
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