Short circuit? REALLY need help!
I've been trying to put a new screen on my iPhone 4, but during the process something terrible happend. My iPhone wouldnt start anymore so I removed my battery. I noticed an screw underneath my battery..
Did my iPhone short circuit? Cause it won't fireup anymore:S
Is there any else I can do? I tried the battery of my girlfriends iphone, but that didnt work either!
I inserted my battery charger and I hear the sound of charging.. whats wrong?:P
Could it be my LCD screen?
It sounds like it still starts up, but the backlight coil and/or IC is shorted, this usually happens if you do not turn the phone off or do not disconnect the battery
I would look into that possibility by turning it on and checking the screen for a image with a flashlight, keep in mind soldering the IC is a PITA, but the coil is a little easier if you use a heatgun
here is a guide to remove the logicboard to check these chips for visual damage, but remember, they can look fine and still be shorted out, so look with a critical eye, but if they have charring, look into how deep into the chip it is, if it looks to not be so in there, you are probably fine and can replace that IC alone if you can find it, if it's much deeper, remove them and check the condition of the board
It may also be a good idea to check the traces on the board too, those could be the issue too
As to the shields, note where they go when replacing them
Here is the coil and IC, providing these are at fault
If the coil and IC do not work, try a new screen assembly, and if that does not work, something else shorted in the phone too, and will need better info to help
Try a reset, press the top and and home button at the same time, if that doesnt work then disconect tand connect the lcd.
If non of those help, it could be a deffective or damaged lcd, test new screen before putting it back together.
If your phone is off, dont worry about it because it can still be fixed