A board for an iPhone its quite expensive dude, i recommend you to buy a new one instead fixing it because you'll spend a lot of money and i'ts not guaranteed that its gonna work all fine... Its my point of view. Good luck!!!
Mmm.. It can't be the Dock connector, it must to be a slack screw, make sure the board is fastened by all the screws, if its not, wash it it isophropylical alcohol, but its definitively not the dock conector. :D
Go to the camera settings and turn of the macro option, that-s why the red led turns ona, its a preliminar led that allows you to take the picture with a better angule, or turn itto automatic, that way it will turns on only in dark places,
Dude, i had the same problem with mine, its just an adjustment issue, dissasemble it over and make sure both screws that goes at the side of the batery and the vibrator are in there or if they're well attached to the case, if it is still not working, the vibrator must to be burned, that was my problem, i did the same than you, replaced all the external pieces and i dont know why it stoped working after 3 days. You must replace it right away to keep your girl! :) Good Luck dude!
Hello!! Well it seems like a earphone issue, first dissamsemble it and check if the flex cable is well conected to the board. But first.. does the screen turns off when you aim the phone to answer or make a call????
Try connecting it to your mac or mic pc and see if iTunes recognize it, it it does, restore it inmediatley. That's a sw issue, i had it with my 3g iPhone once, i had to restore it to factory settings. The only problem is that your gonna loose the music, photos and games you got installed on it. Pitifully there's not a software yet that allows you make a backup of all the data that is in your iPod. I hope someone desing one soon! Hope to be hlpfull!!! Greetings!!!