LCD not working after replacing touchscreen
I have a 3GS (white) which the touchscreen was broken but the LCD was worikng normally. I've decided to buy a new touchscreen with the home button included to simplify the replacement.
I've just replaced it and the when I turn it on the screen shows just a little bit of light, but nothing more.
I have another 3GS (black) so I've tried to switch Touchscreen+LCD from one to another and the replaced one works perfectly in the iphone (black), and the original touchscreen+LCD give me the same problem in the (White) iphone.
By this I assume that something happened with the board of the (white). What can I do now? Many thanks in advance for your help
Is this a good question?