Yeah this ^^^Hard reset it or the screen is bad.
Yea it sounds like it is just not connected to the LCD. I can't emphasize enough thought to be absolutely sure it is not the LCD. Personally, I would not go by two LCDs not working. I would try the replacement LCD in another iPhone 4. If it works there then I would be certain the LCD itself is not defective.When I magnify, what should I be looking for? and how the needle may help?
I don't have the skill to replace the connector, I would need some help from a technician.
Yes, iTunes recognize it, and it take calls normally.
The logic board isn't, per se. But if you have an open socket containing small contacts it's possible something--perhaps a bit of the connector's covering--is blocking the connection.thank you Michael!
Yeah, I was replacing the power button - not the LCD - so the only thing I may have done is to push hard on the flex cable that goes from the LCD to the logic board, but the technician said it was ok. I used some brush to clean the connector, but I have not did a closer inspection.
Only thing that concerns me, is that the logic board that sensitive to debris?
Hi Guy, If you LCD is all good without any damage during disassemble and assemble, probably you just install improperly. As you know, that 2 flex cable is dramatically sensitive even you think it is okay. Try not to reassemble first, just stay all open to and power on the device after you connect that 2 flex cable with hold tightly by your fingers. If it is not working, you may have a chance that your the flex cable is damaged.Funny thing is, same thing happened to me today. I dissasembled my iphone 4 trying to fix the home button not working properly. thing is i made sure every thing was in place but when i finally assembled it, the screen just stays black even tho you can notice the backlight turned on.
I plugged it in and itunes can see my phone correctly and i can hear music from it and watch photos so i guess the mainboard is not f'ed up. so i figured the conection between the lcd screen and the mainboard is not making proper contact even tho i made sure its connected properly (the 5 flex cables on top of the mainboard and the big one at the bottom).
If you guys got some suggestions i'd appreciate them since i live in Argentina and Tech support is Non-existant here for apple products.
PD: more funny stuff: i actually fixed the home button (since i can test it by putting the phone in sleep mode and pressing it so the backlights turn on) but its actually useless since i cant use it right? my luck i guess...