Chosen Solution

My iPhone recently got water-damaged. I took it to someone who cleaned it out and replaced the battery, but the backlight doesn’t seem to work. Now, when I plug it into my computer, it says “connect to iTunes,” but because of the password I had on my phone, iTunes can’t do a system recovery. Can anybody help me fix my phone?

When you say the backlight doesn’t seem to work, do you mean you can faintly see images, or there is nothing on the screen at all? If you can faintly see images, try shining a flashlight laterally across the screen and enter your password. If you can see nothing, first check to make sure the display assembly was actually plugged in when the repair was made. You can do this with our Display Assembly repair guide. If the 3 cables are indeed plugged in but there is nothing on the screen, you must replace the display assembly. Good luck!

Hi guy’s here’s fix for iPhone 3GS no light solution. No light fix for iPhone 3GS

I had the same problem. My phone got dropped in water and after drying everything worked except the screen was dim (no brightness). I replaced the cheap LCD part and wallah it works now. I don’t think this a coil issue as mentioned by one poster here (at least with mine it wasn’t). Good luck +Amit

iPhone 3GS (that I know of) do not always required a replaced LCD to fix the back light. There is a coil called the 6r8 coil that is an extremely small component on the logic board, that tends to break, and requires re-soldering to fix. Other than this and on most other versions I am sure a simply LCD replace MAY fix the problem, although I have just started fixing mobile phones, so I am not 100% as of yet on everything. Good luck

Coil can check it by Ohm meter on buzzer celective or how many MΩ is. But whe you listen the buzzer sound’s that means that coil it work’s perfect!!! So the myth arround (change or remove that coil) is not true!!! That 80% have problem and is that you have to change is the voltage regulator IC 109B. Have a nice day! Loukas Electronics engineer

Loukas, what buzzer do you refer to?