No Backlight after replacing lcd on 3gs

Discussion in 'iPhone Tips, Help and Troubleshooting' started by jfish1288, Jun 15, 2010.

  1. jfish1288 macrumors newbie

    Jun 15, 2010
    I dropped my phone in the lake. More than 12 hours later I miraculously found it at the bottom of the lake. I figured there was no way that it would ever work again but I had nothing to lose so I left it in a bag of rice for about a week. Then I plugged it up and to my surprise the bright white apple lit up, but I could see that there was still moisture in the lcd screen so I immediately unplugged it and put it back in the rice for another few days. But I decided that it would dry best if I removed the lcd from the digitizer. So I did and in the process managed to crack the lcd slightly, but I figured that if the phowith a litne worked I could live tle crack. A few days go by and I plug the phone into the charger, waited for 30 minutes until the battery had charged enough for it to turn on and the phone worked! I could make calls, text, surf the internet, everything worked except the backlight. The screen was really dim. I tried changing the brightness settings with no luck. So I tried taking it apart and connecting all the ribbon cables again to make sure the were fitted in properly. Still the screen stayed dim. I thought that it was a problem with the lcd, either from the water or when I cracked it. So I decide to invest the $30 it costs to buy a new lcd screen and just replace it. When I put the new lcd in the phone worked almost perfectly fine. The screen was bright and I could adjust the brightness. Phone calls, text messaging, internet, ipod, email, every thing worked fine except the proximity sensors. When I would make a call the screen would not turn off when I put the phone to my face, causing me to press buttons with my face. I figured that the problem was probably due to those sensors being submerged for more than 12 hours but I thought perhaps it was just a bad connection and if I reconnect the ribbons it would start working. So after multiple hours of again having a perfectly functioning iphone (well almost perfectly functioning) I took it apart. When I put it back together the screen was dim. I have taken it apart and put it back together multiple times now to make sure that the connector is plugged in correctly and still I have the dim screen. The screen worked perfectly for hours before I took it apart so I feel that I might have shorted something, but I dont know what. Any ideas/solutions?
  2. iFixYouri macrumors member

    Mar 20, 2010
    When you put it back together, the backlight function probably shorted...unfortunately this can't be fixed.

    We see this more often in the 3Gs, then the 3g

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