I replaced the LCD on my iPhone 3Gs, HELP!!!

Discussion in 'iPhone Tips, Help and Troubleshooting' started by matuin, Nov 7, 2010.

  1. matuin macrumors newbie

    Apr 26, 2009
    I replaced the LCD on my iPhone 3Gs and it turn's on and everything seems to work fine, except now the backlight doesn't seem to work. I can see the screen in direct light but otherwise no go. I tried adjusting the brightness in "settings," no change. I restored it, no change. Suggestions?
  2. cujoca macrumors regular

    Jul 24, 2006
  3. lucifiel macrumors 6502a


    Nov 7, 2009
    In your basement
    Two preliminary checks:

    1) Is your LCD screen designed for 3GS, if you use a 3G LCD screen you will get issues.

    2) Are all 3 ribbon cables attached properly and securly? especially the clamp down switch?
  4. iRepair macrumors newbie


    Nov 17, 2010
    Orange County, CA
    In my experience there are 2 possible causes to this issue: [1] the iPhone has been damaged by liquid or humidity. In this case you can replace the screen over and over but it won't do any good. [2] You purchased a low grade copy LCD display.

    In either case ensure that the #1 connector is free of dust and is firmly clicked into place as this is the LCD display's connector into the logic board.

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