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Replacement Parts for iPhone 3GS Backlight IC 109Replacement Parts for iPhone 3GS Backlight IC 109
Did the back light in your iPhone 3GS stop working? The two main reasons for this is a bad LCD or a failed backlight coil. If you've already tried a new lcd but there is still no back light your IC109 has likely failed. Liquid damage is the most common cause of this problem. Many times your iphone will come back to life after getting wet and drying out but over time corrosion builds on the coil/IC and other internal components causing problems.