Does coil replace can fix the backlight issue of iphone 3gs

[Munishi3]

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I am having problem of Backlight subsequent to replacing 6R8 coil. What is Problem through additional 7 iPhone3Gs with the intention of not working subsequent to replace 6R8 Coil. Not be able to understand this. I utilized numerous Coils commencing from 2 dissimilar Shop. The entire not working. Have at present 8 iPhone 3Gs through Backlight Problem. I had worked three days on one phone through this predicament. Changed 3 times coils the innovative was actually defect. Other than then I go to the menu and slide ruler for brightness to upper limit.

[Sawan123]

Generally this ic goes not scratched. Create measurement in this neighborhood approximately 6r8 coil utilize this as orientation measurement-positions-pmic-3gs-a number of-hints-1212286/ this ic 109 is straight right side commencing from 6r8 coil beneath PMIC ic. I eliminated it through hotair, with iron not probable I imagine Many times, my technicians encompass replaced backlight coils inappropriately. And told me with the intention of it is the IC. When I create them position another backlight coil in the entire in excess off again, the majority of the times it works. In addition, commencing from time to time the replacement backlight coils them faulty.

[Alejandro80]

I have a predicament; I have 3Gs the backlight not working properly. I misrepresented 6R8 coil and black IC near it. At present backlight is extremely bright. When position in iphone in menu backlight on minimum iphone lcd become extremely hot subsequent to 2-3 minutes, I changed one additional time coil - no effect. I imagine might by position a number of resistors on 1 leg of ic and subsequent to position wire to 3 leg of lcd connector. Make sure continuity through your multimeter first commencing from the 109B IC to the connector. The applicable pin on the top connector is the 2nd pin commencing from the right.

[Karleen]

I am in addition having a 3GS backlight predicament. I replaced the 6R8 coil, even although the innovative coil deliberates a dc impedance not open, and so I take for granted not bad. So I take for granted the ic109 is working appropriately. There are a small number of things to facilitate do not measure appropriately. The crystal measures merely 0.5V as an alternative of 1 V, and the capacitors to the right of the apple chip, the top 2 determine 4 V per the topic beneath, excluding the bottom 2 measure 0V as an alternative of 5 V per the topic beneath. Anybody have several thoughts as to what else I might give the impression of being at replacing.

[Farrah]

My friend has a 3gs through no backlight subsequent to water damage. I cleaned up 6r8 other than no change until I endeavor given each side a push on the copper. Somehow it came back to life excluding this was short lived as 24hrs afterward the screen went back to dim I have eliminated 6r8 and soldered 2 wires prepared for when the replacement turns up excluding subsequent to reading on here regarding the 109b etc I tried something else to create certain this time it was actually the coil that has died I opened up my 3gs by means of it switched off and position it subsequently to the my friends dim iphone then took the 2 wires commencing from his phone and held them on my 6r8 coil the backlight flashed back to life.

[Acolapissa]

I got my 6r8 commencing from ebay today and let me give you the entire a number of advice. Do not utilize wires. The whole thing I have encompassed and read on the repair said to utilize wires other than these coils are completed to be soldered to a pcb not a wire witch shifts regarding. If you give the impression of being at the coil each pad is associated to a ultra thin wire commencing from the coil witch determine to snap if its shifted so yes I had my backlight working then taped down the wires and wrecked up assassination £8 on ebay when the stress of the wires insolvent the pads off the coil!