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Repair information and guides for the iPhone 6 that was released on September 19, 2014. Model Numbers: A1549, A1586, and A1589

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Flickering backlight after rebuilding backlight circuit

I replaced the diode, the driver, and the three capacitors. I had to run a jumper from the diode to the pad under the driver because I lifted the pad. Any ideas why im getting a weak and flickering backlight?

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Did ya check the filters? Also maybe double check your jump?

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6 Comments:

Ill check the filters, but would it work at all if the jumper wasnt connected?

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And how should i check the filters? Continuity.. resistance? Im fairly new at this haha

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I'm gonna call in the calvalry @refectio

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Why did you change the three capacitors?

My first suspicion is a bad connection on the jumper, underneath the driver. You'll also want to check FL2024/FL2025/FL2026. They should measure as a dead short. I would also probe the voltages on the circuit to insure everything is okay.

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I changed the three because one of them was short to ground. I dont have the schematic in front of me, but i think we are talking about the same three? What voltage should i be getting?

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Garrison Babbitt will be eternally grateful.
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