Comments on: iPhone 11 No Backlight After DIY Screen Repair https://www.microsoldering.com/iphone-11-no-backlight-after-diy-screen-repair/ Microscopic Board Level Repair Sat, 02 Dec 2023 12:13:39 +0000 hourly 1 https://wordpress.org/?v=6.9.4 By: Technician Rony https://www.microsoldering.com/iphone-11-no-backlight-after-diy-screen-repair/#comment-63673 Sat, 02 Dec 2023 12:13:39 +0000 https://www.microsoldering.com/?p=20811#comment-63673 Boss..
how do I manage the inductor from iPhone 11 lower model iPhone board.
Let me know, I will benefit..!!

]]> By: Jerry https://www.microsoldering.com/iphone-11-no-backlight-after-diy-screen-repair/#comment-44210 Fri, 19 Jun 2020 12:04:18 +0000 https://www.microsoldering.com/?p=20811#comment-44210 Mike, I don’t believe the backlight component to which you refer to as a resistor, it’s an inductor, or coil, and has an inductive reactance (r=2σL) where L is the inductance of the coil typically expressed in mH at 1MHz as a reference. The inductance is necessary to produce the proper drive pulse, (di/dt) for the backlight.

Nice info otherwise!

]]> By: jkb242 https://www.microsoldering.com/iphone-11-no-backlight-after-diy-screen-repair/#comment-44168 Fri, 12 Jun 2020 17:10:09 +0000 https://www.microsoldering.com/?p=20811#comment-44168 Mike, I don’t believe the backlight component to which you refer to as a resistor, it’s an inductor, or coil, and has an inductive reactance (r=2σL) where L is the inductance of the coil typically expressed in mH at 1MHz as a reference. The inductance is necessary to produce the proper drive pulse, (di/dt) for the backlight.

Nice info otherwise!

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