Comments on: iPhone 6S No Backlight Repair

By: richard dodson

richard dodson — Sun, 26 Jan 2020 07:29:41 +0000

i have a iPhone 6s no display and no backlight the backlight filter seems to be good diode seems to be good and replaced the chestnut but number 3 pin on j4200 still reads open line and i do not have zxw because i have a mac computer so i can not trace where the power comes from i will be getting zxw as soon as i can get a windows lab top

By: Tamia

Tamia — Sun, 25 Aug 2019 00:54:14 +0000

Would I be able to send in my phone to have it repaired? The backlight is fried and if so how much would it cost

By: emre

emre — Tue, 30 Jul 2019 01:34:36 +0000

Why is it called “no backlight” ? i have same issue but flashlight on the back is working. Only no screen. I unplugged first battery cable, and then screen cables but when i try to reconnect, i felt burn smoke for a second. After that i have this issue. Itunes recognize and i have sounds from phone, but no screen. So this is “no backlight” issue and need to reopair mainboard? Screen replacement won’t work?

By: Edis

Edis — Tue, 31 Oct 2017 17:32:57 +0000

Ok i have a qwestion sorry my englis is not my main
I have a blown fuse the uper 1 but the contact is also blown so i cant jump it and i wuld lime to k ow where can i jum it elswhere

By: Craig Taylor

Craig Taylor — Wed, 27 Sep 2017 08:30:29 +0000

In reply to Michael Huie. Thank you very much. Hugely appreciate the tip. Just to confirm, you're referring to the pins on J4200?

By: Michael Huie

Michael Huie — Tue, 26 Sep 2017 16:25:43 +0000

In reply to Craig Taylor. check diode mode for the top six pins starting from the left and the three backlight pins to find your fault.

By: Craig Taylor

Craig Taylor — Tue, 26 Sep 2017 14:43:57 +0000

I have a backlight issue after a screen replacement. Mine is slightly different though. If the battery runs out on the phone and I press the power button the screen lights up with the ‘connect charger’ symbol. If I plug it in the battery symbol shows up fine, the screen looks perfect. Once the phone turns itself on the screen goes black. If i hit the power button the screen will flicker on for half a second then go black again. This is the only time it will flicker on and to recreate the effect I have to wait till the battery is dead again.

This is still clearly a backlight issue but with different symptoms. What would be your suggestion?
I have ordered an FL4211 filter anyway and plan to replace it using my SMD rework station but do you think it could be another issue?

By: Michael Huie

Michael Huie — Tue, 19 Sep 2017 12:42:25 +0000

In reply to cj.

Please see prices here: https://www.microsoldering.com/request-a-quote/

By: cj

cj — Tue, 19 Sep 2017 08:59:35 +0000

i got that same problem eveyrhting works but you have to put a flashlight to see eveerything..filter you said? how much would that cost?? email me please cjconcepcion2017@icloud.com

By: Michael Huie

Michael Huie — Sun, 17 Sep 2017 15:49:00 +0000

In reply to John. You'll need to send it in.