GSM Shop GSM Shop
GSM-Forum  

Welcome to the GSM-Forum forums.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features.
Only registered members may post questions, contact other members or search our database of over 8 million posts.

Registration is fast, simple and absolutely free so please - Click to REGISTER!

If you have any problems with the registration process or your account login, please contact contact us .

Go Back   GSM-Forum > GSM & CDMA Phones / Tablets Software & Hardware Area > iPhone ,iPod & iPad (Apple Inc. Products) > iPhone, iPad, iPod Hardware Repair

iPhone, iPad, iPod Hardware Repair Hardware Repair discussions for iPhone, iPod , iPad & Apple Products, help, guides.

Reply
 
LinkBack Thread Tools Display Modes
Old 01-23-2017, 00:32   #1 (permalink)
HUM
No Life Poster
 
HUM's Avatar
 
Join Date: Jul 2005
Location: karachi
Posts: 8,673
Member: 161728
Status: Offline
Sonork: 100.1582708
Thanks Meter: 2,237
iphone 6 backlight on but no display


iphone 6 backlight ok but no display

it show display when i change u2 ic
before changing u2 having same problem
now again same problem comes

now when i power on it show backlight but no display and seems after fews seconds it turn off

set was previously water damaged
  Reply With Quote
The Following User Says Thank You to HUM For This Useful Post:
Old 01-23-2017, 02:39   #2 (permalink)
HUM
No Life Poster
 
HUM's Avatar
 
Join Date: Jul 2005
Location: karachi
Posts: 8,673
Member: 161728
Status: Offline
Sonork: 100.1582708
Thanks Meter: 2,237
any solution mates...........?
  Reply With Quote
Old 01-23-2017, 02:49   #3 (permalink)
HUM
No Life Poster
 
HUM's Avatar
 
Join Date: Jul 2005
Location: karachi
Posts: 8,673
Member: 161728
Status: Offline
Sonork: 100.1582708
Thanks Meter: 2,237
in this picture

u2 ic named as display ic

http://i.imgur.com/Hf67czY.png
  Reply With Quote
Old 01-30-2017, 09:43   #4 (permalink)
HUM
No Life Poster
 
HUM's Avatar
 
Join Date: Jul 2005
Location: karachi
Posts: 8,673
Member: 161728
Status: Offline
Sonork: 100.1582708
Thanks Meter: 2,237
after change u2 ic it show lcd and working just for few minutes and again same issue......?
  Reply With Quote
Old 08-20-2017, 03:56   #5 (permalink)
Junior Member
 
Join Date: Mar 2017
Location: Indiana
Posts: 6
Member: 2697339
Status: Offline
Thanks Meter: 2
Iphone 6 Backlight works but no Image

Did you ever figure yours out?



I have an Iphone 6 that was experiencing ghost touch. I replaced meson and cumulus after testing a known good LCD and no change in symptom. I changed both again to make sure there was no mistakes and still no change. I began testing voltages with screen attached when I noticed home button would not work... So I powered down, resat the connectors and when I powered back up again, I have a backlight but black screen. I tested with another lcd and same thing on it. It draws power, charges battery, Itunes sees it, just no image.
I changed Chestnut,
Getting the following:
Caps are all testing good, Filters are all testing good
BL Coil is 1, Diode is .204, resistance to ground is .507
VCC_Main = 4.2
FL2035 and FL2036 are good
C1501 = 3.8
C1529 and C1502 = 6v
L1500 (1 and 2) = 4.2
PP5V7... = 5.7
PN5V7... = -5.7
PP1V8...= 1.8
However, PP16V5_Mesa is only at 00.2 and 3.3 missing on Tristar is the only things that I can find that do not test out ok
I was able to restore on Itunes without errors... Everything looks good except I have a Backlight with no image, tested with other LCD's
any ideas?
  Reply With Quote
Old 08-21-2017, 12:18   #6 (permalink)
Freak Poster
 
Join Date: Sep 2010
Location: ČR
Posts: 132
Member: 1388158
Status: Offline
Thanks Meter: 30
Rebal touch ic U2402. Nex step Reba U2401.
  Reply With Quote
The Following User Says Thank You to Tony2323 For This Useful Post:
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


 



All times are GMT +1. The time now is 13:42.



Powered by Searchlight © 2024 Axivo Inc.
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.
- GSM Hosting Ltd. - 1999-2023 -
Page generated in 0.12170 seconds with 8 queries

SEO by vBSEO