ToqAN Fixes Android 5.0 Notification Bug on Qualcomm Toq

The Qualcomm Toq is probably one of the lesser known smartwatches on the market … more

How to Root and Unlock the Google Nexus 6 on a Mac – XDA TV

In the past, XDA Developer TV Producer droidmodd3rx has shown you how to … more

Set Up Your MediaTek Device with Comprehensive Beginner’s Guide

As can be seen with the use of MediaTek chips in Android One devices … more

Sony Updates AOSP Sources to Android 5.0.1

Just a few days ago, Sony did an utterly fantastic job by pushing out numerous device trees for … more

Welcome to XDA

Search to go directly to your device's forum

Register an account

Unlock full posting privileges

Ask a question

No registration required
Post Reply

[Q] Screen remains Black although Device still boots?

OP soundl3ss

4th July 2014, 01:10 AM   |  #1  
OP Junior Member
Thanks Meter: 1
 
2 posts
Join Date:Joined: Jul 2014
Hey Xda,
I'm certainly not a newbie to flashing/modding but this one puzzles me quite a bit:
Today I got a Galaxy Note from a good friend of mine, the device is still running on stock ROM and has never been rooted.
When I try to boot up the device you'll hear the usual boot sound and after a while the softkeys backlights will light up, while the screen won't. My friend reported to me that he had issues in the past connecting the device to any given windows PC, as they won't even recognize the device. I however can't verify this as I'm using arch Linux on almost all of my workstations.
The main objectives are:
- backing up the entire internal storage, because my friend produces music and there are lots of samples/unfinished tracks on this device
-eventually get this device working again.
The main problem is deciding whether the device has defective hardware or just somehow screwed up firmware.
The gameplan so far is backing the device up via adb if nothing else is working and then reflash the whole damn thing, if there is still no improvement I guess the hardware is to blame.
Any constructive advices on your end? It would be much appreciated as this seems to be a fairly common problem. Anyways I'll keep you up to date
4th July 2014, 01:20 AM   |  #2  
nokiamodeln91's Avatar
Senior Member
Thanks Meter: 2,709
 
7,169 posts
Join Date:Joined: Jun 2012
More
Are there any touch haptic responses on the screen? Then this could be an issue of corrupt or wrong bootloader installed.
4th July 2014, 02:05 AM   |  #3  
Azeazezar's Avatar
Senior Member
Flag ಠ_ಠ
Thanks Meter: 185
 
363 posts
Join Date:Joined: Aug 2011
More
Try booting into recovery and/or download mode.
And check for a battery icon while charging and off.
A problem with the boot loader on stock android without even root sounds unlikely.

If the screen stays black, i thinks its very likely that the connector from the display came loose.
lucky you, the note is not that hard to take apart, and the connection should snap back in no problem. In fact, i think that should be stap one, check the connection.

About connecting to the pc, that could be more difficult. From the description i think the usb board is in need of replacement. Also a relatively common, cheap and easy fix, but make sure you get the same revision as the one you have now.

---------- Post added at 02:05 AM ---------- Previous post was at 01:49 AM ----------

Another idea would be to connect an mhl cable and use that to see what should be on the screen. This depends on the usb port being fine, but may be worth trying anyway.
The Following User Says Thank You to Azeazezar For This Useful Post: [ View ]
4th July 2014, 02:19 AM   |  #4  
OP Junior Member
Thanks Meter: 1
 
2 posts
Join Date:Joined: Jul 2014
So for the purpose of continuity I'll post any useful links I used along the way.
At first I'll back the device up. This will be no problem as adb works just fine on my Linux box with this device. The next step would be trying this:
http://forum.xda-developers.com/show...42&postcount=7
If that does not work I'm assuming defective hardware/or bad connection due to dust. I'll disassemble the device like this:
http://m.youtube.com/watch%3Fv%3DN6C...62THSVDqsWM7uQ
And clean up the connector/ribbon plug with isopropyl alcohol
Last edited by soundl3ss; 4th July 2014 at 02:24 AM.
The Following User Says Thank You to soundl3ss For This Useful Post: [ View ]
4th July 2014, 03:21 AM   |  #5  
Junior Member
Thanks Meter: 3
 
18 posts
Join Date:Joined: Jan 2010
More
I managed to reset my old account so I'll be posting from this one, not to cause any confusion...
5th July 2014, 03:43 AM   |  #6  
Junaid1460's Avatar
Senior Member
Thanks Meter: 317
 
159 posts
Join Date:Joined: Oct 2012
if you are getting charging animation
or galaxy note logo on bootup

then you need to flash an alternate kernel or reflash original

else forsure there's something went wrong with your hardware
Post Reply Subscribe to Thread
Previous Thread Next Thread
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes