5,598,233 Members 46,813 Now Online
XDA Developers Android and Mobile Development Forum

Boot loop. Can't access download or recovery mode.

Tip us?
 
r i c h
Old
#1  
Junior Member - OP
Thanks Meter 0
Posts: 5
Join Date: Oct 2009
Default Boot loop. Can't access download or recovery mode.

Hello all,

I'm got an I747 that one day just decided to stop working on me. I was running stock rooted firmware and have never tried custom roms.
The phone repeatedly tries to boot up and then shut down. I can't ever get pass the Samsung logo.
The same thing happens when trying to access recovery or download mode. I see the initial download/recovery screen and then the phone shuts off.
Is the motherboard toast?

My friend has an I747 as well but it has been blacklisted. Are there any parts I can swap from one another to get either one of them working?
Any help or input is appreciated.
 
pc103
Old
#2  
Senior Member
Thanks Meter 53
Posts: 254
Join Date: Jul 2007
Quote:
Originally Posted by r i c h View Post
Hello all,

I'm got an I747 that one day just decided to stop working on me. I was running stock rooted firmware and have never tried custom roms.
The phone repeatedly tries to boot up and then shut down. I can't ever get pass the Samsung logo.
The same thing happens when trying to access recovery or download mode. I see the initial download/recovery screen and then the phone shuts off.
Is the motherboard toast?

My friend has an I747 as well but it has been blacklisted. Are there any parts I can swap from one another to get either one of them working?
Any help or input is appreciated.
Does removing & reinserting the battery (with no buttons pushed) trigger the restart behavior?
 
r i c h
Old
#3  
Junior Member - OP
Thanks Meter 0
Posts: 5
Join Date: Oct 2009
Quote:
Originally Posted by pc103 View Post
Does removing & reinserting the battery (with no buttons pushed) trigger the restart behavior?
Yes, just by inserting the battery the phone vibrates and begins to start up.
Once the Samsung logo appears it turns back off again.
 
pc103
Old
#4  
Senior Member
Thanks Meter 53
Posts: 254
Join Date: Jul 2007
Quote:
Originally Posted by r i c h View Post
Yes, just by inserting the battery the phone vibrates and begins to start up.
Once the Samsung logo appears it turns back off again.
Indicates Samsung stuck power button syndrome. A lot has been posted about this.
I would start with warranty service if available.
If not, search a lot & choose solutions carefully.

It happened once with my Captivate & teardown & blowout cured it,
though I never observed the physical defect (only the symptoms).

I have used apps to reduce my use of the button ever since, with GS2 & GS3.
Approach teardown with extreme caution if you are not experienced.
Gently tapping a table edge with the upper right has worked for some.
The Following User Says Thank You to pc103 For This Useful Post: [ Click to Expand ]
 
r i c h
Old
#5  
Junior Member - OP
Thanks Meter 0
Posts: 5
Join Date: Oct 2009
Quote:
Originally Posted by pc103 View Post
Indicates Samsung stuck power button syndrome. A lot has been posted about this.
I would start with warranty service if available.
If not, search a lot & choose solutions carefully.

It happened once with my Captivate & teardown & blowout cured it,
though I never observed the physical defect (only the symptoms).

I have used apps to reduce my use of the button ever since, with GS2 & GS3.
Approach teardown with extreme caution if you are not experienced.
Gently tapping a table edge with the upper right has worked for some.
Thanks for the advice. I did not know this was a common problem.
Unfortunately I am out of warranty so I will try to fix this myself.
I have already taken apart the phone before so I am fine with tearing it down again.

What do you mean by blowout? Do I physically try to tap the power button of the mother board on a table edge?
 
pc103
Old
#6  
Senior Member
Thanks Meter 53
Posts: 254
Join Date: Jul 2007
Quote:
Originally Posted by r i c h View Post
Thanks for the advice. I did not know this was a common problem.
Unfortunately I am out of warranty so I will try to fix this myself.
I have already taken apart the phone before so I am fine with tearing it down again.

What do you mean by blowout? Do I physically try to tap the power button of the mother board on a table edge?
Push out any dust or debris outward using forced dry air.
The gentle tapping of the button edge area is a pre-disassembly alternative.
Many opinions, experiences & videos have been posted. It's worth it to sample some first.
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes


XDA PORTAL POSTS

Easily Configure Xposed Module Projects in Eclipse

XDA Recognized Developer rovo89‘s innovative and versatile Xposed Framework allows … more

Android Control Center Becomes Quick Control Panel, Brings Host of New Features

You may recall that back in August of last year, we talked … more

Polish Your Custom Themes with Theme Debugger

Creating a custom Android theme from scratch can be quite the laborious task. In addition to … more

Clean Up Your Logcat Code with Lib Cleaner

Some of you may think that writing code is the hardest part of development. It’s not, as the … more