Samsung s4 SCH-I545 won't boot, black screen - Galaxy S 4 Active Q&A, Help & Troubleshooting

Hello,
Somebody today asked me to fix their galaxy s4, it cant boot, its just in a black screen, and apparently charging it via usb doesn't work, it just makes the top part of the samsung galaxy hot.
I have tried:
* using a flashlight on the sensor
*battery pull
Is there a way to fix this problem?
Thanks,
Bill

1 - You are in the wrong forum. This one is for the S4 *active*.
2 - Try holding Volume up & power for a few seconds. Post your results, if any, in the S4 forum. Good luck.

Good Luck
Yeah, I hope the post above helps, good luck!

Related

[Q] TouchScreen problem

Hello,
I am new to Nexus one coming from Iphone 3G. the phone is quite good but i experience a little problem.
When the phone is plugged in and is charging, the touch screen becomes very inaccurate. Typing on keyboard is impossible...etc, the only solution is to use the trackball. Everything is gone after unplugging it from the power cord.
Do you have any advice for solving this ?
Best Regards,
I've heard that if you press the power button to put the phone asleep and then press it again to wake the phone would reset the touchscreen
Sent from my Nexus One using XDA App
Is the phone getting hot while you are charging it?
I found that when it gets really hot that it can mess up the touchscreen a little.
Common problem, no fix for it. Just black out the screen, and the problem resets itself and goes away. Takes 1 second. It's a hardware issue.
i have same problem too....
sorry... wrong post
Thank you for your answer, i understand that plugged or hot can mess the touch screen. It's not "fixable", i will live with it.
I sent mine back 3 times and it is finally fixed. I have a perfect touch screen. Have not had san issue in over 2 weeks. Send back and leave note with your phone. As I said I would not except no for an answer.
Vinny
Sent from my Nexus One using XDA App
hmm just had this problem for the first time... searched "captivate touchscreen problem" and what do you know? found out its because im charging....!!
best bug fix for nexus on display problem after plunin to power
nolan76 said:
Hello,
I am new to Nexus one coming from Iphone 3G. the phone is quite good but i experience a little problem.
When the phone is plugged in and is charging, the touch screen becomes very inaccurate. Typing on keyboard is impossible...etc, the only solution is to use the trackball. Everything is gone after unplugging it from the power cord.
Do you have any advice for solving this ?
Best Regards,
Click to expand...
Click to collapse
after plugin to power
JUST....
turn off display(press power button)
clean display with hand..
and turn on again

Did your screen turn purple?

Hey guys
I have my note for around 3 weeks now. I experience the purple screen twice.
so basically out of no where, the screen will turn really purple like. but the problem is fixed after i restart the phone.
not super concern about it, but just want to know if this is a bad sign that the phone will die on me?
thanks!
Ive had this experience on my Galaxy S1 and S2 I get a quick flash of either green or red color then everything is back to normal.. happend once or twice on my Galaxy S1 for owning it for a year and maybe more than 3 times on the S2 for 3 months.
It's a software bug, and i guess it'll get patched sooner or later by Samsung, but no i do not have any problems with the screen.
I've had it once Was more blueish tho. Just turned the screen off and on again (IT Crowd ) and it worked just fine after (I freaked out at the time tho).
Only once. Screen turned blueish upon waking up of device.
Yes, it happened to me too. Turned blueish when turned on but returned to original when hitting the power button. Thank god it's a software bug rather than hardware.

[Q] [HELP] Black Screen but Functional Device. Galaxy Note N7000

Hello Everyone!
So i'm really stuck over here. I have an international Samsung Galaxy Note N-7000 that is working but with a black screen!
First of all i want to discuss exactly what i have done:
1.i had a problem with the charging port where it works sometimes and most of the times doesn't. So i decided to order a new charging port to replace the existing one.
2. When i received the new charging port i instantly started to dissemble the device (The device was working perfectly before starting replacement)
3. After i removed the old one and installed the new, i turned on the device and it showed only a black screen, then after some time i saw the touch buttons light, but still the screen is black:crying:
4. so i decided to return back the old charging port and this time when i turned on the device it sounded like it's booting and working but still with a black screen. The phone even received call and the touch screen is working but with black screen.
What do you guys think has just happened to my phone? could the new charging port cause any problems with the motherboard?
i'm really stuck and don't wanna go to a service center
I have recorded a video of the problem. Please see it below
since i'm new over here, i'm not allowed to post youtube link.
please head to youtube and type my username and watch the video : nadeaa0a
thank you very much
My younger brother always liked to disassemble things with a hammer wondering after why it wasn't possible to assemble it the other way around.
It took him a few years to understand that real knowledge of things is a clear advantage.
Go to a service center and get help from a professional instead of making it ...
Sent from my GT-N7000 using xda premium
maybe you disconnected the wire you were changing ports ! don't worry and don't freak out just take to any shop and they will check it i don't think the screen is burnt because if it was it would be more expensive ! go to any shop and ask them to change ports and check the screen
for what you described, my best guess would be either you unplugged the lcd and didnt plug it back in properly.... or you damaged the flex for the lcd... the charging flex wouldnt cause the problem... just inspect the lcd flex and plug for damage... if no visible damage plug it in again and try it again... lets hope its just not plugged in right...
I have the same problem
Hi,
I have the same problem. I had never disassembled my phone and the screen slowly turned purple and started blackening out. It was fully functional. This I knew because I connected it to my Windows 7 computer and used Android Commander. I ordered a new screen complete with bezel etc. I have two batteries, the first didn't even charge after I put it in the phone (it had drained totally during the wait for the new screen), the second was partially charged and allowed the screen to boot. It is however behaving like the first screen did before it went black, that is purple. I am sure I have not done anything wrong with the connections. Could it be the batteries? or the adapter flex? I just hope it is not the mainboard. It is not on warranty and we don't have that many honest phone specialists around where I live. I am almost sure others have experienced the same problem and someone on xda knows what the problem is. If you do I would be indebted.
nadeaa0a said:
Hello Everyone!
So i'm really stuck over here. I have an international Samsung Galaxy Note N-7000 that is working but with a black screen!
First of all i want to discuss exactly what i have done:
1.i had a problem with the charging port where it works sometimes and most of the times doesn't. So i decided to order a new charging port to replace the existing one.
2. When i received the new charging port i instantly started to dissemble the device (The device was working perfectly before starting replacement)
3. After i removed the old one and installed the new, i turned on the device and it showed only a black screen, then after some time i saw the touch buttons light, but still the screen is black:crying:
4. so i decided to return back the old charging port and this time when i turned on the device it sounded like it's booting and working but still with a black screen. The phone even received call and the touch screen is working but with black screen.
What do you guys think has just happened to my phone? could the new charging port cause any problems with the motherboard?
i'm really stuck and don't wanna go to a service center
I have recorded a video of the problem. Please see it below
since i'm new over here, i'm not allowed to post youtube link.
please head to youtube and type my username and watch the video : nadeaa0a
thank you very much
Click to expand...
Click to collapse
it shows as color black, or nothing (like locked device)? I used to face this problem too with my infuse 4G, but it was because of installing custom rom. Had problem with few rom i installed but nothing happen on my stock one. If your device is just not lighting up(like locked device), then i guess because of ROM, but i'm not sure yet. But if it shows "color black", then i don't know.
THIS IS NOT A SOFTWARE BUG. Its the Screen flex or the ribbon. Disassemble the back part, and take a look at the flex or the ribbon connector of the screen, clean the conector with a tooth cleaner with alcohol and let it dry for a few minutes. Put it back on and mount the back part again. Test it, it should work.
Same thing here: changed the usb port, booted fine, had issues with the sim, turned off took it apart again to check, put it back on and black screen.
Yea having the same issue here, dismantling the usb module and put in new one, power up black screen!! The menu and back button did lights up, and the phone is working too, can hear the booting tone, anyone got any solution for that yet?
jasonhs said:
Yea having the same issue here, dismantling the usb module and put in new one, power up black screen!! The menu and back button did lights up, and the phone is working too, can hear the booting tone, anyone got any solution for that yet?
Click to expand...
Click to collapse
You damaged your LCD flex cable or didn't plug it in correctly ..
N00b... said:
You damaged your LCD flex cable or didn't plug it in correctly ..
Click to expand...
Click to collapse
I have unplugged and replug back few times, same result. Guess most probably i have damaged the flex cable. Replacement part seems too pricy to change, rather buy a new phone.
Sent from my GT-P6800 using Tapatalk

[Q] S4 Active - Very slow to turn off?

Hi all,
My gf got rid of her S3 yesterday after lots of problems and upgraded to the S4 Active on Voda UK. Great phone so far, but she's having a weird problem where on reboot or shutdown it takes well over 2 minutes to actually power off. The screen goes black as usual, but the notification light pulses blue until it finally vibrates and powers off. It starts up in what seems a normal amount of time.
Has anyone else found this issue or know what it might be?
The phone itself is completely stock and nothing untoward appears to be running in the background which might be blocking the powerdown.
Thanks in advance
Questions go in Q&A'
Thread moved
Thanks
FNM

Samsung Galaxy A40 Boot Issues.

Hi all i recently had a galaxy A40 from a customer that needed a replacement screen after being drooped down the toilet i told her not to bother as water damaged dut she needed some info off the phone.
I replaced the screen but had heat sensor issue so i replaced the power inlet board and it worked for a couple days when i gave it back to her.
Now all i am getting is the android logo screen at the start and nothing else and it remains on the screen i cant enter any of the boot options to hard reset or download mode etc.
I think its proberbly knackerd now if any one has any idea it would be apriciated thanks mark

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