[Q] s4 wont turn on or charge? - Galaxy S 4 Q&A, Help & Troubleshooting

I was using my phone one day and the screen turned all green. I had to force my phone off, and then I turned it back on. After awhile it happened again, but it wouldn't turn on again. I pulled the battery and I could turn it back on after that. It happened again and now I cannot turn my phone on no matter what. I feel like it has a problem with the battery because pushing on the battery while turning it on helps has worked in the past, but it doesn't anymore. My phone also wont charge. Does anyone know how to fix this?

It could be your battery. Or it could be the motherboard. The screen going green and the shutting down could indicate a problem with the GPU and the safety circuits kicking in to prevent other damage to the phone.

I know this isn't much help, but my phone regularly goes green (almost like night vision) in extremely bright environments (like at the beach when its sunny). I just presumed it was a feature to help visibility as it really does help hugely... Maybe Im wrong!
Anyways, get a new battery and see if that works.

The screen is supposed to get brighter (if auto-brightness is enabled) in sunny environments, but not green.
Are you using a custom rom?

Related

HTC Touch help, cant turn on phone

hey guys i need a little help, everything was working fine and then i turned the phone off and then turned the phone back on. All it did was go to the screen smart mobility and then shuts back down. Any clues ?? i just cant turn it on anymore.
i have the same problem
I turn on with a new rom my elfin and now does not turn un
Make sure your battery is fully charged. Try turning it on plugged in. Try using a different battery if you have one - If you don't have another battery and the one you have is old, it may need replacing. Turning on and then shutting off sounds like battery problems to me
I have another HTC Touch with a very similar problem. I think mine is due to minor water damage though (water balloon hit my pocket, unlucky huh?). It's been dead for about 4 months. It "MIGHT" turn on after a few weeks leaving it alone, then reach Smart Mobility screen and then turn off... permanently for a few weeks.
When I normally try to turn it on, I can hear a distinctive high-pitched noise coming out of the back, it'll stay like that until I rip the battery out.
Every few weeks I hope to get it booted long enough to maybe flash a new ROM, or IPL/SPL. I don't know what to do with it. Maybe some boot file or the hard drive corrupted due to the water damage. No light, no response from other batteries, no light via USB cable, just a slight high pitched noise. To this day, it is still dead.

Overnight charging SOD Solved (for me anyway)

Here's the story, whenever charging overnight, I plug in the charger, as you do, the screen lights up so I press the right hand screen off button, thinking it might help with the charging or whatever, then I get up the next morning to find the green light permenantly on and the phone won't boot until I take the battery out, put back in and all is well, VERY annoying.
So the other night I just put it on charge as normal, but this time didn't turn the screen off for some reason, I get up the next day thinking I'll have to do my normal routine of taking the battery out etc, but no, to my surprise no SOD, done it a few times now and all is well.
Funny thing I know but like I say it works for me and might help a few others with the same problem.
rdm

[Q] Dead backlight?

Has anyone experienced a dead back light on their EVO?
I flashed Caulkin's rom 2 days ago.. it has worked flawlessly for those 2 days.
Today, I used my phone, ended a call, plugged it into my car charger, and then the next time I tried to use it, the screen was dead.
I can see everything on the LCD in direct sunlight, but the back light won't light.
I've booted into recovery, flashed, etc.. still no back light - ever.
The lower keys still light up.
edit: Also, the phone is hot as hell. Like the 4g radio is on and I'm doing benchmarking all at the same time. CPU shows idle-ish, and 4g radio is off.
Other than turning it in (I need to flash back to stock) is there anything I can do?
Thanks...
cj00ta said:
Has anyone experienced a dead back light on their EVO?
I flashed Caulkin's rom 2 days ago.. it has worked flawlessly for those 2 days.
Today, I used my phone, ended a call, plugged it into my car charger, and then the next time I tried to use it, the screen was dead.
I can see everything on the LCD in direct sunlight, but the back light won't light.
I've booted into recovery, flashed, etc.. still no back light - ever.
The lower keys still light up.
edit: Also, the phone is hot as hell. Like the 4g radio is on and I'm doing benchmarking all at the same time. CPU shows idle-ish, and 4g radio is off.
Other than turning it in (I need to flash back to stock) is there anything I can do?
Thanks...
Click to expand...
Click to collapse
The heat makes me think there was some kind of hardware failure. I'd assume something like this would be covered under the 1 year HTC warranty.
Back when I had my TP, whenever the phone would get too hot the backlight would 'disconnect' I guess to prevent damage to the phone, once the phone cooled down the backlight would come back to life... try it. I had to remove the battery to make it happen and let it cool down for a good 2 or 3 hours before I was able to get the backlight again. This happened because:
1 the phone was on direct sunlight OR
2 bad AC adapter overloaded the battery
I thought the same. I had the battery out for about 2 hours.. still the same thing.
Flashed the stock rom.. knowing that it wouldn't help (even when I boot into bootloader, still no BL).. but it's at least ready for Sprint in the morning.
FWIW, I was first in line on launch day for this phone. It's had some seriously heavy use.
But in the ~14-15 years of owning cell phones.. I've never had an issue like this.

Phone randomly shutting down after a fall.

Hey!
So i was testing some VR stuff, while i let my phone fall of my lap. At first i tought it was dead since it shown a red light, but after opening it and reconnecting the battery, i saw it was all OK.
Problem is, since that fall, it randomly shuts down, if i place it on a charger, it gives me a red LED light (which indicates that the phone has 0% or really low battery), however, when i manage to turn it on (which is sometimes), i can see its all OK, sensors are working, camera is OK, just the date that screws up (Gets back to January 1st, 1979)
Is this a problem with the battery or do you guys think something on the board is mis-connected now? What can i do before i take it to someone else?
No, replacement is not an option since aside from the random shutdowns, the phone is still working perfectly.

S7 Edge Won't Turn On - Solid Green Light

Hi,
My phone (s7 edge) won't turn on or respond to anything. I woke up to find my phone dead and assumed probably the battery drained. I put the phone on charge and left, after a couple of hours the led light was solid green like the phone is fully charged, but even after unplugging it stayed on. I tried turning it on but it won't respond. I have already tried simulating battery pull, booting into recovery mode etc. but no success.
Has anyone experienced this? Would appreciate any suggestions on how to get this working?
Possibly a hardware problem. It really takes it to a technician to analyze it.
Dark Stranger said:
Possibly a hardware problem. It really takes it to a technician to analyze it.
Click to expand...
Click to collapse
Yeah seems like that. The green light turned off after several hours, now the phone won't respond at all. Planning to take it to the tech today

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