Database Users

power button stuck on "on"

Since yesterday my SGS is having a very strange issue: It seems that the power button is stuck on pressed state. When the phone was on I had the power menu appear and the phone shut down. Then it started again, only to turn off shortly after the second screen during boot, then looping in that state.
When I remove battery and put it back it automatically starts and then bootloops.
I can't get into recovery as it turns off before recovery can start. I can get into download mode but only for 3-4 seconds till the phone turns off again.
I removed the backplate and can't see any visible damage to the power button. Between the power buttons pins on the board there's a voltage of 7mv with battery removed, in case that means something to anyone.
So 2 questions arise:
- Any ideas on how to fix this? (apart from ripping of the power button which I'm not even sure would help)
- Any ideas how to get into a mode where I can backup my data or at least flash a stock rom? (Currently on CM9 with devil kernel and the devil logo shows for a second in the bootloop, not sure how the techs would like that if I was to sent it in for repair)

XlAfbk said:
Since yesterday my SGS is having a very strange issue: It seems that the power button is stuck on pressed state. When the phone was on I had the power menu appear and the phone shut down. Then it started again, only to turn off shortly after the second screen during boot, then looping in that state.
When I remove battery and put it back it automatically starts and then bootloops.
I can't get into recovery as it turns off before recovery can start. I can get into download mode but only for 3-4 seconds till the phone turns off again.
I removed the backplate and can't see any visible damage to the power button. Between the power buttons pins on the board there's a voltage of 7mv with battery removed, in case that means something to anyone.
So 2 questions arise:
- Any ideas on how to fix this? (apart from ripping of the power button which I'm not even sure would help)
- Any ideas how to get into a mode where I can backup my data or at least flash a stock rom? (Currently on CM9 with devil kernel and the devil logo shows for a second in the bootloop, not sure how the techs would like that if I was to sent it in for repair)
Click to expand...
Click to collapse
Has there been any water damage to the phone/button? Sometimes this can cause the button to short. Or it might just be stuck, does the button physically click in as normal?
It could also be worse and have an actual hardware issue with the motherboard/power button interface

there hasn't been any water damage. actually, it's been used in the rain but that shouldn't really hurt a phone... just in case i let it try for quite a while but the problem didn't go away.
the button clicks as it used to do, no sound of water or damage there.
problem hardly could have been worse as the phone is completly unusable in this state as i can't even turn it on.

Hi,
A friend has just handed me an abandoned SGS with precisely the same problem.
The power button itself feels fine, ie it doesn't feel stuck, and you can feel it clicking as normal. I too removed the backplate and can't see any visible damage to the power button.
I note however that the water damage indicator 'sticker' mentioned here: "samsunggalaxysforums.com/showthread.php/4674-Galaxy-S-I9000-Service-Manual-How-To-disassemble-your-Galaxy-S"
is completely white, indicating possible water damage at some point.
Any ideas for a fix, or do you think it would be economical to seek a fix from a hardware repairer?
I can replicate the problem as described by XlAfbk above, by simply holding down the power button on my working i9000.

i did sent to phone to the only service location samsung lists for germany. they claimed it was water damage and refused to repair under warranty. repair would have cost ~280 euro.
i'm waiting for the unrepaired device now and will try to fix it myself, in the meantime i got a gnexus

Ok thanks. Please keep me posted if you do find a way to repair it yourself.
Until then, I guess mine's spare parts!

no more warranty for you? if you're in germany PM me for a repair shop.
ebay has power button replacements for ~4€ that you could try soldering on, replacing the original one, if that's what's broken for you. I checked mine with a multimeter and as there's still resistance it's not the power button for me.

uhm, I actually did fix it... while it's not completly back to normal i can at least turn on and off the phone, just turning display on and off with power button still doesn't work
some dust had gathered on the board, apparently shorting a circuit. just grab a brush and some canned air and clean the board.
i cleaned the main board at the very top and the bottom one near the middle (PM me for a photo of the location)

Nice that it almost works now. Just thinking what an asshole Sammy is, they want more money for a maybe ~20€ repair than the device costs bought new.

the repair wouldn't have been 20€, they'd have replaced the whole mainboard for me, not just the power button. I have no idea whether just replacing the power button would help, just brought that up as that's the one item that could possibly be it and you can get for cheap.
my power button got worse again since my previous post btw. so something else must be wrong as well.

After my phone was on a rainy trip, I am suffering from the same issues as well. I checked the resistance of the power-switch, and the open-circuit resistance measured to 30 Ohms, while the closed resistance measured to 0. Of course, the open-circuit resistance will not measure the switch isolated, but still, I'd expect something in the range of at least some Kilos. Hopefully, the switch will function normally in some time (if the switch is the only problem).

if it doesn't fix itself remove the mainboard from the housing, check it using a strong magnifying glass for any traces of water (tiny white residue spots) and carefully clean them using with a small brush (and nothing but that!).
of course doing that will void all warranty!

I completely disassembled it in order to clean it properly, but it did not yield immediate results. However, however a few days of rest and it came back to life, and has been stable since. So it looks like the rest is the best advice for other unfortunates.
Sent from my GT-I9000 using xda app-developers app

Is my phone done for? (Cant bot/charge/enter download mode/no response)

So few days ago my phone suddenly turned off and kept rebotting itself (It would reach the samsung galaxy logo and then turn off). I thought it was a battery issue so I removed it for 30mins and tried again, worked fine for an hour then problem started again. I left it over night to charge in the wall socket incase.
Same issue next morning and no solution.
I replaced the battery with a friends and the same issue happened on my phone (i used my battery on his and it works fine on his) so I removed the issue of battery itself.
That evening the phone then just stopped responding at all. It would not respond to pressing the power button (no load, no vibration).
Tried entering download mode using vol down + home + power. Nothing. (So cant use Odin)
Tried entering recovery mode using vol up + power. Nothing
Tried hard reset using vol up + power + home. Nothing.
(All the steps I used a fully charged battery from another s4 phone and removed/re-entered before trying again)
So I check online and notice some people having issues with power button, but even if that is the case - wouldn't my phone still charge? I dont even get the battery chargning icon on the screen when plugged in either PC or wall socket.
I opened it up and changed the motherboard with another samsung s4 and my original problem mobo still does not load on the new s4. (My new mobo worked on the old device though).
The ONLY response I got was when I used my original mobo on new s4 device and plugged it into PC, it popped connect and then disconnect sound and thats it (doesnt recognize usb port).
What are my options apart from getting another motherboard or going to a shop for a JTAG repair? I was contemplating just removing the power button and seeing if that helps in getting a charge response lol

Well your power button is broken for sure. Replace it and then test it.

Lennyz1988 said:
Well your power button is broken for sure. Replace it and then test it.
Click to expand...
Click to collapse
Wouldn't the phone still recognize charging even if the power button is faulty?

penguness said:
Wouldn't the phone still recognize charging even if the power button is faulty?
Click to expand...
Click to collapse
It always takes a few seconds before it starts to charge. So maybe the device reboots before reaching the charging phase. I'm guessing though. But since your problems started with power button issues it would be the logic place to start.
The part only costs a few dollars.

Well I'm exactly in the same situation as you, since this morning on a i9505 running JFLTPE-GPE 5.0 ROM. The screen appears for 1 second or 2 (Samsung logo) then it powers off . I need to remove the battery to try something else.
Same behaviour, even for recovery mode, so Odin is not an option.
I thought that changing some kernel settings have caused that, but as I just put them back to default values, it should not happen.
I didn't have some power button issues, it was just powered off at my wake up this morning. In your case, does your phone vibrate and power up instantly when you put the battery ? That's the case for me, but it should not be the normal.

My problem is actually solved : indeed, it was the power button. I removed all the screws and played a little with this power button (air dust, etc...), enough to make it start correctly !
I managed to do some backups, and now I hope that it won't break again.

Calicodesiles said:
My problem is actually solved : indeed, it was the power button. I removed all the screws and played a little with this power button (air dust, etc...), enough to make it start correctly !
I managed to do some backups, and now I hope that it won't break again.
Click to expand...
Click to collapse
Yeah, that happened before (automatically powering up, vibrating, going to samsung logo and then shutting down and doing it again until I removed battery - putting the battery back in with start it up without pressing the power button).
When it was in that phase, the one thing that did work was doing a soft reset (home+power+down vol, and then holding just power) - however that only worked for like an hour before it went back to the restart phase.
However now it doesn't respond to anything at all. (Any kind of response I got was when I put that mobo in another s4 and plugged in usb, which just gave a connected/disconnect sound on w7, no life on the phone itself).
Be very careful as to what you do, I suggest you do NOT leave the battery on it and charge it (which was the last thing I did before it went unresponsive) - my guess is phone went haywire trying to turn on/off continously.

S4 i9500 dead without reason

Dad's S4 i9500 suddenly died.
Won't turn on at all. No recovery mode, nothing.
No damage, phone is immaculate.
Was not dropped, nothing.
Phone will not charge and screen that shows charge when charging shows nothing.
Any ideas, anyone?

kez3 said:
Dad's S4 i9500 suddenly died.
Won't turn on at all. No recovery mode, nothing.
No damage, phone is immaculate.
Was not dropped, nothing.
Phone will not charge and screen that shows charge when charging shows nothing.
Any ideas, anyone?
Click to expand...
Click to collapse
Double check your power supply and your usb cable. Probably the battery is totally empty and will not been charged...

I keep a few spare batteries on me that are always fully charged. We have tried a couple of those in Dad's phone, then put them in my phone to check they had charge. They had 100% charge.
The phone was still 100% dead with the 100% charge batteries in them.
I have replaced the charging port ribbon last night in case this was causing a short.
The new ribbon made no difference; still 100% dead. Nothing at all. No sign of life at all.
I'm thinking the on/off button or the power IC.
Of course it may be something else.
Your thoughts?
Thanks

It can be the power button has gone faulty it happened to me before try smacking the power button couple of times to see if it makes any difference i pushed mine against a desk a couple of times and it worked after that i installed a shake lock app so i don't need to press the power button anymore unless i need to turn on/off the device.

#Runn3r said:
It can be the power button has gone faulty it happened to me before try smacking the power button couple of times to see if it makes any difference i pushed mine against a desk a couple of times and it worked after that i installed a shake lock app so i don't need to press the power button anymore unless i need to turn on/off the device.
Click to expand...
Click to collapse
I put a ohm meter across the on/ off switch this evening.
I get infinite resistance when it is not pressed, and finite/ no resistance when button is pushed.
So the switch is working perfectly and it's definitely not the on/off switch.
Any other ideas?

guess your motherboard is x_x then

Yes seems to be the board.
What's the best way to work out what's wrong with it/ get it fixed.
Anyone know the most likely cause/ who does, or how to do such trouble shooting analysis.

Booting into download mode but can't volume up or down

Hi,
I'm.having an issue where my phone recently fell into some salt water and wasn't turning on as a result of the back cover being compromised and water getting into the phone. I managed to pull the phone apart and clean up all the components with isopropyl alcohol etc. I managed to get some life out of the phone.
When I plug the device in to the wall charger I get a symbol of no charging with a water drop at the bottom of the screen. When I do the force restart commination (volume down+ power) I enter the initial screen of download mode where you either press volume up to continue or volume down to cancel however when I press either keys the phone doesn't respond. The images attached show the what I am seeing.
I would consider myself an intermediate user as I flash firmwares using Odin etc from I had my first Galaxy s2 skyrocket.
I am.unsure how to proceed from here and any suggestions would be appreciated. I suspect that I may need to change the charging port and the battery... It may even need a new firmware flash but since I'm unable to get to the Odin part of download mode I'm unsure how to go about it. Thanks

Your the second person I've seen this. As flashing didn't ruin anything flashing files probably won't fix anything. Charging wise. Wireless. No usb. And all I can say is either it's wet. Still. corroded. Or something shorted out. Which again flashing probably won't fix. I would tear it down look for corrosion. If not. I would assume the worst

Recover Data from Dropped Phone

Hello,
a friend of mine dropped his phone into water. However, I dried the phone as good as possible without opening it. Now when I start the phone it gets stucked at the Samsung Galaxy A40 secured by knox display. I let it for hours but nothing happens. When I restart the phone by holding volume down + power and after that I press power + volume up I can enter the recovery mode. Before I make any mistake I wanted to ask if I can get acces to the internal storage of the phone to get back the pictures and videos. May it help to wipe the cache? Or can I install any apk to get the phone connected to the computer?
Kind regards
Stefan from Germany

How to use your broken smartphone from a PC | nextpit
Has your phone screen cracked, leaving you unable to access your data? All is not lost! We'll show you various solutions on how to recover your data!
www.nextpit.com
This site shows the option to connect A40, if still Android 9.0, via usb hub to external screen and mouse and unlock. For Android >10 this doesn't work anymore
I have the same issue and neither usb-debugging on nor fastboot enabled. A40 doesn't show up in adb. So I also read when putting A40 via Power and Volume up into download/recovery mode, at least a backup of data should work.
My current idea is I have to replace display in repair shop or unlock via usb-hub + mouse.
Something I don't get right. How do you power off the A40 without screen to get safely the SIM card out? Power and volume down 7 sec, then release power off, then volume down? When I do this the A40 reboots with vibration. Power and volume up apparently reboots to recovery mode. Long pressing Power also doesn't turn off A40. Also in the A40 manual nothing is written on this

I'm having a similar, but worse problem: a friend of mine let her A40 fall into the toilet at a party. When she came back home, the phone wasn't working anymore and the battery was swoolen. We've tried to dry the phone with the good old bag of rice for a week, then I dissassembled it to take out the battery and see if there was any damage inside.
While there is no visible damage, the phone doesn't give any sign of life, not even with the usb cable plugged in.
So I have two questions: is the A40 supposed to boot without a battery plugged in, just using the USB cable as a power source? In the worst case, is there a way to recover the data from the phone if it's not possible to boot it (I bet the answer to the last question is no)?