Power button problem vns-l31 - Huawei P9 Lite Questions & Answers

Hello to all,
I contact you because I have problems with vns-l31 power button. i've changed the flex button for fix, but continue to not work. The voltage is 1,77v on each pin rispect the ground and the new buttons works too... When i disconnect the batteries, and riconnect the smartphone turn on automatically.
is come back a old issue, now the smartphone is in turn on and turn off loop (as well as the power button remains always pressed) :crying:
PLEASE, anyone know how fix it?

Related

Very strange Problems with my MDA compact

Hello XDA-friends,
i´ve got an HTC Magician (MDA Compact) with some strange problems.
The Power-Button was totaly broken. I´ve soldered it back on it´s place but the Rubberbutton is also broken.... But that´s not the Problem (where can i get this rubberbutton?). The lower left key (contacts) doesn´t react. when i wind the Case a little the contacs appears on the screen. The powerbutton could only turn off the backlight, not the power. If i press the power button short, nothing happens, if i press it longer... the backlight turns off/on.
The LED doesn´t show anything. The Power is on and charges the battery, but the LED is off. When i activates Bluetooth, it also stay dark.
Is this all one problem? How is the Power regulated an dbeeing shown at the led?
Thanks for your help....
I´ve found out that a Component at the Power button is missing. I don´t know if it was a resistor or a capacitor. Could somebody tell me what kind of parts are soldered directly to the power button and what are values of these parts?

Problem with Power off

I have problem with power button. when push pwr button dont,t off pda, but when hold pwr then lights off.
Power is never shut off in PDAs, thats the way PDAs have been designed.
I have the same problem, he is not talking about a full power down. If you hit the power button quickly the phone does nothing. However if you hold the power button down for about 2-3 seconds the lcd light turns off as it should.
Because of this I have to wait 1 minute for the unit to suspend before putting it back in the holster.
Does anybody have any idea as to why this might be happening. Im not new at this so hard reset, soft reset.. new rom... new radio...turning up side down while chanting. It does not change......
It will do it right one or twice in a week.
Maybe somebody that understands the signal that the unit receives upon pressing the power button might be able to shed some light on this.... Again the button does seem to operate just not suspend when pressed normally (1 second or less)
I have done some more research and this seems to be a common problem for some with BAs but nobody has found out why. There must be some kind of common hardware fault.. Does the power button send only one signal or is it a multi signal device.
afbcamaro said:
I have the same problem, he is not talking about a full power down. If you hit the power button quickly the phone does nothing. However if you hold the power button down for about 2-3 seconds the lcd light turns off as it should.
Because of this I have to wait 1 minute for the unit to suspend before putting it back in the holster.
Does anybody have any idea as to why this might be happening. Im not new at this so hard reset, soft reset.. new rom... new radio...turning up side down while chanting. It does not change......
It will do it right one or twice in a week.
Maybe somebody that understands the signal that the unit receives upon pressing the power button might be able to shed some light on this.... Again the button does seem to operate just not suspend when pressed normally (1 second or less)
I have done some more research and this seems to be a common problem for some with BAs but nobody has found out why. There must be some kind of common hardware fault.. Does the power button send only one signal or is it a multi signal device.
Click to expand...
Click to collapse
Do you have a problem with turning on? First, we need to know whether it is hardware issue or not...
What you can do in the mean time with the turning off problem is by installing a poweroff app like shutdownme, psshutxp, etc etc...
Absolutely no problem with turning on from standby... Right now i just lock the phone before placing it back in the holster.
To make it clearer if you HOLD the power button down the backlight will turn off only. It will still show the display image and keys will still function (it dims)
Well, I had the same issue with the latest WM5 ROM. I thought I was too stupid to press the button, then I thought the button was broke, then I thought, I'll have to live with it.
Now that I have flashed to WM6, no problems at all! Never even came to my mind that this problem once existed. So I guess that some ROMs just have this particular bug?
Stefan
I have tried all the roms as well as 2003 and have the same issue in all of them. And im not alone.
Power off Problem
I'm in same condition.
Had the same problem when using WM2003 second Ed.
Now I've installed WM6 but nothing changed:
I cannot power-off/suspend but can turn off backlight if press and hold power button.
When in standby the button works fine to turn on the device.
Also, sometimes volume turns up continously with "noisy" beep ...
Anybody solved this problems?
Thanks,
Ruben
(WM 6 - 5.60.00 build 18125.0.4.2
radio 1.12.00 )
Power button has two modes:
1. Click mode: Click it once for a short duration. This turns off backlight and can be resumed by pressing it again or by pressing OK button
2. Press and Hold mode: Press and hold for few seconds and release. This mode will dim the backlight and no other button will bring it back. This is some kind of deep sleep in battery mode. To resume the original setting, press and hold Power button again for few more seconds.
(p.s.: I am not sure if this behavior is true for all the BA models)
April 1,
I know these modes...
It seems that "mode 1" doesn't work at all...
I would activate "Button Lock" (settings-->button--> Lock(tab)--> "lock all buttons except power button") to turn-off backlight and "lock all buttons except power button" but I cannnot...
You solved this problem?
I have had this issue of not being able to power off. One way I always got out of it was by clearing the registry hive. Unfortunately this brings the PDA back to the basic ROM. At this point the power button worked without any issues. Upon reloading the software the problem may come back. I believe the issue is related to some programs. I can't recall which program it was that seemed to cause the issue. One other thing I think that also worked was just entering the registry and getting back out and doing a hard reset.
I had the same problem with my 6600. the message button also didn't work. Believe it or not, to fix it. I banged the lower half (4-way area) on my desk a few times. Not hard enough to break the screen. But prolly hard enough to free what was prolly a sticky key. And now everything is working.
i am too
the same ...
when i press the power quickly , nothing happen
when i press the power for 2 sec. the backlight turns off
i tried every thing .... including formatting my BA
any one solve it ???
I have this same problem, my power button does`t work. i tried installing different roms but without any chance to fix it. maybe its an mechanic issue. i will change pwr button, i hope this work.
Look at one of my previous posts. I fixed it, twice, and other users have used the same metod to fix it. I think the problem is "hung bit" hardware related because you can also send it in for service, and they will change a chip, but i never had to.

broken power button

Hi all,
my power button is broken on my touch hd! tried to fix it and nothing is happening. hard reset the device as i thought it could be a rom issue, still broken.
does anyone know a way to remap the power button to say the top volume key?
at the moment i have the device not turning off and have adjusted the backlight but this is not ideal as it will be eating up more power than when the device is in suspend mode.
any help appreciated
Mark

[Q] Power Button Problem

Hello. I just notice when I update the firmware to NF4, the power button of my note 3 has a problem.
Here is the scenario.
I turned off the phone, remove the battery then insert it back. Trying to turn on or boot my phone using the power button but no matter how I try to press still no luck. When I charge the phone, of course the battery icon is in display. I press the power button then that's the time it boots.
Anyone been experience like this? What is the solution? I already tried to reformat the phone but still the problem is there.
Thank you for the help. Thanks.

Power button problem

Hi all,
I have accident on sea where one wave splashed a bag where my phone was. After small problems with "laggy" buttons everything went fine and my phone worked correctly except power button. It doesn't react. I couldn't even restart the phone. And when my battery was used I coudnt turn it on. I tried to press volume up + power button million times, or all 4 buttons, and somehow I manage to turn it on again while still I was on vacation. Few times I have entered Android recovery screen, and Power button worked perfectly there (I managed to press power button and select reboot device). And after the phone turn on power button would usually works few minutes and then it would died again.
I have installed software for simulation of power button and it worked ok. This morning somehow I decided to turn off my phone, and I couldn't even imagine what kind of problems I will have to turn it on again. Whole day I am trying to turn it on, but it doesn't react. When I pull in charger then it shows regularly battery status (70%). I am desperate :crying:
I am trying to google or find any solution how to bring it ON again without power button, but without success
Is there any way how could I turn Samsung galaxy S6 Edge Plus without power button?
And what you think, is this some kind of software problem, and maybe some factory reset or flashing might help? Or it is more likely hardware problem?
Many thanks in advance.
Can anyone help me?
I have just found this article which might help me:
How to turn ON Galaxy S6 without using the power button:
When the Galaxy S6 or Galaxy S6 Edge is turned off, press and hold the volume button for a few seconds.
While holding the volume button, connect the Galaxy to a computer using a USB cable.
Wait for your phone to boot to Download mode.
Then press down on the volume rocker to cancel the operation.
After the operation has canceled, the Galaxy will reboot and turn on.
You have successfully turned on the Galaxy S6 without using the power button.
source: http://recomhub.com/blog/how-to-turn-on-and-off-galaxy-s6-without-power-button/
But somehow this doesn't work for my phone? First I wasnt sure which volume button should be pressed, so I tried with both in all combinations and still cant get into Download mode.
But I am glad that samsung had created some workaround if power button is not working. THis used to work on older models I guess.
Is there anyone who might know the way how to turn on phone without power button?

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