Samsung Galaxy TabS SM-T705 after the screen turns off, it runs on by pressing random - Android Q&A, Help & Troubleshooting

It all started 2 days ago, when watching a clash of clans replay the screen turned off for the energy saving thing. I pressed the power button to bring it back, but the screen didn't turn on, i could hear the game sounds, and the touch screen was working, after the replay ended i was able to tab the buildings in my village and hear the sound they make. I pressed some random combination of buttons, i think its power+volume down and the screen turned on. It happened a second time during that day, and i was able to turn the screen on again. But the day after that trick didn't work and the tablet was stuck with a black screen.
I tried a factory reset, but the menu for it wouldn't appear, the odin menu by the other hand worked fine. The recovery menu should appear when with the tablet turned off you press volume up + home + power in that sequence, and releasing the power button at the samsung logo screen. But the menu never appeared, so i navigated it blindly and i think i managed to reset it, at the next accension i was prompted with the personal information field, name, google account, time settings etc..
The phone started again, with all default settings, and all my files where gone (so im assuming the factory reset worked) but when the screen turns off it doesn't come back by pressing the power button, it comes after trying a few combinations (and again i think it is power + volume down and wait a few seconds).
So im worried it was all in vain, also the screen brightness is bugged, and changes the colors, the become reddish with low brightness and some colors disappear.
Edit: After i let the screen turn off for the third time today, it doesn't come back on. So im back at the black screen...

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[Q] Need help for my SGS3 (latest cyanogenmod on it)

Hello everyone,
I'm a newbie at rooting.
I have used CM for 3 months but for a week it got a little strange.
Scenario 1) When I push the power button to get to lock screen, the soft buttons' light turn on for a moment but no change happens on screen. I push power button again, the same result. No other respone from my mobile. If I push power button for 10 sec to reset, i see a little green or purple light beam from the bottom right. After a while, it disappears. And still no response. I remove the battery as a last resort and put it back, when I push the power button, it's the same. Little colorful light beams...
Scenario 2) A short time ago, while I was playing a game on it, the screen just turned off and I pushed the power button... as you guess, the story goes on the same way.
It's now off, I couldn't get to it in any way.
What can I do to solve and how?
You guess it's urgent.
Sorry for my poor English, thanks in advance.
Can you restart the phone in download mode, or recovery mode?
I just figured out something:
The phone turned on and I disabled developer settings. After this, when the screen is locked and off and I push the power button, I see nothing on the screen (maybe a little purple or green beam at the right bottom) but the soft buttons turn on. I slide right to unlock without seeing anything, I pass the lock screen and it's now open. (when I touch the screen, the soft buttons turn on again and again as it should be) I just scroll the main pages right and left, push the volume or main button, they work. (it beeps when the sound is max) after 30 - 40 seconds... yay! The screen is on! It's totally the same all the time. It needs time to turn on?
Is it a software problem or is my screen about to break down?
Thanks again!!
it's a software problem. You can either factory reset, run the trim command if you're running android 4.3, or change to a different ROM.

Help needed asap

Guys i was in my settings a few minutes ago and i came across a feature which enabled me to open up my notifications by just tapping the screen so i enabled it and went to the homescreen to test it! Upon tapping the screen the phone started maing a beeping noise and a blue line started scrolling continously downward on the screen! I cant turn the phone off ! I only seem to be able to reboot it which doesnt help! I needto power the phone off i assume and then maybe do a hard reset??? Advice needed please
anyone?
What setting did you access I don't believe anybody will be able to help if we don't know where you went and what you changed. The things you mention are very vague and don't really paint a picture of what is happening.
Also if you want to turn the phone off without using the on screen settings just hold onto the power button for about 10 seconds it should turn off, after that hold power, home button, and volume up to go into recovery to reset or what ever it is you please.
Also is it showing you an X and Y axis? If so then you just go into settings, developer settings, show screen updates and turn that off the grid should go away. I am not sure what your issue is but that seems like the most likely option.

Samsung Galaxy S6 Edge black screen, blue light flashing

I have experienced the dreaded Samsung screen of death, 6 days ago I received a text and saw the blue flashing notification light but minutes later when i picked up the phone, the screen was black and not responsive. I have tried every hard and soft reset option, from holding power button and volume buttons to holding all 4 buttons at the same time but nothing has worked. Does anyone have any other suggestions before i send it away for repair? Will allowing the battery to die have any effect? The light is still flashing six days later.
Try to enter in recovery mode (Phone must be off, then hold volume up, home and power)
Look for message on the bottom on the screen
Did you see any unnormal message, like "error" or something?
If you can't turn off the phone, then restart him, holding for min. 7 seconds volume down and power. If you see a screen reaction, then quickly hold the "recovery mode" sequence.

Galaxy SII - I9100 freezes after start up

I have never used any modifications of software. Only used stock firmware.
My coffee was spilled a little on device. Cleaned it immediately.
Then I got a freeze after boot up. I could see the home screen, but touch screen not responding, "Menu" and "Return" lights continuously lit and not responding. The removal of battery or long press of ON/OFF button was the only method to turn off. But the battery % shown on screen was correct each time. If I called the device, it was offline.
I connected the phone to my computer and it was recognized by windows. I did not transfer any files to phone by odin, but I have Odin application.
I used 3 button combinations to wipe cache, then boot up, but no change.
Then I used 3 button combinations again to return to factory settings and wiping everything. Now I get a solid screen where I need to select language but the menu and return lights a on continuously, and the touch screen does not respond.
So far, I can see that my three hardware buttons, on/off, volume, home buttons are working. Phone also was returned to factory defaults. But the problems continue to be the same. They are: no touch screen reaction, continuously lit menu and return buttons, home (OK) switch not working after boot up.
I have started to think that there might be a hardware problem. I have downloaded the service manual, can solder things, even have a microscope if needed.
Can somebody guide me to check where is the problem please?

After splash screen, screen blank but phone sinks with BT & capacitive lights active

After splash screen, screen blank but phone sinks with BT & capacitive lights active
Today I tried to update my phone to the newest firmware (I think it was .210, but I know it was from August 5th on firmware finder...I know its a long time to wait to update, but I started a new job, moved to a new city, etc. so things have been super crazy). Unfortunately, after flashing with EMUI Flasher, the phone rebooted and then got an update failure. I restarted the phone and waited but the screen was black. However, my smart band paired and if I press the power button, the capacitive button lights turn on, but the screen is blank/black. I have tried rebooting, both regularly holding power for 20 seconds as well as holding the power key with volume up and then volume down. I can reboot into a recovery of sorts and tried to wipe cache and restart, as well as boot into safe mode, but both result in the black screen from before. I can also boot into fastboot, but don't know what I could do to fix this.
Any advice as to how I can save my phone would be really appreciated. I'm really hoping I don't have to wipe the phone.
Please help me!

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