Hello, so I have a J7 2017 (SM-J730GM/DS) 32 GB Unlocked Dual SIM which has served me well for a while. I ended up dropping the phone at some point in a sliver of time without a case and the screen cracked. After replacing the screen I noticed if the screen was pressed in a certain area it would go crazy and reboot the phone (crazy as in the pixels would do weird things like dimming, going grainy, like the display shorted in some area, then the phone would reboot itself), probably some error on my installation of the screen and the ribbon cables (I can see an area where it looks creased, it never sat flush with the body of the phone as the OEM screen did). I was able to just be careful and not trigger the reboot for some good time until it happened again and the phone would continuously reboot, allowing me to only get back to the OS through the boot menu, selecting "reboot now". That worked for a while until it would never boot into the OS, just looping at the screen where it says the phone name, where it would vibrate, go black, and go back to the phone name screen. I gave up trying to fix it, as I had a backup phone, and just now had some ideas. I figure the OS is corrupted in some way, I am no master in knowing the details on how phone boots up and such, so I did some research and successfully flashed the most recent ROM onto the phone using Odin 3.14. It still doesn't stop the looping, unfortunately.
Any ideas? I hear people talking about using TWRP or something to do things boot related, but I don't want to possibly mess anything up further nor do I know what they were talking about.
Thanks,
Stella
Related
ok here's what's going on perhaps someone can figure out what's wrong. Last night I had placed my mda on its charger like usual b4 bed. well sonce my battery cover is slightly broken I had placed a some cardboard within the battery door due to the fact that it would "white screen" then rest and get stuck at the loading screen and drain my battery, anyhoo.... well it whitescreened cause my dresser rocked due to my cat stepping on my phone. so I reset it as usual and the splash screen would load then fade to white. after several attempts it finally started to load as usual but then it went to the boot loaderscreen. I had reset it several more times but no luck. I took out the mobo to see if something was stuck and again nope. luckly I had an older mobo that wouldent charge so I had replaced the mobo but does anyone know why it would randomly get stuck on the boot loader screen? I had even did a hard reset in the device and still no luck. if it was a normal computer I would say that it had lost it's OS any ideas on how to fix it so I can get back my phone the way it should be?
-rastlin
update on bootloader
well I was able to aquire tmobiles flasher utility and I attemted to flash the unit to no luck. I went through all the steps and it gave me an error that it cannot retreive data from the device. ok now I am totally stumped. I am open to any and all suggestions
-rastlin
I have obtained a water damaged Lumia 520. I opened it up and dried it while also clearing any oxidation from the various contact points. The phone displayed the bolt+gear icon on screen but the screen kept flashing and fading. I figured the phone needed the firmware to be reflashed so I downloaded the software recovery tool and it detected the phone and flashed the firmware without error. Then the phone actually worked albeit with a black screen, I could hear the little noises and stuff so it was working under the black screen. I figured that maybe the screen could be salvaged by cleaning the contacts and letting it dry up completely, but after I put the phone together it wouldn't work anymore at all, it basically turns on for a few seconds and turns itself off. The software recovery finds it and I can reflash the firmware but it still doesn't work. I tried checking all the internal connectors but now there doesn't seem to be any way to make it work even with the dead screen.
Is there something I need to touch on screen to make it work? I never had a Windows Phone so I don't really know and I can't see the screen. And do you geniuses know what might be wrong with it and how can I tell if it's just the LCD that has been killed by the water or if the motherboad might be FUBAR as well? What could be causing it to turn off after a few seconds? The battery is definitely not dead as I left it to charge for a long time.
Actually I just managed to "fix" it. The screen comes on after I cleaned the contacts and messed with it a bit, it just looks really bad and it's full of line but I can see what's on screen and use the phone. My issue now is that the bolt+gear icon appears at every reboot and doesn't go away. The only way I have to boot the phone normally is to hold camera and volume down after I reboot it. What does this mean? Other than that the phone seems to be working perfectly once it actually boots.
I just managed to bring it back to life completely. Screen contacts were water damaged but I managed to get them working again and now the screen is perfect. It kept getting stuck on the bolt+gear icon after every reboot because the volume+ button was stuck but I managed to unstuck it and now the phone is perfect. So yeah if you have a flashing screen after water damage check the contacts, if your phone doesn't boot and keeps getting stuck on that icon try to unstuck the volume+ button.
Hi,
After Xmas I made factory reset with TWRP and I made an upgrade to CM13.(6.0)
It was working fine.
When I was trying to make next daily update, after reboot, screen became black and nothing shown up.
I was trying a lot of things since that moment.
When I was going back from service point (I really want to sort it out) when they told me it is probably LCD broken (i have broken glass, but 1 year ago, so I do not believe it can be screen),
when I take phone out I spotted that keys are highlighted so I swiped and it locked out and shown screen! it was working perferctly fine,
so I decided that it is best moment to flash newest CM to solve issues, but after reboot screen was black again.
I can enter download mode so it is visible in Odin, but screen is black in every mode.
There is only quick flash on screen when turning on and also really short moment of Samsung Galaxy logo which becoming dark quite quickly.
I flashed stock rom(5.0), but nothing changed, despite of that I know phone is turning on somehow because I hear music on turning on...
Can someone help?
I really doubt that it can be hardware issue.
Can it be something with BL ? How can I solve it...?
Hello i have a question regarding my recently water damaged galaxy grand prime (rather not discuss how it got wet) but the top portion of my phone got submerged. I immediately removed the battery and vacuumed out water for a few minutes, tested it to see if it would power on (i know, too soon. So stupid) and to my dismay the camera flashed upon the battery touching the connectors inside the phone so im guessing something shorted there. I proceeded to let it sit in rice for the day but i dont have much patience and was missing using my device with cm12.1 flashed and kept checking it every 4-5 hours or so. So at the end of the day i took it out the bag of rice, powered it on, and everything was functioning as it should, besides a little screen flickering which has disappeared entirely now. But here and there and random times im not using my phone, it will restart and get stuck on the "Samsung Galaxy Grand Prime Powered By Android" screen. It wont make it to the boot animation or even go into recovery, but it will boot download mode. So after pulling the battery a dozen times i finally get it to boot again and i go into recovery and try repairing the system with TWRP repair or replace file system option thinking it could probably help. But to this point my phone still restarts by itself and gets stuck on the logo screen here and there and i have to fight it to boot system. Could somebody please help me out here? I hope it isnt a hardware failure and just some software corruption i can fix by factory resetting and re-flashing the rom. Any help is highly appreciated. Oh and i forgot to mention my camera definitely shorted somewhere only the rear works and if i try to switch to front it cant connect. This happens in snapchat and the cameranextmod cyanogen camera. My stock one stopped entirely.
If your phone got submerged, i'm afraid it'll damage the hardware, sorry bro, you'll have to let it go
I've had a VS995 for about two months. One of the first things I did when I got it was root(dirty santa) and install custom firmware. After doing this I noticed that watching any type of video on the phone would lag extremly bad (<10 fps), unless I held my finger on the screen, and I would get different screen glitches (turn black, turn all static, half and half, etc). I then decided to go back to stock so I flashed a stock KDZ with lgup. This didn't fix the problem. After several weeks of putting up with it, It's gotten to the point where the phone is unusable. It freezes constantly. To get the screen to unfreeze I have to lock then unlock the screen, and half the time it freezes again instantly. Attempting to watch a video (or even a GIF) stutters and chokes after 1-2s and turns the whole screen into static.
At first I was thinking something might be corrupted so today I re-rooted but once I tried to get into twrp the screen kept turning to static. So I flashed back to stock KDZ with no change in performance. Also I can not boot into recovery or fastboot, I've tried several times. Does KDZ upgrade also flash the bootloader?
I'm starting to think it might be something bad on the main board, has anyone ever reflowed one?
I bought the phone used online and it only came with a 30 day warrenty, so no luck there.
Any input would be greatly appreciated.
Thank you
SmokeyMP said:
I've had a VS995 for about two months. One of the first things I did when I got it was root(dirty santa) and install custom firmware. After doing this I noticed that watching any type of video on the phone would lag extremly bad (<10 fps), unless I held my finger on the screen, and I would get different screen glitches (turn black, turn all static, half and half, etc). I then decided to go back to stock so I flashed a stock KDZ with lgup. This didn't fix the problem. After several weeks of putting up with it, It's gotten to the point where the phone is unusable. It freezes constantly. To get the screen to unfreeze I have to lock then unlock the screen, and half the time it freezes again instantly. Attempting to watch a video (or even a GIF) stutters and chokes after 1-2s and turns the whole screen into static.
At first I was thinking something might be corrupted so today I re-rooted but once I tried to get into twrp the screen kept turning to static. So I flashed back to stock KDZ with no change in performance. Also I can not boot into recovery or fastboot, I've tried several times. Does KDZ upgrade also flash the bootloader?
I'm starting to think it might be something bad on the main board, has anyone ever reflowed one?
I bought the phone used online and it only came with a 30 day warrenty, so no luck there.
Any input would be greatly appreciated.
Thank you
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Yes upgrade in lgup flashes EVERYthing, bootloader, modem, recovery, even the download mode partition. Have to use partition dl mode to be picky (needs the modified lg up files from the mismatched variant thread). The static screen sounds like you need a custom kernel or a new twrp, depending on where its occuring (its related to the dirtysanta bootloader and theres workarounds to fix it builtinto custom kernels and recent twrp)
It's prolly water damage. My V20 was doing exactly the same thing after rooting. I opened the phone and noticed the LCD plug to the Mobo had corrosion on it, I unplugged the LCD from the Mobo and got a clean cheap brand new toothbrush and gently brushed and blew debris off then followed with cleaning with a ear Qtip with a bit of alcohol. Check the seal around the LCD and make sure any gaps are closed with slices of clear tape. I don't know how rooting messed up my phone, it's something strange with resetting the phone, the glitches kicked in from the corrosion on the gold parts. After my first boot from cleaning, my phone was totally normal again. A month later I got screen retention..... Lol but that's a whole other Obvious story everybody shares and knows about lol. I hope you get your situation solved.