Well I have an issue with my S4 GT-i9505, when it starts up it makes all the right noises and lights up the LEDs but the screen is black and lifeless. I installed Kies and it installed a firmware update, I had already done a factory reset using instructions dealing with no screen access. I have taken it to a non samsung service centre in melbourne and they said it was the motherboard, they claim to have tried several other screens and they didnt work so assumed it is the motherboard, but it is able to be found by PC and Kies and has upgraded to the latest firmware. So i dont think it is the motherboard, still the screen remains blank.
Does anyone know what causes this and if changing the motherboard or is there a graphics card that may fix this.
[?] on board etc
motherboard
Well i found a shop with a test motherboard who slipped it in and the phone worked fine. So now i have to find a motherboard.
Related
I purchased mine from someone who brought several new machines from England. I don't have a warrenty because i didn't purchase it directly and besides i already flashed my rom ages ago with JJ rom instead the O2 one as well already disassemled my machine.
My Exec has the same desease I read many have: Rotating the screen to mini laptop mode being white screen while PDA portait mode is fine.
I disassmbled my machine but apparently there is nothing I can do because the ribbon connecting the LCD to the main unit is ducked up and needs to be replaced.. Probably very cheap and easy to fix if you have that ribbon of course.
I am really pissed off because I don't have that machine in my country and I don't ducking know what to do. Withot the keyvoard my machine is useless. My girlfriend is going to Germany, Munich, Byrn next month and I was thinking maybe there is some kind of hope to get it fixed there on the spot (she's going for only a week).
Or maybe a private lab or something that I can send the machine to, to have it fixed. Right now I'm in Turkey.
Thanks
: please don't swear so much. Keep it respectful!
join the club buddy..i have the same problem..mine happened weird so i thin its a virus
You might be better off using Pocket PC Techs: http://www.pocketpctechs.com/main.asp?unit=HTC_Universal-439&area=repairs
Well guess what, everybody who has the white screen in minilaptop mode, its not a hardware problem. I took mine for repairs and the screen caBLE is fine. The tech opened the device and checked everything. He colcluded it has to be a software issue. I therefore need o2's original rom and do a complete rom flah..maybe low level???
jlforlife said:
Well guess what, everybody who has the white screen in minilaptop mode, its not a hardware problem. I took mine for repairs and the screen caBLE is fine. The tech opened the device and checked everything. He colcluded it has to be a software issue. I therefore need o2's original rom and do a complete rom flah..maybe low level???
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I have to disagree here.. It is ** NOT ** a software issue and that is 100% guarantee I give you. Here's why:
I disassembled my machine.
When the LCD side is disassembled and still connected to battery power I flipped the screen while it is COMPLETE OUT OF THE AXIS this means that the hardware switch that makes the software flip the screen is not connected. I.E. in a normal operation if you flip the screen that way, it would still be considered portrait mode. as there is no detection to know the status of the screen mode (if minilaptop or pda portrait)
The screen turned white.
It is confirmed to be a hardware problem. I also read another message from someone here who had the same problem and got it fixed, apparently just what I thought: The LCD ribbon got a damaged. IT appears flipping the screen many times just 'smashes' the ribbon and teared one or more of the little miniature cables. creating a slightely bad connection whenin minilaptop mode but a good connection while still in portrait mode.
Now MAYBE there is another white screen problem that I'm not aware of. But the one I have and the one the other guy here had are guarateed hardware issue (bad lcd cable ribbon)
yeah, you probable right. Im going to have to sell mine for nothing :evil:
If anyone can offer any advise/assistance, it would be greatly appreciated!!
I have 2 AT&T branded 8525 phones. Both have issues and I assumed I could make one good working phone from them.
Phone 1 had a touchscreen issue. It is not responsive what-so-ever. I tried the credit card trick, cleaning out the edges, hard reset, soft reset, etc... nothing seems to make it respond at all. Reflashed the ROM, but of course I am stuck at the "Touch Screen to Begin" screen.
Phone 2 works just fine, but when plugging in the mini usb charger the screen starts to fade to white (with many vertical lines appearing...but eventually the screen goes to white). If you wiggle the charger, it will clear up, but then go back to the fading white screen. If you leave it long enough on the white screen, it will lock up.
So I thought I could take the known good LCD from phone 2 and put it in phone 1. Yesterday I took both phones apart to do this. I placed the good LCD in the phone that had the possibly bad LCD. Put it all back together and found the touchscreen still does not work . So perhaps the LCD was fine and it was something else. I then decided to just take the motherboard from phone 2 and put it in phone 1 along with the LCD I just replaced (effictively moving the lcd and motherboard over to a new case). Same issue... touchscreen does not work. I assume moving the parts around eliminates a loose connection of some sort. I did make sure the ribbon cables were properly aligned and secured well. I am guessing something is wrong on the motherboard.
Does anyone have an idea of what could be wrong to prevent the touchscreen from working?
Oh...moving both the motherboard and lcd with the whitescreen issue(phone 2) over to the other phone (phone 1) casing didn't change anything at all either...so I assume that is not a connection issue with the cables. I also looked closely at the mini USB connector on the motherboard to see if there was bad solder or something that was making it act up. I am guessing bad hardware in both phones, but was hoping I could somehow make one of these phones work and junk the other. Sounds like I may have to junk both as the cost of parts is probably is silly.
Thanks for any help!!
Eric
Recently i received my phone back from repairs.
They had the mainboard replaced, so when i got it back i checked every feature of the phone to see if everything works fine.
I was astonished when i made a photo and didn't see the famous pink spot i used to have (like many others with a HD2).
I send it in with 1.66 NLD and got it back with the exact same rom so i guess they haven't change anything software related. Furthermore i noticed the cam inside the glass isn't exactly in the middle like i should be.
Could this have solved the pinkspot ? (cam not exactly in the middle ?)
wasnt the pink spot issue resolved with an update, I dont get it anymore, I assumed the updated was cooked into the ROM.
before the repairs i had this specific hotfix installed but you could still see the pinkish spot(furthermore the update was there to compensate a hardware fault, so the problem is still noticeable), but now it is completly gone.
I have what I assume to be a hardware problem here.
I have a i9505 motherboard that won't display any image or accept touch input. I've tried it another phone (where it didn't work either), and tried the motherboard from that phone in both (and that worked in both phones). So far as I can tell the problem is with the motherboard, not the screen.
I'm pretty sure the motherboard's not completely dead, as it makes the startup sound, I can flash an image via Odin, been able to get into ADB both in Philz Touch and Android proper (although can't authorise the connection there), can access files on it when connected to a Windows PC, etc.
Does anyone know where the problem could lie? I'm assuming I should just throw the motherboard away, but would be great if there's some way to fix this. Throwing it away would leave me with a working case/screen I can't use.
Thanks.
Hi,
i bought a factory refurbished I9600F from aliexpress. It worked great for 3 days, then the phone became slow to respond, the screen was flickering in yellow-green tones, and then wouldn't come back on but stay black. (but I would still get notification sounds for incoming messages, the notification LED was still working, and the menu keys also light up when I press home/power).
Pulling the battery fixed the issue once, but the problem came back after 1 hour.
I managed to revive the phone once more by pulling the battery and holding the power button to drain all remaining power in the device. The phone was working again for a few hours, but now it's back to having a black screen and even the power drain method doesn't work anymore...
So i'm guessing that replacing the screen won't fix the issue, since the screen is working just fine for a a while (both image and touch are perfect) - but then somehow there must be some electrical issue that causes the graphics unit to malfunction.
I checked the easily accessible connector to the left side of the battery, but it seems that the screen is mainly connected via flex cables that cannot be accessed unless you heat up your device and pry out the screen.
I have found some information on the internet that pressing hard on the spot where the flex cable connector is might fix the problem, but this didn't work for me.
FYI, I'm running the default Samsung firmware the device shipped with and used Kies + OTA update to get the latest official FW. No rooting or any other mods. Just some regular apps installed.
Any recommendation what I could try to fix this problem? Thank you all!!!
BTW, I have found similar reports on the internet here:
http://forums.androidcentral.com/samsung-galaxy-s5/405238-galaxy-s5-static-screen-won-t-turn.html
But the linked how-to-fix guide states that heating up the display assembly is only recommended on devices with a broken screen... So now I don't want to risk breaking my working screen.
So mainly my options are
a) open the device to check the flex cable connection
b) buy a new battery to see if that solves if (some people have reported success with a different battery)
c) buy a new screen assembly on aliexpress for around €135 and hope that a new screen will fix it...
Thoughts?
wutzin said:
So mainly my options are
a) open the device to check the flex cable connection
b) buy a new battery to see if that solves if (some people have reported success with a different battery)
c) buy a new screen assembly on aliexpress for around €135 and hope that a new screen will fix it...
Thoughts?
Click to expand...
Click to collapse
Hello, how did you solve this? I currently have the same problem.
gustav9797 said:
Hello, how did you solve this? I currently have the same problem.
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Click to collapse
sorry, i actually never was able to get this resolved. I tried removing the screen to get to the flex cable, but broke the screen because I hadn't heated up the glue enough...
Had to buy another device.
Sorry I don't have better news...
wutzin said:
sorry, i actually never was able to get this resolved. I tried removing the screen to get to the flex cable, but broke the screen because I hadn't heated up the glue enough...
Had to buy another device.
Sorry I don't have better news...
Click to expand...
Click to collapse
I'm going find out the cause for this issue. I've disassembled one device that only lights up when it is warm. If I put it in the cooler it refuses to light up for some time after that. I tried placing only the screen in the cooler, also only the phone body in the cooler, but couldn't find any difference doing this as it refuses to light up both times for a couple of minutes then it works great again.
I've ordered another device that had its screen shattered so I will try my current screen on that device.
It could be some internal hardware fault in the mobo, it could be the LCD connector having a bad connection somehow, it could be the screen assembly itself, but I will find out eventually.
I've seen many places on the internet where people say this is a software issue. There is a very simple answer to that question. How could it be a software issue if not even the boot logo shows up when you start the phone?
I will keep this thread updated.
Verified that this is a problem with the motherboard. What circuit on the motherboard could have problems with cold temperatures? The main power one? If so, I will try replacing it with a different one.
Update: Was not able to fix it. Motherboard is now scrap.