Hello xda dev!
I bought a used One S z520, the seller said it's in very good condition, and there are no problems with it. When I finally got it, i noticed, that it really is in a good condition, no signs of use, the screen is clear, no scratches, even the outer shell shows no signs of use.
I turned the phone on, and wanted to connect to WiFi, but the keyboard wouldn't work on the left side (Q, A, Z, Shift etc). Then I noticed the touchscreen is dead on the whole left side. So I used ScreenTouch Test to determine where the dead spots are. And, well...
<PLEASE CHECK PICTURE IN ATTACHMENT>
This seemed very strange, because it doesn't look like these are random dead spots, but more like the screen calibration is way off... I tried resetting the calibration, but that did nothing. Then I went to the bootloader...
The bootloader was "LOCKED", but the phone was s-off and SuperCID'ed, yet it still was using a stock rom, which seemed strange to me, like someone did a hackjob returning the phone to a stock state for selling...
So here is my question: is it possible, that someone installed something wrong (I don't know, firmware, kernel, anything) and I can repair the touchscreen by replacing some part of the software? Or is it a hardware problem, and the touchscreen is dead and I should return the phone to the guy? I would much rather make it work, not go the easy way of returning, but if that is impossible...
Related
Hi all,
I am at my wits end on this problem if anyone can offer any adivice it would be greatly appreciated. So let me give a recap of what has occured thus far. The water damage tag for some reason turn pink thus i am unable to get warranty exchange. I am pretty certain that the phone has never been expose to any water of anything of that sort, but i do live in houston, tx so might be humidity or what not that cause the tag to turn. Anyways.
1. This all started after i flashed RRE 5.2 RC3. Initially after a successful flash everything seem normal and fine. Then next morning i woke up to a frozen screen with many verticial lines running up and down the screen was almost unreadable. Initially i thought it was a bad flash or just random lock up. I did a hard reset and tried to enter the bootloader. Black screen, it does seem like the backlight is coming up but nothing on the screen. I can hear the phone power on and boot successfully into windows. Activesync connects i can browse the contents of the phone.
2. After flashing to stock att rom and stock htc roms same symptoms. So at this point i am thinking crap bad LCD screen. so I ordered both the digitizer and lcd screen for good measure. I replaced them hoping that a bad LCD was all. replaced both screens and i powered on the phone. same problem. black screen. The phone still powers on and boots into windows. Activesync still connects and i cna still reflash the phone.
3. I work extensively and do both desktop pc and notebook repair. I am not new to dealing with small electronic repairs. but at this juncture i am unable to identify the cause of hte malfunction. i am hoping maybe some of the gurus here might be able to shine some light on the subject.
Thanks in advance for any help.
I would have followed the same approach; your description makes it sound like it might be some kind of backlighting issue at first read. I'm inclined to think it might be a cold connection (bad connector) on the main board.
Silly question, what happens if you power up the phone with the keyboard exposed?
*EDIT* Not sure if you have been here yet: http://www.mikechannon.net/
Cheers,
i just tried to power up the phone with keyboard exposed. Powers up the same as with the keyboard hidden. Still boots up fine but black screen. I already have the service manuel dowloaded. i have checked around with several repair places both local and on the web. Seems like no one has any parts for the att fuze/touch pro gsm except for the lcd and digitizer and a speaker.
its quite possible that it is a main board but as the same time it might be something as simple as a ribbon cable. i have contacted htc about doing a possible repair and they want wayyyy too much for just a main board repair almost $400 USD.
Anyone have a bricked/ non working touch pro they would like to sell ? =P
fkoong said:
its quite possible that it is a main board but as the same time it might be something as simple as a ribbon cable.
Click to expand...
Click to collapse
Could be a bad ribbon cable ... and firmly pressing around the front/back of the unit shows no change?
pressing the phone front and back show no changes to display. in a very dark room I can see that there is light emitting from the display but its just the screen is not displaying anything visable. this occured both before and after i changed out the screens. I'll do another visual inspection of all the boards to see if there is any bad resistors burnt out circuits etc.. but i didn't notice anything mentionable during my first 2 inspections. Maybe 3rd time is the charm.
Thanks for all the feedback thus far Hilaireg it is quite appreciated. All this venting has at least made me feel 1000% better than after i replaced my lcd and still same problem at least i don't feel like a complete idiot!
Sorry I couldn't be of much help ... you've done all the steps a seasoned hardware person would do.
Do post back to let other folks know if you get it back up and running.
Cheers,
you have a pm fkoong.
I have possibly the same problem. Phone got wet, dried it out for 2 days (in a container of rice). Phone worked but had "water marks" on screen that disappeared after two days and everything was fine for about 2 weeks. Then one day (happened to be humid misting rain eve in Charleston) the screen is blank (hint of backlight only). A soft reset and it seems OK for about 1hr, then blank again. The hard resest screen displayed OK (readbale text etc), but didnt work. But as I write this, I retry to document it results correctly and the NATF ROM is reloading and the screen works! We will see how long!!
Well.. not that long, the end of the ROM load and it went blank again, seems like a video driver problem. The Press VoluP to boot does show some red artifact.
Trying hard reset again (No SIM no uSD)
The NATF v4.4 loads and gives me the Tap screen, Align Screen, stylus, loads customization, opera, tf3d, then loads a bunch of files under ...... and then the screen goes blank again, seem like what happened last time, so Ill try loading a fresh ROM copy... later
Firstly, my screen does not show visuals. I can still touch the screen and make things happen, but it is just a back-lighted black screen. I have answered calls on it and such. Basically I'm returning it and getting a new one.
Since I am getting a new one, I want to see if anyone ever heard of this problem and to see what the cause of it is, for prevention purposes.
I didn't get it wet (the white sticker in the back is still white.) Though I have flashed PROven ROM to it a couple months ago (it's a great ROM by the way), but could that have messed up my screen?
I also wanted to know since I can't see the screen, would I have to, for warranty purposes, (blindly) reflash to the Stock ROM?
Thanks in advance!
Yeah, you probably oughta return it to stock configuration (good luck on that!). If you're really lucky, that might even fix the problem. Have you done a hard reset yet? Might be worth a try, although it certainly sounds like a hardware problem.
Sounds like the flex cable has gone bad
Exactly same thing happened to me this Tuesday. Luckly I backed up info to memory card using PimBackupV2.8 with remote control software on my PC. With the remote contol tool, I could see everything as if on my phone and icons are clickable.
Hard reset did not fix the issue. I then flashed the shipped official ROM and stock SPL for warranty purpose. Will send the phone to them today for repair.
mine also like that..
from vodafone also..
the things that make me panics is the phone become hotter and hotter.
asdiqa said:
mine also like that..
from vodafone also..
the things that make me panics is the phone become hotter and hotter.
Click to expand...
Click to collapse
Summer is coming...
Sometimes they make updating phones too easy......
The back of my phone often gets hot I have to use the edges to hold it even though it was not a hot day and it is in my pocket.
blank screen
ya so my screen is blank white
but everything else works
i've heard something about this being a faulty "flex cable"
how can i fix this?
thanks so much for your help
how do i fix this???
did you eventually find out how to fix this/???
u ever end up fixing that? how?
thankss
Mine was still in warranty so I rang Vodafone. They sent me a special delivery envelop the following day. I sent it back to them. The following day I got a text message from them saying they got it and was working on it to fix the fault. The next day received another message saying the device was on the way back to me and I should receive it the following day.
Actually they sent me back a replacement
So.. basically.. is this a faulty flex thing?
I had the same problem for the last week until today i was about to buy another one since i dont have any warranty for this one.. I searched google and saw somebody say that just putting a business card between the keyboard and the lcd and then slide it and it works so far
hope it helps everybody
Ack! my Fuze, which I got off eBay a few months back, just went black too.
I'm not exactly sure whether it's the LCD or the flex cable, but the fact that the D-pad backlight also has become intermittent makes me think it's the cable.
So has anyone attempted the flex cable repair themselves? I see you can buy the cable for around $40 and the LCD for around $80 from Hong Kong.
Maybe this is a sign I should just get an Android device.
eelpout said:
Ack! my Fuze, which I got off eBay a few months back, just went black too.
I'm not exactly sure whether it's the LCD or the flex cable, but the fact that the D-pad backlight also has become intermittent makes me think it's the cable.
So has anyone attempted the flex cable repair themselves? I see you can buy the cable for around $40 and the LCD for around $80 from Hong Kong.
Maybe this is a sign I should just get an Android device.
Click to expand...
Click to collapse
Did you end up fixing it? I have the same problem.
same thing happened to me Twice.... in my sleep overnight. I LOOOOOOOOVe my raphael but man this was the last straw
This maybe of some help for those of you with blank screens. I bought a Touch Pro on ebay that had a very dark screen, occasionally you could just make out some icons being displayed. Using Mymobiler showed that the basic system was working, as was the touchscreen. Other symptoms were that the camera would not work and the keypad lighting was intermittent. Sometimes on connection to Mymobiler a dialog box would come up saying there was an error with Microp?!?
Despite cleaning all internal connections and ensuring they were correctly and securely made the problem remained. I then noticed that the small camera used for video calls (in a socket on the main flex cable) looked very dirty and corroded. I removed the camera module and, using a fibreglass brush, cleaned the contacts on both the socket and the camera module. These were very badly corroded with verdigris.
On putting everything back together I was most surprised to find the screen was now working, as was the main camera. Unfortunately the ROM that is loaded doesn't seem to have any facility for checking the front video camera. There are still problems with sound - both the loudspeaker and the headphones seem to be dead and I have not had the opportunity to test GPS, Wifi, bluetooth, buttons, etc, however I will keep working on it.
Hope this is of help to someone.
Hello everyone,
Today i installed my parrot bluetooth carkit. And after i connected a couple of times my phone became unstable.
So unstable that i'm not able to tap the screen.....
I don't know what happened due that i have hard resetted the phone a couple of times and even switched from m-rom to energyrom 3.0 with the same results.
Only one thing that was strange is that the touch pro start up screen with the red characters in the right bottom.
That after i flashed m-rom to energy rom that the touch pro characters in the middle were still different like the way that are made in m-rom. With the addition : powered by m-rom
So this means that the phone doesnt format his core
Help please give me any advice.
UPDATE:When backlight is dimmed, it will be bright if i touch it once. Afterwards it will maintain the same.
I have tried several roms and tried to restore my SPL aswell, without any results till now.
I'm getting desperate now. Due that i stays in the screen of ALLIGNMENT, so i'm really not able to start up anything from now.
Have you dropped your device recently?
Try flashing a stock/shipped rom and hard-reset when after flashing the rom when you get to the "Tap here to set up your device" screen.
I have a OIL spot in the screen when i keep it in bright light.
This could be occured when the phone was inside my bag during my beach visit.....
I guess the phone turned liquid by the sun....
Does somebody ever experienced the same issue?
fone_fanatic said:
Have you dropped your device recently?
Try flashing a stock/shipped rom and hard-reset when after flashing the rom when you get to the "Tap here to set up your device" screen.
Click to expand...
Click to collapse
I have a oil spot, and the raster of the phone with little dots in visible in the ligt.
I have made a repair order at HTC.
Which didn't satisfy me at all!
They told me that it is not covered by warranty. I was shocked, this will cost me around 70 euro to fix, and my shop warranty is still valid. So i called the shop to explain this.
And they said if this is not caused by a user, we will change the phone, but first we what to have a diagnose from HTC.
So i decided to let HTC pick up my phone . They will have a repair time of 5 up till 10 days.
That's fair, but i'm not really happy with this situation. Because i think that the screen is the most harmful component. And this means that if this part fails that my phone becomes obsolete.
I will post my conclusion after i got my phone repaired.
I will return to the STOCK spl and the original rom just for warranty purposes.
dont tell them that you spilt anything on it or dropped it. Although they will be able to tell if there is water damage to the device you might get lucky and they won't notice.
Now is the oil spot from leaving it in the sun or suntan lotion getting in the device?
fone_fanatic said:
dont tell them that you spilt anything on it or dropped it. Although they will be able to tell if there is water damage to the device you might get lucky and they won't notice.
Now is the oil spot from leaving it in the sun or suntan lotion getting in the device?
Click to expand...
Click to collapse
Nope nothing happened at all.
Thats the strange thing about this situation.
I was in the shadow of the sun and the bags were only filled with clothes. So it didn't drop or something else.
I was able to use my phone during the day.... and was getting more unresponsive during the time that went by.
So i will not accept any blame of myself, due that i have a warranty of 1 year from the factory which will not cover your display :S
But also have the store warranty... So i told the store that i will return the phone if there are any costs.
The store told me that they will wait on the diagnose of HTC which i have sent it to myself to reduce the time.
If the diagnose tells that it's not my fault, then i can return my phone probably.... He couldn't promise it due that i want to see the diagnose first.
So I will wait on HTC's conclusion.... And i'm afraid that they will try to blame me for it....
They better not I will be a pain in there arses
Hello, I have exactly the same problem. After flashing from energyrom 3.0 to Aurora, a few hours later, i couldn't get my phone out of lock. (slide a button to the right or left on your touchscreen)
I tried a soft reset, but the phone started up with the same locked screen. So, i tried a hard reset. From that moment on i got stuck at "align screen". I ve flashed several times with several ROM's but nothing. (by the way, whatever rom i install, the first screen always says: Energyrom by NTGZ28)
I used the trick to paste welcome.not on the micro card, to bypass the align screen. That works, but the touch screen doesn't work. I 've removed the protection of the screen, but that doesn't make a difference either. My device didn't fall, came into contact with water or anything that could harm the thing. Oh, when the backlight is dimmed, the screen reacts to tapping it. Please help me out ??
resolt the issue. Because of a lot scraches (spelled ok?), i removed the protective screen. When i put the new screen on, everything worked !
hivesnl said:
I have a OIL spot
Click to expand...
Click to collapse
i had does as well and then touch screen stopped working..
had to replace digitizer, unfortunately had to replace LCD screen and digitizer at the end (was not able to separate digitizer from LCD)
Ok I've been rooted and modding for almost 2 years now, and this is the first real problem I have had. Just know that ANY suggestions and/or info are appreciated. Ok on with the problem
It looks like the LCD is going out after living with a cracked digitizer for a couple months. first the screen just went grey static and fuzzy. I would put pressure on it, and it would come back and be fine. then it started going completely black, and then i would put pressure on the screen/smack it and it would come back. Now the LCD isn't backlit and is completely nonresponsive.
It seems like it would be a hardware issue, but Im not so sure.. It wasnt doing this at first, but now when I [pull battery and] power on, it gives that short buzz like it does when the splash screen should come up (but doesnt of course), I wait for a minute then it gives that short buzz again, and again like it is in bootloop. The only signs of life are a blinking red LED, vibrating motor, and sometimes if Im lucky the backlight on the 4 keys on the bottom.
I have no access to recovery, bootloader, or splashscreen, and not really sure what to do. Is there a chance that this is a software thing (a kid could wish). If your do believe it is the LCD where is the place to get a cheapest replacement LCD and digitizer? Also could it be a hardware issue to the fatal non-replaceable components?
FYI: rom-eyecandy with bricked kernel not overclocked
So you have damaged hardware? Cracked LCD - I think there is no need to search further for the root cause...
Title explains all. I'm in a tight bind with money too..
I want to believe I can just reflash stock via odin and it will come back. Or is there something else I can do to make this work?
It sense touch 10% of the time, but it's never enough to unlock my phone or do anything with it.
Edit: the new screen worked perfectly before I did the operation. Don't know what went wrong. I didn't scratch or bend anything to my knowledge. The process took about 10 minutes and went really smooth.
kanzenmuketsu said:
Title explains all. I'm in a tight bind with money too..
I want to believe I can just reflash stock via odin and it will come back. Or is there something else I can do to make this work?
It sense touch 10% of the time, but it's never enough to unlock my phone or do anything with it.
Edit: the new screen worked perfectly before I did the operation. Don't know what went wrong. I didn't scratch or bend anything to my knowledge. The process took about 10 minutes and went really smooth.
Click to expand...
Click to collapse
Hello, I repair cellphones for a living. And it depends on a lot of things. My guesses are three things. From most likely to least likely.
1. You said that everything was working fine before you changed ROMS, it could be an incompatibly issue between the screen and the software. A lot of aftermarket screens are mostly compatible with stock, a lot have compatibility with custom ROM. It could be an issue solely on the software and not related to the screen.
2. There isn't a solid connection on the LCD connector, that usually happens with during installation, sometimes if the device is set down hard or dropped knocking the connection loose.
3. It's a defective screen. It happens sometimes. It's not uncommon for a screen to appear fine but after a few hours it acts up. It could have just been a coincidence that you noticed or went defective when you flashed (not saying flashing is responsible for this scenario).
Flash back to stock and then you'll have a great chance of to see which out of the 3 are responsible. Cheers.
I repair iphones, android devices, laptops, ect.
Sent from SM-G900Pkltespr
There are only 2 flex cables on the S5 LCD. Make sure the primary (top flex) is seated correctly, then the easiest thing to check before taking the screen back off is the flex under the battery cover. You will see a little screw near the lower right of the battery with a little cover. Pull up that cover while the battery is out and make sure that cable is seated correctly. If both flex cables are seated correctly then it can only be 1 of 2 things IMHO, the screen you purchased is defective or you bent some pins on the mobo where the flex cables attach. I don't think it's a rom issue.