Develop Bugs

Really a weird issue :(

Hi friends, from last week am facing a display issue in my desire z mobile. The display changes the colors when ever i unmask the KB or sometimes even when it masked... when i googled for this problem i came to know that the ribbon cable is loose. so i decided to open the mobile and reconnect the cable. I did everything perfectly, but when i repaired and turned on the mobile , the screen is black.. only after rebooting (by hearing the welcome tone) my menu keys start lighting and by pressing the power key my screen turns on. Even i cant see the boot loader page ..
I think this could be a software issue, but i dont know how operating with the hardware can mess up the software
Friends please guide me

Something is up with the ribbon cable either it came loose again when u were putting back together or its broken.
I actually fixed mine today, it was wearing through the black outer part and was making the screen jump during scrolling and long pressing when only tapping.
I fixed it with a small piece of electrical tape placed over the exposed part. I guess it grounds out once it becomes exposed.
U only have to remove the mother board from the phone to really see most of it.
What exactly did u do? Is there an exposed part of the ribbon from wear and tear?
Sent from my GT-P3110 using xda app-developers app

mymeatb18 said:
Something is up with the ribbon cable either it came loose again when u were putting back together or its broken.
I actually fixed mine today, it was wearing through the black outer part and was making the screen jump during scrolling and long pressing when only tapping.
I fixed it with a small piece of electrical tape placed over the exposed part. I guess it grounds out once it becomes exposed.
U only have to remove the mother board from the phone to really see most of it.
What exactly did u do? Is there an exposed part of the ribbon from wear and tear?
Sent from my GT-P3110 using xda app-developers app
Click to expand...
Click to collapse
there is no physical damage in the ribbon, even i saw the whole connection of the ribbon... no physical damage.
But now, after reconnecting the parts i got another problem to... i cant see any boot animation and boot screen... when i start the mobile it remains black screen and only after hearing the boot tone, again by pressin the power button the screen turns on.. till that the screen is black.. dont know what to do .

U should get a q tip with some rubbing alcohol and clean up the connection and blow on the connection to make sure there is nothing there. Just take our time when u do it u don't wanna mess anything up
Sent from my HTC myTouch 4g using xda app-developers app

mymeatb18 said:
U should get a q tip with some rubbing alcohol and clean up the connection and blow on the connection to make sure there is nothing there. Just take our time when u do it u don't wanna mess anything up
Sent from my HTC myTouch 4g using xda app-developers app
Click to expand...
Click to collapse
sorry i cant get your way of cleaning the connectors. could you please elaborate me the cleaning process? Then bro, still i dont know why i was not able to see the bootloader screen and the bootup animation... but after booting up mobile works fine... so confused

Sorry use a cotton swap dipped in the alcohol to clean the connector on the cable and mother board.
Does the phone have a custom recovery? If so what happens when u boot into it?
Sent from my HTC myTouch 4g using xda app-developers app

mymeatb18 said:
Sorry use a cotton swap dipped in the alcohol to clean the connector on the cable and mother board.
Does the phone have a custom recovery? If so what happens when u boot into it?
Sent from my HTC myTouch 4g using xda app-developers app
Click to expand...
Click to collapse
no it doesnt have any custom recovery. first i come across the screen colour fault, so i rerooted my phone to claim warranty, but unfortunatly i was not able to claim the warranty. so i felt to open the mobile myself and tight the ribbon. After attempting this repair now new problem araised ie i cant even see the bootloader page and boot animation.. but the phone is working fine..
whenever i turn on the mobile the black screen remains , then i will here boot tone then my soft key lights will lighten, then i will press power butto, then my lock screen will pop up. this is my situation.
Dont know what to do
First let me try your cleaning option, but could you advice me something other than the alcohol ?

Alcohol is the best cuz its sterilizes and dries fast. U don't need to soak it just to get the cotton swab wet and shake off excess and dab it on the connections. If u rub it might get cotton stuck. U could also use a keyboard dust blaster or some kind of compressed air to blast away any particles.
The main thing is to make sure u connectors are down all the way and not to have any tension while putting it back together.
If u separate both halves of the phone make sure u connect to the back of the motherboard after u have tightened down the brackets that keep the two pieces together.
Are u trying to avoid having to remove the sticker while loosening the motherboard?
Sent from my HTC myTouch 4g using xda app-developers app

Now the problem getting worse.. after a cleanup with a cotton bud, my touch sensitive fails to work.
:crying:
now the problems are :
* touch not working
* display colours are changed
* cant see the bootloader and boot animation
Please someone help me :crying:
dont know what to do. Its just a 3 month mobile, cant lose it

Ur doing something wrong all ur problems has to do with the cable. That cable connects the screen to the motherboard
Sent from my GT-P3110 using xda app-developers app

I think the proper response is replace the flex cable, they do go bad and for the most part I'm sure you didn't do anything wrong. Technology fails from time to time, about 20$ or so and relatively easy to replace
Sent from my Nexus 7 using xda premium

yes i think i have to replace the cable, but now i think i damaged the digitizer too..so i have to change both the ribbon cable and digitizer.
but i dont know why i cant see the bootloader and the boot animation.
thats my main problem now..
as i want to root my mobile again i need the bootloader page, guys please help me on this
then anyone having a desire z for sales?? (2nd hand sales ?)

I would probably just replace the ribbon cable before doing anything else digitizer is tied into the ribbon cable as well.
Sent from my HTC myTouch 4g using xda app-developers app

mymeatb18 said:
I would probably just replace the ribbon cable before doing anything else digitizer is tied into the ribbon cable as well.
Sent from my HTC myTouch 4g using xda app-developers app
Click to expand...
Click to collapse
but whats my question is, if i change the cable, will it solve my bootloader issue?

Most likely
Sent from my HTC myTouch 4g using xda app-developers app

Hey,
unfortunetly i can't post in develpment so i'll write it here, maybe someone will put this post there
recently i've installed on my HTC Desire Z CM10.1 but there is some i think unknown issue:
when i'm taking picture with HDR option selected
- first picture is taken well
- but in the next try, i've got informaction HDR processing and suddenly cam application is exiting, when i check in my album folder i've got 3 different pictures(with different expose time) and one whole gray(maybe this one should appear when HDR combine those 3 picture into one but it never happens, it works fine only at first try)
if anyone could please post this message into:
http://forum.xda-developers.com/showthread.php?t=2031678
thx

boskras said:
Hey,
unfortunetly i can't post in develpment so i'll write it here, maybe someone will put this post there
recently i've installed on my HTC Desire Z CM10.1 but there is some i think unknown issue:
when i'm taking picture with HDR option selected
- first picture is taken well
- but in the next try, i've got informaction HDR processing and suddenly cam application is exiting, when i check in my album folder i've got 3 different pictures(with different expose time) and one whole gray(maybe this one should appear when HDR combine those 3 picture into one but it never happens, it works fine only at first try)
if anyone could please post this message into:
http://forum.xda-developers.com/showthread.php?t=2031678
thx
Click to expand...
Click to collapse
I too had the same issue.. I think the HDR option is not working in that ROM, so you better turn off the HDR.

I apologize for my english, i'm french..
I've the same problem. After a 1 meter-fall, it fell to the ground flat. Since, it doesn't work.
When i press the power button, the phone seems to start : vibration, and the sensitives touchs light. But i can't see anything on the screen, it stay black...
Do you think it can be the LCD screen to repair or the ribon cable ? If it was the ribbon cable, the sensitves touchs didn't turn on, don't you think ?
Thanks for your help, and again i'm sorry for my basic english..!

alexis90 said:
I apologize for my english, i'm french..
I've the same problem. After a 1 meter-fall, it fell to the ground flat. Since, it doesn't work.
When i press the power button, the phone seems to start : vibration, and the sensitives touchs light. But i can't see anything on the screen, it stay black...
Do you think it can be the LCD screen to repair or the ribon cable ? If it was the ribbon cable, the sensitves touchs didn't turn on, don't you think ?
Thanks for your help, and again i'm sorry for my basic english..!
Click to expand...
Click to collapse
We cant guess it without testing. In my case i first faced problems regarding ribbon cable and slowly the prob builds up and now my screen is full back. But in your case it is most likely to be the lcd part.
So, better you make a test about it by swapping it into another phone or so..
then one more thing, even if the ribbon cable fails some part of it may work like sensitive light and touch..

I had the same problem. Just get the cable replaced.

i bought a note 2.. to repair.. but water damage

hi...guys...
i bought a note 2 tmobile version, it said "to repair" has a bad digitizer etc etc...ok so far...i thought.. i buy a new lcd and it'll be ok.. but the thing in this phone is that i read " battery water damage has been activated" and its like i didnt read it. according to the item description. the phone charge the battery, turn on (the buttons lights up but need a new lcd/digitizer in order to see the display working) and you can see the phone files on the pc.... obiously i made a big mistake here... the question that comes to me: it is possible that the phone still works, (or is there a possibility to fix it), i mean.. a phone with water damage turn on, charge and can it be plugged in the pc? i dont have the phone yet..

It's unlikely to work, but try placing the phone inside of a bag dry rice for a day or 2. It draws moisture out of the phone.
Also, maybe it is only the battery that is damaged, not the phone.
I am unsure about how to fix water damaged phones though. Hopefully you get it working, sorry about your phone

Androideka5 said:
It's unlikely to work, but try placing the phone inside of a bag dry rice for a day or 2. It draws moisture out of the phone.
Also, maybe it is only the battery that is damaged, not the phone.
I am unsure about how to fix water damaged phones though. Hopefully you get it working, sorry about your phone
Click to expand...
Click to collapse
thats the first thing im gonna do man, disassemble the phone and put it in rice... hope that works :crying:

If it turns on and connects to a computer it may be okay. It seems to at least power up now there is issues like will the mic and speakers be okay
Sent from my SGH-T889 using xda app-developers app

kintwofan said:
If it turns on and connects to a computer it may be okay. It seems to at least power up now there is issues like will the mic and speakers be okay
Sent from my SGH-T889 using xda app-developers app
Click to expand...
Click to collapse
+1, it's internals are working if it powers on, so we known it's not completely broken

kintwofan said:
If it turns on and connects to a computer it may be okay. It seems to at least power up now there is issues like will the mic and speakers be okay
Sent from my SGH-T889 using xda app-developers app
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Click to collapse
Androideka5 said:
+1, it's internals are working if it powers on, so we known it's not completely broken
Click to expand...
Click to collapse
i hope you guys be right, i sent him a message and here is the answer :
the water marker on the phone is pink but the one on the battery is fine. I bought this from someone as is. All I know is it seems to work. Computer recognized it, charger light works, and menu buttons light up when pressed. Haven't heard sounds from it but I assumed the volume is turned down

It might just be ok man just try to fix it and see
Sent from my SGH-T889 using Tapatalk 4 Beta

Rice is really poor dessicant. It's better than nothing but if you can get your hands on a good amount of silica gel that would be better. Dell ships their pc's with a big bag of silica gel in the box. Check your local best buy and see if they have any that they pulled from pc boxes that you can have. If not, you might be able to get it at home depot or Lowe's or maybe a shipping store like the UPS or FedEx store.
Sent from my SGH-T889 using xda premium

janjannsen99 said:
It might just be ok man just try to fix it and see
Sent from my SGH-T889 using Tapatalk 4 Beta
Click to expand...
Click to collapse
moto211 said:
Rice is really poor dessicant. It's better than nothing but if you can get your hands on a good amount of silica gel that would be better. Dell ships their pc's with a big bag of silica gel in the box. Check your local best buy and see if they have any that they pulled from pc boxes that you can have. If not, you might be able to get it at home depot or Lowe's or maybe a shipping store like the UPS or FedEx store.
Sent from my SGH-T889 using xda premium
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Click to collapse
yeah.. i wanna believe the water damage marker activated didnt cause some serious damage in the note, ...as our friend kintwofan mentioned, may be the damage was only the speaker/microphone.. anyway im gonna do the rice thing....
when i get the phone, i will fix the and post some pictures....

galaxy note 2 completely dead

Hi I have a note 2 and replaced the screen completely before that the phone was working perfectly. I assembled everything back checked that everything was connected putted the battery tried to turned on and nothing. I also connected to the charger and still nothing no charging doesn't boot up. What could be happening here I double checked everything and nothing is missing if anyone could help me I'll appreciate it

Random guess, but like a computer you could have had static electricity and not grounded prior to working and fried your motherboard
Sent from my SGH-T889 using xda app-developers app

man this is scary as I broke my screen on july 4th and is waiting for my replacement screen to arrive. I'm going to try to replace the screen myself. Maybe you broke a wire or something while you were detaching the screen from the digitizer.
Now i'm nervous about doing the screen replacement myself...oh wells, gotta save some money...lol

I think I know why it doesn't work is because I'm trying to use the n7100 screen on my sgh-t889 this version of t-mobile uses the n7105 screen and I bought the wrong one. That's why it won't work

Deleted

I'm talking about the lcd display

elcompi87 said:
Hi I have a note 2 and replaced the screen completely before that the phone was working perfectly. I assembled everything back checked that everything was connected putted the battery tried to turned on and nothing. I also connected to the charger and still nothing no charging doesn't boot up. What could be happening here I double checked everything and nothing is missing if anyone could help me I'll appreciate it
Click to expand...
Click to collapse
Well, I hate to point out the obvious, but apparently that is not the case.
Did you wear some type of non-conductive gloves when you were doing this? handling circuitry with bare hands is a big no no. It is very possible that you ruined the device simply by touching it.
Here is what I would do (not anything but troubleshooting to pin point a possible problem really):
Warranty the thing.
Good luck.

elcompi87 said:
I think I know why it doesn't work is because I'm trying to use the n7100 screen on my sgh-t889 this version of t-mobile uses the n7105 screen and I bought the wrong one. That's why it won't work
Click to expand...
Click to collapse
I replaced my wife's phone with the n7100 and its working. Slowly try to back track everything and make sure everything is plugged and not broken. Was ut workibg before you replace it.
Sent from my SGH-T889 using xda app-developers app

e46tuning said:
I replaced my wife's phone with the n7100 and its working. Slowly try to back track everything and make sure everything is plugged and not broken. Was ut workibg before you replace it.
Sent from my SGH-T889 using xda app-developers app
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Click to collapse
and it receives 4G? I don't know if that has to do something with the signal but it says in the back 3g so I wanna be sure

Admiral Sir Manley Power said:
Well, I hate to point out the obvious, but apparently that is not the case.
Did you wear some type of non-conductive gloves when you were doing this? handling circuitry with bare hands is a big no no. It is very possible that you ruined the device simply by touching it.
Here is what I would do (not anything but troubleshooting to pin point a possible problem really):
Warranty the thing.
Good luck.
Click to expand...
Click to collapse
Agreed. .. except the warranty part. Samsung wore their gloves when building. It was the op that didn't.
Sent from my SGH-T889 using xda app-developers app

Well here are my results the motherboard is not defective because I switched to another note 2 from tmobile and booted perfectly . I'm starting to think that the lcd display is defective

elcompi87 said:
and it receives 4G? I don't know if that has to do something with the signal but it says in the back 3g so I wanna be sure
Click to expand...
Click to collapse
Yea it has 4g although its on lte
Sent from my SGH-T889 using xda app-developers app

maybe a defective part..
How do you know the replacement screen is not bad itself..
have you tried connecting it to the computer and getting into download mode or seeing if the phone is ACTUALLY Working..Also a bad or cheap lcd could have shorted something out if you are sure you did not do so replacing it..
Sorry for your luck but it sounds like you need another note 2 phone for some testing. or RMA THE LCD and try another .
Good LUCK

Particular region of the screen doesn't respond to touch at all.

Hello,
2 weeks before I got water in my phone (xperia S), but now it's dried up. Everything's working properly but I'm facing a certain problem. A particular region/area of he screen doesn't respond to touch at all. Though there's no deformation in the display. Could you please help me out. I've tried a hard reset, rebooting, drying it up with a dryer, reinstalling the os and all. But still no good. I face many problems while choosing options like can't delete any messages. Even going to the landscape mode doesn't help. Please do help. :/

hmmmm
water damage, you may have to replace the screen
the part that got wet shorted out and now doesn't work
Sent from my LT26i using XDA Premium 4 mobile app

I have it, restart seems to fix that problem.
Sent from my LT26i using xda app-developers app

electrash said:
I have it, restart seems to fix that problem.
Sent from my LT26i using xda app-developers app
Click to expand...
Click to collapse
I tried rebooting several times. But no good. If the LCD's damaged then won't the display should also has been dispersed?

try to clean screen with alcohol or something for glass.
This sometimes occure when screen is dirty on some places, good clean may also fix that.
Im telling this from my experience.
If nothing helps, try to get it on warranty if you still have it.

eki_saurav said:
I tried rebooting several times. But no good. If the LCD's damaged then won't the display should also has been dispersed?
Click to expand...
Click to collapse
Never use drier on a wet phone as it might damage internal circuits. Water damage is something that is totally unpredictable. that part of screen might start working in a few days or a few hours or not at all ever. I'd suggest wait it out for a few days. If the problem doesn't get auto corrected,then you will have to take it for repairs(A water damaged phone's days are numbered though,no matter what you do)

Does the ok/cancel button show problem only? If you scroll wallpaper through that region, does it work?
Sent from my Xperia SL

entermetallica said:
Does the ok/cancel button show problem only? If you scroll wallpaper through that region, does it work?
Sent from my Xperia SL
Click to expand...
Click to collapse
Yes, that's the only problem. And, no it doesn't works if I tap on the region, it recognizes the tap on either above/ below area and acts accordingly.

Dark Wraith said:
Never use drier on a wet phone as it might damage internal circuits. Water damage is something that is totally unpredictable. that part of screen might start working in a few days or a few hours or not at all ever. I'd suggest wait it out for a few days. If the problem doesn't get auto corrected,then you will have to take it for repairs(A water damaged phone's days are numbered though,no matter what you do)
Click to expand...
Click to collapse
I didn't know that. It's been nearly a month still no good.

[Q] no backlight

Hello!!
Well suddenly there was no backlight so i guessed it was the LCD.. changed the LCD but nothing..
Ok the next solution was the Ribbon cable!! so ordered that and changed it too... Now the backlight is working again BUT i dont get to see anything other the noise on the lcd.. by noise i mean this grey thing like when the old TVs didnt catch a good signal!!! Does anybody know what I maybe did wrong?? Did i maybe injure the ribbon cable when i tried to squeeze it through the panel?!?! this phone has really cost me a lot of nerves... please help!!!

greek_lover_69 said:
Hello!!
Well suddenly there was no backlight so i guessed it was the LCD.. changed the LCD but nothing..
Ok the next solution was the Ribbon cable!! so ordered that and changed it too... Now the backlight is working again BUT i dont get to see anything other the noise on the lcd.. by noise i mean this grey thing like when the old TVs didnt catch a good signal!!! Does anybody know what I maybe did wrong?? Did i maybe injure the ribbon cable when i tried to squeeze it through the panel?!?! this phone has really cost me a lot of nerves... please help!!!
Click to expand...
Click to collapse
sounds like you messed up installing the ribbon cable and damaged it again. I did the same thing 1st install.
Sent from my LT28i using XDA Free mobile app

psxpetey said:
sounds like you messed up installing the ribbon cable and damaged it again. I did the same thing 1st install.
Sent from my LT28i using XDA Free mobile app
Click to expand...
Click to collapse
thats what i thought.. cause it takes some time to find out the trick to put it through.. maybe I will order a new one.. or just throw the phone through the wall!! might be a solution too!

greek_lover_69 said:
thats what i thought.. cause it takes some time to find out the trick to put it through.. maybe I will order a new one.. or just throw the phone through the wall!! might be a solution too!
Click to expand...
Click to collapse
I made the same mistake shouldve ordered 2 or three at the same time! Thats what I did on my secomd order then if it goes out in a year or two u got extras!
Sent from my LT28i using XDA Free mobile app

I get the same grey grainy screen now !! after 4 years of usage.. when I half open flip and close.. it works again ..

saqibkhan said:
I get the same grey grainy screen now !! after 4 years of usage.. when I half open flip and close.. it works again ..
Click to expand...
Click to collapse
Ribbon cables gone
Sent from my LT28i using XDA Free mobile app

psxpetey said:
Ribbon cables gone
Sent from my LT28i using XDA Free mobile app
Click to expand...
Click to collapse
@Bakisha
hi.
just wanted to chck with you again.. I got a weird problem again.
My phones back camera was not working. giving errors. my friend had a Xperia Play for parts.
I removed that Camera Module and replaced with mine. It started working fine. Cool. I Tried to switch on the Phone while holding the Battery by hand against the Board so I don't close the phone and then see what happened (Worked or not) but it was working so I though success.
I closed the housing of the phone !! Damn phone starts but Black Screen !! Vibrates but black screen !
I kept fiddling and though the flex had gone but no.
I re opened the phones removed the Camera Module.. and Their it starts working again!! I close the phone so I can use it without camera and Boom .. it doesn't work again .. RED Led Blinking !! Phone not recognized by Windows !!
where did I go wrong
PS I had replaced the Flex Cable a few months back and My Phone WAS PERFECTLY working until I opened to Replace The Camera Module !!

saqibkhan said:
@Bakisha
hi.
just wanted to chck with you again.. I got a weird problem again.
My phones back camera was not working. giving errors. my friend had a Xperia Play for parts.
I removed that Camera Module and replaced with mine. It started working fine. Cool. I Tried to switch on the Phone while holding the Battery by hand against the Board so I don't close the phone and then see what happened (Worked or not) but it was working so I though success.
I closed the housing of the phone !! Damn phone starts but Black Screen !! Vibrates but black screen !
I kept fiddling and though the flex had gone but no.
I re opened the phones removed the Camera Module.. and Their it starts working again!! I close the phone so I can use it without camera and Boom .. it doesn't work again .. RED Led Blinking !! Phone not recognized by Windows !!
where did I go wrong
PS I had replaced the Flex Cable a few months back and My Phone WAS PERFECTLY working until I opened to Replace The Camera Module !!
Click to expand...
Click to collapse
Hmmm. i would guess flex cable again, but red blinking could also mean problem with battery (or maybe even flex is even short-curcuit it somewhere)
Do you have some old broken flex that you know that it have working screen? And try with/without camera module
Or try with assembled (closed) part where is screen but keep motherboard part unclosed and try to power up
Just a tip: If you have black screen (and it vibrates ones when powering up) try again to power up but in fastbott or flash mode. If it enter in fastboot mode, but still it give you black screen, then it means that motherboard is working but does not have connections to display
Try to check battery voltage somehow. It must have above 3.2V to be able to charge it.

saqibkhan said:
@Bakisha
hi.
just wanted to chck with you again.. I got a weird problem again.
My phones back camera was not working. giving errors. my friend had a Xperia Play for parts.
I removed that Camera Module and replaced with mine. It started working fine. Cool. I Tried to switch on the Phone while holding the Battery by hand against the Board so I don't close the phone and then see what happened (Worked or not) but it was working so I though success.
I closed the housing of the phone !! Damn phone starts but Black Screen !! Vibrates but black screen !
I kept fiddling and though the flex had gone but no.
I re opened the phones removed the Camera Module.. and Their it starts working again!! I close the phone so I can use it without camera and Boom .. it doesn't work again .. RED Led Blinking !! Phone not recognized by Windows !!
where did I go wrong
PS I had replaced the Flex Cable a few months back and My Phone WAS PERFECTLY working until I opened to Replace The Camera Module !!
Click to expand...
Click to collapse
Pictures please!
Sent from my LT28i using XDA Free mobile app

psxpetey said:
Ribbon cables gone
Sent from my LT28i using XDA Free mobile app
Click to expand...
Click to collapse
psxpetey said:
Pictures please!
Sent from my LT28i using XDA Free mobile app
Click to expand...
Click to collapse
I thought to update you on this.
my friend had a spare xperia play so I thought to make use of it but its flex cable had problem and screen was Fuzzy and Snowy when switched on.
I believe my flex cable doesn't have problem ,, its the Connector where the Flex cable connects to the Motherboard. I am using my own mobiles "LCD and Digiter portion and his Mobiles motherboard portion" and everything works fine.
but when I connect my mobile to his Flex cable and motherboard portion it doesn't work at all.. same Purple Light when the Kernel boots but nothing on the screen. any suggestions how to fix the motherboard connector or maybe a hardbrick !