Develop Bugs

LCD color problem: Weird Teal/Blue-ish

Hey Everyone,
My LCD screen seems to not be displaying colors as well as it should, almost as if it isn't displaying all the colors that it is in fact capable of...
I had some prior problems with my phone, including a non-functional power button, a digitizer with some unresponsive blind spots along the left and right side of the screen, and a very faint/low volume through the in-call speaker.
I had been planning to go inside my phone using the teardown/repair guide, and actually ended up stripping my phone down to the LCD panel.
The good news is I have fixed all the problems that I had set out to fix while doing the teardown.
HOWEVER, my screen is now a weird teal/blue color. For example, when I equip the standard HTC skin (the one with the nice colorful bubble background) Instead of the notification bar/button being a solid steel gray, they seem to have striping pattern with some dull colors of gray but with this teal coloration.
I was wondering if it is more likely something to do with the pcb/lcd getting slightly damaged when I did the teardown, or is it possible it is something to do with a setting on my phone? (the boot screen did load up once, when I was doing the teardown and checking if my phone still worked, I chose reboot as the option)
HELP!

Well more then likely it is the conectors I've seen it to many times when people dicide to take apart phones id say take it all apart and make sure your cabbles are plugged in nice and and firm report back and tell me. Also make sure you havnt nicked anythng on the pcb boards (traces or anything) no nicked cords ect
Sent from my HTC Vision using XDA App

Same thing happening with mine, it's a week old and I've never taken it apart.

Only thing i can think of that happened that makes sense is a damaged pcb flex cable, thats it.but the weird thing is i fixed everything else. Its annoying cause videos look wack and taking photos is also messed. Ill probably go back into my phone and see what i can do, ive opened it like 8 times so wont be too hard.

)
Sent from my HTC Vision using XDA App

me too
Just wonderening if anyone found a solution to this problem as I am experiencing the same thing. I have never taken my phone apart. I have my own post called display color problems. Please help! This is absolutely obnoxious!

I sent mine back to Bell for repair. Took 2 weeks, don't know what they did but it works great now.

Was that an expensive repair? Wish I knew what the problem was so I could try to fix it myself.
Sent from my HTC Vision using XDA App

bglidd414 said:
Was that an expensive repair? Wish I knew what the problem was so I could try to fix it myself.
Click to expand...
Click to collapse
Actually it was covered under warranty so cost me nothing.

Well thanks anyway.
Sent from my HTC Vision using XDA App

Is your phone not under warranty? If it's because you rooted it, you can relock the phone with gfree and restore the BellMobility RUU...

Yeah I guess I could but I really can't go two weeks with no phone. That's the main problem.
Sent from my HTC Vision using XDA App

Figured I'd give this thread a bump. Really just hoping that someone out there has some experience with this problem. I've searched the net high and low to no avail. I don't want to waste money on unnecessary parts if I just need one. Presently, I plan on replacing my LCD. If anyone has any other suggestions, I'd love to hear them...
Sent from my HTC Vision using XDA App

This happened to me before i first opened up my phone. I wouldn't replace the LCD because i cracked mine, and had to replace it and it still does it. Just try and get a replacement phone from your carrier or the store from which you bought it while they fix it. Easiest option.

Broken screen or what?

A relative of mine also owns a G2 but recently they experienced a weird issue. They just picked up the phone just to see that the screen went bad. Wasn't in the process of flashing anything. The phone ran CM7.0.2 for the longest time. It was all black with a white line running across the screen and the capacitive buttons are stilll lit. After a week or so, the white line disappeared and its just a black screen now.
There's no water damage as it went nowhere near water and the water damage indicator is still white. Could the screen be broken? A loose connector? Any help?
Sent from my T-Mobile G2

I don't know much about the g2 but try and enter the bootloaders. If they come up then its programming. Something like that happened to my hd2 cuz a bad flash.
If they don't then its prob the screen.
Sent from my galaxy s2. On xda premium

You think just ordering a new screen from Amazon or eBay and replacing it will do trick? And yeah I just thought about bootloader as I wrote the question.
Sent from my T-Mobile G2

mapheG2 said:
The phone ran CM7.0.2 for the longest time.
Could the screen be broken? A loose connector? Any help?
Click to expand...
Click to collapse
if it ran a long time i would guess a hardware failure (if it doesnt even show up bootloader)
so you need to replace the display.
does the display even initialize when powering up the phone?
when switching the phone on you see its "switching" from black to dark gray (lighter black as it is when powered off)
cause if it doesnt even get power, it could be something on the phone too which doesnt give (enough?) power to the display...

Yeah. but I'd take it apart if u know how just to check
Sent from my SGH-T989 using xda premium

Try to connect with adb just to make sure your phone is still working before you spend money on a screen. Unless it rings when you call it or something.
Sent from my HTC Desire Z using Tapatalk

Back light not working on Xperia play, what do i need to change?

I just traded my mini pro for a Xperia play with no back light working and sd card not reading. Ive dismantled all of the play and put it all back together and still the same problem and i have also used SEUS to reflash the software and still no back-light. You can see the play is on, its just really hard to see and i can receive calls. Im hoping to fix this for my my girl friend as i already have one.
My main concern is the back light and then the sd i think lol also the green light comes on when charging
So do i need a new screen or can i just change a part?
Thanks

Is the screen light built in to the screen? Or could it be the proximity sensor is broke any one please
Also if I open the game pad a little bit the screen works and fully open didn't work.
Sent from my R800i using xda premium

danlivesey said:
Also if I open the game pad a little bit the screen works and fully open didn't work.
Click to expand...
Click to collapse
Possibly a damaged ribbon cable?

That's what I think but the ribbon that connects to the screen and the keyboard is hard to get to, the only side I can get to is the side that connects to the keyboard, there's a video on YouTube but didn't show you how to take your digitizer or get the ribbon out completely.
Sent from my R800i using xda premium

danlivesey said:
That's what I think but the ribbon that connects to the screen and the keyboard is hard to get to, the only side I can get to is the side that connects to the keyboard, there's a video on YouTube but didn't show you how to take your digitizer or get the ribbon out completely.
Sent from my R800i using xda premium
Click to expand...
Click to collapse
The digitizer is not attached to the LCD and comes off with the frame. The cable goes under the LCD module and I've seen it for sale but I'm not sure if it's meant to detach from the other end. If it has a short or something, It's likely where it connects to the bottom half or where it folds anyway. Have you taken it apart and taken a look at the folding cable?

i also have the same problem.
my lcd light are off.
but my touchscreen(lcd) still working, i can make call receive call, open app and other.
but the light too dim. hardly to see anything that i click/touch on the lcd.
plssss help me out.
does i need to change the lcd? or other parts of the phone?
and where is the light on the lcd btw?
i already flash my phone. so i dont think it is software problem.

i have the same problem but have no light at all, screen self is responsive if im touching it but no backlight
please help

Solve myselft, my problem is hardware coz i flash my xperia play and it doesnt work either, so i send to shop to repair and it done, the prob could be ribbon n lcd, mine was ribbon
Sent from my R800i using xda app-developers app

which cable?
which cable do you mean? the flex cable that goes with the slide up and down or something else on the digitizer?
as an idiot i changed the lcd but of course nothing works.. still no backlight...

Faulty screen replacement?

Hi, I am kinda new to this forum and although I tried to find answer first, I didn't find any.
So today I tried to replace LCD screen on my broken Evo 4G (Sprint) and after many tries when I thought that screen doesnt fit I noticed that the metal casing inside isn't native part so I took it out too. Then the new screen fit very correctly. However, when I turned it on, colorful stripes and faulty pixels appeared and I think now, that I may broke the screen somewhere, although I dont see any cracks visually.
Can the experienced ones of you give me an advice if the screen is broken or what may be wrong? I attach the picture of screen when the phone is on.
Thank you in advance

andreasovo said:
Hi, I am kinda new to this forum and although I tried to find answer first, I didn't find any.
So today I tried to replace LCD screen on my broken Evo 4G (Sprint) and after many tries when I thought that screen doesnt fit I noticed that the metal casing inside isn't native part so I took it out too. Then the new screen fit very correctly. However, when I turned it on, colorful stripes and faulty pixels appeared and I think now, that I may broke the screen somewhere, although I dont see any cracks visually.
Can the experienced ones of you give me an advice if the screen is broken or what may be wrong? I attach the picture of screen when the phone is on.
Thank you in advance
Click to expand...
Click to collapse
did you connect it correctly? it looks like you might have damaged the connections, it happens if you didnt lift the little locks up and tried pulling it out
*sorry for the poor vocabulary, i replace screen all the times just not sure what the proper names for the parts are*

I understand what you mean. Does it mean for me that is useless to buy new screen as it would have the same issue or new one sould solve it? I mean if problem is the flex cable or pins on board?
Andreasovo
Sent from my GT-I9100 using xda app-developers app

andreasovo said:
I understand what you mean. Does it mean for me that is useless to buy new screen as it would have the same issue or new one sould solve it? I mean if problem is the flex cable or pins on board?
Andreasovo
Sent from my GT-I9100 using xda app-developers app
Click to expand...
Click to collapse
well if it is the flex cable it, then ordering another screen would solve the problem. but if it is the pins then ordering another one would be pointless. theres also a chance the lcd might be faulty. All the LCDs and digitizers that i buy i get them from Amazon :good: and so far all have worked perfectly.

Sounds like damaged pins on board from not releasing the pin cable latches before removing the cable from the board, in which case the phone is fubar and the only way to repair it is to replace the logic board or the device itself
We are legion, for we are many.
Sent from the DarkSide of the GalaXy with a MEK device

-EViL-KoNCEPTz- said:
Sounds like damaged pins on board from not releasing the pin cable latches before removing the cable from the board, in which case the phone is fubar and the only way to repair it is to replace the logic board or the device itself
We are legion, for we are many.
Sent from the DarkSide of the GalaXy with a MEK device
Click to expand...
Click to collapse
I dont see a way how I can recognize damaged pins as from my view it looks they are OK, but if they are easily damaged from inside, then it might be so. I will possibly try to get new screen cause I might use too much force when putting the last one into it.
Or any other guess?

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.