Develop Bugs

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...

Help with my xperia

well, i' have installed roms for a while and everything is ok, but in last days my phone sometimes stop responding, the screen doesn't turn on pushing the power button, but the funny is that apparently the phone still working, how do I know? if i have patience after a moment maybe 10 mins or in other cases is delayed 1 day the screen shows up in the last part where it was.
Now when I don't have patience and i pull off the battery and try to turn on the phone, the phone apparently turn on, vibrate, and then show the blue light and thats all , the phone still has keep in the black screen and I have to pull off the battery and repeat the process until the phone wants turn on
please help me this problem is really stressful
and a extra information..
2 or 3 months ago my phone fell down in a pool
maybe the problem is the battery? any help is valuable for me

So I can tell you 90% your Xperia Play suffers from a disease called "the flex cable damaged" disease. Your phone will have to undergo a surgery which will replace the damaged flex cable with a new one. Flex cable is the cable which connects the motherboard to the screen. Common issue for Xperia Play. Revert to stock, and I mean completely stock, then send to Sony Centre and replace for free if you still have warranty.

woww that was fast, unfortunately I have no warranty, my cousin throw me at the pool so i think he can pay me the flex cable... do you know how much is it?
by the way........rhank you sooooooo much

Er I am not sure about the price cause I got mine fixed under warranty. But I think it's not really expensive

So a tip for us is that open the slider slowly to avoid damage to the flex cable right?
Sent from my R800i using xda app-developers app

sufy1000 said:
So a tip for us is that open the slider slowly to avoid damage to the flex cable right?
Sent from my R800i using xda app-developers app
Click to expand...
Click to collapse
Yep. Some people always push up hard (I am one of them ) then my flex cable is damaged.

I don't think it has anything to do with how hard you're using the device.
It has to do with how it was installed from the factory.
sometimes the cable can get bunched up underneath the screen and get a crimp in it.
My other spare screen slider cord has been crimped and i don't know how much longer it will last
but my other one is totally fine.

Guys I had problems too with my XP. One day the screen became all glitchy than i changed my flex cable and now the Device goes on when I push the on/off button the device thrills but no screen.
Any solution for this all ready flashed stock .TFT file.

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
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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.

What parts are broken in my Xplay? (Gonna repair)

My old friend has given up on me and is laying on the shelf in coma. I need your help to revive him back to life.
So I've had my xplay for about 2 years now and it worked well into the end. First the touchscreen stopped working (I could get it working sometimes by swyping the gamepad down and up but in the end it completely stopped working). I tried many different roms and etc no luck it was a hardware problem. I used the gamepad to use the phone until the screen stopped working. Sometimes a reboot could make it work again but it eventually got worse and it was dead. I can still feel the vibrations when it starts and also when it wants me to choose if I want go to recovery.
I've taken apart the phone to see if a cable was loose but there was none so I put the phone back together to see if it would be working after i cleaned and checked the flex cables. Sadly nope.
I must say that I'm not a handyman but taking this phone apart was super easy and I never thought I would be able to put it back together but that was also easy.
So here is my question. What parts do I need to replace to get the screen running again?
I appreciate all help I can get and sorry for the WALL OF TEXT. Cheers!
Sent from my Nexus 5 using xda app-developers app

99.99% it's slider flex cable. Replacing it should not be hard, since you now how to open your Play.
Touchscreen, front buttons, light sensor, proximity sensor and front camera are all connected to motherboard with that one flex cable.
Video guide might be helpfull too:
https://www.youtube.com/watch?v=vRjC19j2m48
Sent from my R800i using xda app-developers app

Alright thank you. I'll order one from ebay and see if I can get it up running again.
Sent from my Nexus 5 using Tapatalk

haverdaden said:
Alright thank you. I'll order one from ebay and see if I can get it up running again.
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
If/when you get the flex cable installed and it solves the issue, please report back here if it solved your issue so others who mau have a similar or same issue can get an idea if this fixes it.

Yes, I'll report back as soon as I get the cable and I got it running again.
Sent from my Nexus 5 using Tapatalk

Xperia M Screen (Possibly) Broken

Hi,
I 'dropped' my phone hard on a table and now the screen doesn't show anything. I can hear the phone clicks so that works. I've tried turning it on and off etc. but no luck.
Might it be loose wire or other part?
Thanks

If the screen remains fully black when you attempt to switch it on then its likely to be a loose wire. If there is a backlight then it could be either a loose wire or a damaged LCD screen.
Sent from my C1905 using XDA Premium 4 mobile app

There is a backlight indeed. I wonder how much I can take apart myself to find out. I can't see any obvious dents or cracks etc. on the screen or casing etc. so maybe something is loose?

SharpnShiny said:
There is a backlight indeed. I wonder how much I can take apart myself to find out. I can't see any obvious dents or cracks etc. on the screen or casing etc. so maybe something is loose?
Click to expand...
Click to collapse
Flash stock kernel. . you can see the sony logo right? then after that just black with backlight? its just like PC without windows .meaning its just BIOS without windows .its just the same with Phone ,no kernel no boot .So just flash the stock kernel

Farsiris said:
Flash stock kernel. . you can see the sony logo right? then after that just black with backlight? its just like PC without windows .meaning its just BIOS without windows .its just the same with Phone ,no kernel no boot .So just flash the stock kernel
Click to expand...
Click to collapse
There is nothing wrong with the software. The OP dropped the phone onto a table, that would have caused a hardware problem.
Sent from my C1905 using XDA Premium 4 mobile app

Did he tried it?just a suggestion.maybe it will solve.y not try?right?
Sent from my C1905 using XDA Premium 4 mobile app

Farsiris said:
Did he tried it?just a suggestion.maybe it will solve.y not try?right?
Sent from my C1905 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
There is no point in trying it because it is a hardware issue. The OP can hear the clicks it makes when it unlocks and they try to hear it, meaning that it boots fine and there is a working kernel. Its a hardware issue, possibly caused by the ribbon cable to the screen coming loose.
Sent from my C1905 using XDA Premium 4 mobile app

gamer649 said:
There is no point in trying it because it is a hardware issue. The OP can hear the clicks it makes when it unlocks and they try to hear it, meaning that it boots fine and there is a working kernel. Its a hardware issue, possibly caused by the ribbon cable to the screen coming loose.
Sent from my C1905 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
are you a technician?i think your so perfect .as if you know everything

Farsiris said:
are you a technician?i think your so perfect .as if you know everything
Click to expand...
Click to collapse
No I'm not, I'm attempting for a job as a technician though as I know how to diagnose faults and what faults are hardware and software.
I don't know everything and I'm far from perfect, I'll admit that. But with what I do know, I know it well.
Now I'm gonna leave it here cause there is no point carrying it on.
Sent from my C1905 using XDA Premium 4 mobile app

Thanks for the tips guys.
Nope, I can't see the Sony/Xperia logo.
Yeah I wondered would a cable be loose. Is it easy to take this phone apart? If not I might try claim the warranty. There is no physical damage at all.

SharpnShiny said:
Thanks for the tips guys.
Nope, I can't see the Sony/Xperia logo.
Yeah I wondered would a cable be loose. Is it easy to take this phone apart? If not I might try claim the warranty. There is no physical damage at all.
Click to expand...
Click to collapse
I haven't disassembled the phone myself (I have had no need for it), however I have just watched a YouTube video and it seemed to be easy enough to disassemble and reassemble. If you look it up yourself and judge whether you wish to try yourself or not. If you have warranty from the store you bought your phone at it will more than likely cover accidental drop damage so if you don't wish to risk your phone then that would be your best option in all fairness.

Try the service manuals...

OK I opened it up and I couldn't see what the problem was. Nothing appears damanged, as expected. There are three main ribbon cables, none of them appeared loose. However, when disconnecting the mainboard from the phone case, the middle cable, which lights the LCD screen, has become fully detatched. It seems that unlike the other two cables, it connects via adhesive. I don't have thermal adhesive. When the phone turns on, now there is no backlight in addition to nothing being visible on the screen. PC Companion picks up the phone so all of that seems to be working. But no LCD and now no backlight. Unfortunately, there is evidence of me opening the phone. I doubt the warranty would be accepted now...?
In the reassembly video in document 1277-1354_Rev1 , it shows the three connectors just snapping/connecting....no glue situation.
If there is anything else I can do via home repair, what could I do? I can't be that far off, surely?

even if you don't open it, you can't file a warranty on SONY Service Centre if the damage is LCD, just buy a new LCD and replace it

Would that be the case even if I bought it locked on a network? How would they know it's the LCD if I don't say? Once before, with another smartphone, instead of listing everything I understood to the manufacturer, I told them almost nothing and got a full replacement.