[Q] Help! Phone boots and is recognized by computer but no image - Sony Xperia M

Hello there
Im hoping that someone here can help me since im ready to seel the pho for spare parts... i've tried it all.
Heres the deal:
- The phone boots well and if i connect it through usb to the computer i can even access the folders and all.
- I can take photos (i her the sound of the shutter and all and see the piics taken in the folder when connected to the computer) and screnshots
- I managed to restore the phone back to original settings and even update software with sony official soft.
- Inicialy i bought the phone as faulty to try and fix it since the buyer informed me there was no water damage ( and i can confirm this because the "stickers" only show white). He informed that the phone just stoped showing image on screen.
- I thought it was a problem with the LCd so i bought a new one and replace it. The problem persists. Everything works but the screen.
Any toughts on this one? Could the motherboard be faulty in only one place (image, proximity sensor, etc)?
Thanks for you time
Regards

Try the service manuals...

edinacio said:
Hello there
Click to expand...
Click to collapse
I have fully same faulty 2nd "spare parts" phone.
All works except screen, all as you described.
I checked, in my case problem definitely in screen because if connect main board to really working LCD panel = screen ok.
And vice versa: if connect normal main board to this probably faulty screen = black screen.
Maybe here broken flexible connector.
Also nothing interesting related to this case in service documents.

Related

Phone always has a white screen, but seems to work

Hi Forum,
I got a dash with the WM 6.1 from this great forum.
Somehow since yesterday the screen turned completely white
There was no physical impact on the phone what so ever...
When I turn the phone on, the screen is all the time white... but the phone is still working since the alarm is still ringing....
I've tried already the following:
- took the battery out for over 6 hours and tried again
- with and without sim/sd card
- to reset the phone but with no success since I cant see anything (2 softbuttons, powerbutton etc.)
- putting WM 6.5 with no success with the Error 270
- pressing and holding any button
- tipping the jagger for 3 times
- and finally hitting the phone
All these steps didnt use me anything...
I'd be gratefull for any sudgestions
Maybe the screen is just damaged and its not because of the software...
thanks a lot,
RedDot69
Hard-reset will be best option and can be done blind since it's button sequence as known then green key, i knopw that peeps have done it blind and with you spending enough time it will be sorted... The other option is bootloader and flash your stock ROM as won't get an error 270
thanks for the fast reply.
ok about the hard reset.
I hold both buttons beside green and red button then while holding i turn on the phone (power button more then 3 sec.) after it turned on i let go of the buttons and press the green button (I pressed it a several times). What after that?? will everything happen automatically??
if yes then the hard reset wont help since its still white...
unfortunately I dont have the original ROM anymore (WM5).
Do you know where I can get it??
Ok I guess I managed to hard reset this thing.
Unfortunately with no success
can anyone help?
will the problem be gone if I change the display?
RedDot69 said:
Ok I guess I managed to hard reset this thing.
Unfortunately with no success
can anyone help?
will the problem be gone if I change the display?
Click to expand...
Click to collapse
Can you sync with your PC? That's something that you haven't state in your original post.
From what you have posted in the first post, looks to me like your phone has suffered water/moisture damage. Classic white screen, nothing shows, display turns off after default timeout seconds, phone functions smoothly. For this to occur, you dont have to dunk the phone in water, phone in pocket when exposed to light rain, snow will do it.
If this is the case, the first thing you can do to salvage the phone is to remove the battery, otherwise the charge will short circuit more, leading to irreparable damage.
Second thing, try and keep it open for 24 hours or more and try ONCE more, just once, if the moisture has been evaporated. If not, remove battery again.
Next you will need to find a service center where they will dismantle the phone and physically air dry the PCB, and hopefully if it hasnt already shorted, it will come back to life.
The cost for this could vary from minimal to astronomical, depending upon which country you are in.
Do not take my words for granted, do a google for phone water damage, find out if those are your exact symptoms.
All the best.
gmaniac2008 said:
Can you sync with your PC? That's something that you haven't state in your original post.
Click to expand...
Click to collapse
yes I can. I already saved the contact list The phone is perfectly working beside the white display...
@ ccpraveen
I really dont think thats the case. Since I was sleeping on the couch, the phone's alarm went of like at 11 and it was all ok, then 30 min later the screen was all white
And the night before I left the phone at home...
Bringing the phone to some service center is out of question, since I live in Germany... If possible, I'd have to repair it my self...
By the way the Display time out works too... Somehow I got the feeling that it wouldnt use me anything to change the display
please, can no one help
RedDot69 said:
please, can no one help
Click to expand...
Click to collapse
install this on your computer http://www.mymobiler.com/
it will silently install on your s620 when it syncs with activesync and you will be able to view your screen from your computer monitor
if everything works buy a new lcd from ebay and replace it because its probably broken
--- sorry didnt want to post ---
Please skip this reply and read the next (cant delete this anymore)
ducamie said:
install this on your computer http://www.mymobiler.com/
it will silently install on your s620 when it syncs with activesync and you will be able to view your screen from your computer monitor
if everything works buy a new lcd from ebay and replace it because its probably broken
Click to expand...
Click to collapse
thanks a lot for the very usefull link
I installed the programm and I can see my display on my monitor
Then I hard reseted the phone
Installed WM6.5 from the forum successfully
But the display is still all white
If anybody thinks that the problems any way not from the display please do tell.
RedDot69 said:
thanks a lot for the very usefull link
I installed the programm and I can see my display on my monitor
Then I hard reseted the phone
Installed WM6.5 from the forum successfully
But the display is still all white
If anybody thinks that the problems any way not from the display please do tell.
Click to expand...
Click to collapse
My impression is that you have a hardware problem, maybe your screen has something loose. If you state that you will fix it by yourself, you can read the sticky on how to take apart your dash.
There are also power management settings that will turn the display white, however if it is white all the time, then it's probably hardware. Loose connections does sound possible. I'd check that first
You can try the following:
*- COMPLETELY disassemble your phone.
*- Take the PCBs apart on a table or something.
Then... take an hairdryer!!!
You have to dry your PCBs: take a PCB in your hand and do the work.
Be aware of not using TOO HOT air, or you'll melt all.
If it doesn't work, try to dry your LCD.
Doesn't work?
Okay, then the only 2 possible fixes are:
*- Replace the LCD Flex Cable if not integrated in the LCD.
*- Replace the LCD.
Hope that you'll get your phone fixed and running

[Q] Digitizer works fine, phone flashes display then goes blank.

Hello,
My sprint S3 recently quit showing it's display. If I push the power button to wake up the screen, the display will flash for a moment then go blank.
I swapped out the mid case/ digitizer from a working phone, and the problem still exists. The problem is somewhere on the motherboard card.
Any ideas on a fix? Re-bake the board?
I just want to get my information transferred to a new phone, but I also have the dreaded USB port problem.
Thanks.
wainfiggitty said:
Hello,
My sprint S3 recently quit showing it's display. If I push the power button to wake up the screen, the display will flash for a moment then go blank.
I swapped out the mid case/ digitizer from a working phone, and the problem still exists. The problem is somewhere on the motherboard card.
Any ideas on a fix? Re-bake the board?
I just want to get my information transferred to a new phone, but I also have the dreaded USB port problem.
Thanks.
Click to expand...
Click to collapse
from what i have seen in the forums, if it's the motherboard it's better to get a new phone....
Well, I did get another phone. I'm trying to figure out how to get the files that are on my old phone. Kinda hard when there is no display and the USB doesn't work.
Any Ideas?
Thanks

[Q] Stuck in boot load after screen replacement

So, my screen cracked by itself but I didnt get it fixed on the warranty.
Anyway, I bought a new screen from ebay, seemed allright.
Got it yesterday. Took off the old cracked screen, maybe a bit hard cause now its super broken.
When I put the new one in the phone doesnt boot. Just shows the Sony logo then reboots in infinity.
I did PC Companion repair which didnt say anything special just that it got the work done. Still the same problem.
Did the Sony Emma program which should flash the phone the offical way, right? No problem according to the program but when I try to start the phone the same problem.
Tried flashtool and flashed the phone with official..hmm ftf file. Still the same problem.
If I connect the old, very broken, screen the screen lights up all the time on the back side of the screen (the screen doesnt show anything on front side since its really broken) but dont know really if it kind of works.
So, did I screw up the phone when I took the screen off and broke something or could a faulty screen (the new one) actually be what causes the boot loop? That seems weird to me but i gotta ask. If the phone was really dead Emma or flashtool would say so right?
Any thoughts?
Thanks
Some new information. With the old broken screen I can connect the phone to the computer and the phone pops up in explorer. Which it doesnt with the new screen. Bloody what,
bunke84 said:
Some new information. With the old broken screen I can connect the phone to the computer and the phone pops up in explorer. Which it doesnt with the new screen. Bloody what,
Click to expand...
Click to collapse
Is the "new" display unit original from Sony or a chinese replicat?
If not original, i think it is a hardware problem (chinese crap...)
moonryder said:
Is the "new" display unit original from Sony or a chinese replicat?
If not original, i think it is a hardware problem (chinese crap...)
Click to expand...
Click to collapse
Yes, its a chinese copy. So that is probably my problem.
But since it will take months to get a new one any other ideas would be very nice.
Its just weird to me how the screen causes reboots, but I guess thats it.
Hi, did you manage to get it working with an original screen?
I have the identical problem.
Same problem
I have the same problem has anyone resolved the issue
Thanks in advance

Xperia z1 compact Touchscreen falsely registers input

Hi,
Had my phone a couple of years, no problems, but recently cracked the screen.
Bought three replacement screens and fitted them in phone:
* 1st one touchscreen digitiser worked perfectly all the time but LCD was broken (had lines/artifacts on it) - sent it back.
* 2nd one, same supplier as first, LCD worked, but digitiser works intermittently - it always works immediately after phone reboot, but after the screen locks for the first time, it then has a problem where it registers an input when I'm not giving any, so the screen goes haywire and I can't even enter my pin or restart phone (Have to use red button in sim card bay). Occasionally and randomly when I try it, it sometimes works so I can enter my pin, and then use the phone until the next time the screen locks....but basically phone is rendered unusable, because this is totally random. Sent this one back too.
* 3rd one bought from a different supplier - AFAIK this one is a genuine Sony part (it at least has the Sony logo on it), but have the same digitiser problem as the second. Time has passed to send this back.
Due to the above description I am sure it is not a problem with the phone (1st one digitser worked perfectly & original cracked screen digitser worked for half the screen where it wasn't cracked). I'm also sure it's a software issue, since it works everytime following a phone reset but before the screen is locked. Behaviour seems to be the same at different temperatures. Also inspected the flex connector and ribbon components under microscope at work, and saw no problems.
One think I noticed is that all 3 screens I bought have no insualting backing on the back of the LCD, so the metal back touches the metal shield below - I did not see any screens to buy with the insulating backing - I wondered if this could be affecting the EMC behaviour of the screen (some capacitivie coupling with the digitiser or some type of grounding issue) - but then why would the digitiser of 1st screen work ok, and work for >1hour following a reset but then not after a screen lock?
Tried turning glove mode on/off - no difference in behaviour. Tried using screen while it is not fitted in phone housing (not touching metal shield), same behaviour.
I saw a couple of threads from a while back, but don't know if they are up to date, or if a solution to this problem is now known:
https://forum.xda-developers.com/showthread.php?t=2691849
This one gives a solution, but then says at the top of the thread DON'T TRY THIS FIX, IT IS A HARDWARE ISSUE NOT SOFTWARE.....so I'm worried to try it.
https://forum.xda-developers.com/showthread.php?t=2662457
This one is to adjust the touchscreen sensitivity, but even though I have root access, I get an error message relating to the mount commandwhen trying to copy the edited idc file back to the system\usr\idc directory, "operation not permitted'.
Does anyone know a reliable fix that works? Or how I can get write access to idc folder to try editing the clearpad file? I don't have an SD card for my phone, but not sure it is essential for these methods?
Thanks
Nabla_x said:
Hi,
Does anyone know a reliable fix that works? Or how I can get write access to idc folder to try editing the clearpad file? I don't have an SD card for my phone, but not sure it is essential for these methods?
Thanks
Click to expand...
Click to collapse
Assuming you're on LP 5.1... System rw access is disabled by default, even with root. Flashing dual recovery by NUT is easiest way to get it. Then you should be able to move files in boot or in recovery.

PX5 stuck showing warning image, buttons unresponsive.

I just bought a PX5 unit, which seemed to be working perfectly until I finished installing it into my car and now it has become unresponsive with a black screen and a yellow rhombus with an exclamation point in the middle (unable to upload image as new user).
If I turn off the ignition, it will turn the stereo off and the android screen briefly shows before going into sleep. None of the buttons are allowing me to get past the screen and in to android. The reset button seems to do nothing, android is definitely running in the background, just unsure as to why this screen will not close. Any ideas?
Hi, I think I saw a yellow rhombus with an exclamation point when I was installing my radio and rear view camera was not connected to the radio. I think that it is a warning about missing video signal when radio is displaying live feed from a rear view camera.
So, one explanation for your issue could be that the radio thinks you are reversing, and the rear view camera is not connected to the radio. If I understand it right, radio can switch to rear view camera display mode based on two conditions 1) canbus information 2) +12v trigger signal.
For the condition 2), you could check that nothing is unintentional connected to reverse detect wire. If that does not help, then you could perhaps try to disable reverse view feature in the configuration menu before installing the radio to the car and/or find a working canbus configuration settings.
Please notice that I'm a beginner with Android head units and your problem might well be something totally different!!
Thanks for your reply. Some of your post seems to relate to my issue definitely, I think it is linked to the rear view camera which is currently disconnected. However I am unable to get into any configuration options. None of the buttons/resets I try get me past the exclamation screen, I can only see android once I turn off my ignition when it tells me it is closing down. None of the various reset button combinations seem to do anything with my head unit either, can't seem to reset it properly. Its strange, I will reattach the camera tomorrow and see if that brings any joy. I don't know anything about this stuff myself but I am wondering if I did something to the head unit to brick the non-android side somehow.
Edit: Unfortunately reattaching the camera did not change anything.
Update. I have managed to find a way in to the Android side if I connect my phone via bluetooth to the stereo, it then lets me use the split screen function via the top bar menu to put the warning screen other screen to the side, however whenever I touch the screen or attempt to use the android interface, my stereo goes back to the warning screen, none of my inputs via the stereo buttons or the touch screen seem to be registering with the Android side? Very confused. I have also tried as many button combination resets I can find and I have not been able to successfully get into the recovery menu, or any change except rebooting.
Was your unit professionally installed?
Also, what did the re-seller suggest when you contacted them for support?
No the unit was not professionally installed. I am not sure how I've become stuck with the problem. I made some minor changes in factory settings but nothing I thought would of caused this. The seller is yet to respond and its been a couple of days, but I have requested the hardware reset methods for this unit or any other solutions.
deano35 said:
No the unit was not professionally installed. I am not sure how I've become stuck with the problem. I made some minor changes in factory settings but nothing I thought would of caused this. The seller is yet to respond and its been a couple of days, but I have requested the hardware reset methods for this unit or any other solutions.
Click to expand...
Click to collapse
Check the reverse wire on the back of the unit...if necessary disconnect it to ensure no reverse signal is received.
If your unit can boot into android normally then you will have to figure out why the reverse wire is receiving signal .
Check your connectors to avoid any of them to be loose.
Enviado desde mi SM-G950F mediante Tapatalk
Everything has been disconnected from the unit except the power cable to car and and canbus, from what I can tell nothing is loose. Unit will not boot without the canbus box whatsoever, not sure if that is meant to happen.
deano35 said:
Everything has been disconnected from the unit except the power cable to car and and canbus, from what I can tell nothing is loose. Unit will not boot without the canbus box whatsoever, not sure if that is meant to happen.
Click to expand...
Click to collapse
Yes, canbus decoder need to be connected for power up the HU. If you dont need the decoder box you need rewire the harness.
I think I am going to have to request a refund and return it. Still no reply from the reseller and I am not sure what else I can try, everything that is not needed to power it has now been removed. I can't send links or else I would update the thread with a video of the touch/physical buttons being completely unresponsive even when I manage to get to Android. The unit has definitely developed a fault and I am unable to reset it. Admittedly it could be my fault somehow as it was working for the first few boots, but unless they give me something to try I am just going to have to send it back.
Quick bump. Has anyone got any further ideas? I bought off Aliexpress so contact with the seller is slow and painful, they do not seem to understand the issue and just keep telling me to disconnect all wires and reconnect. Which has been done many times. If anyone wants to post a link to the video for me I would be happy to send them it privately.
deano35 said:
Quick bump. Has anyone got any further ideas? I bought off Aliexpress so contact with the seller is slow and painful, they do not seem to understand the issue and just keep telling me to disconnect all wires and reconnect. Which has been done many times. If anyone wants to post a link to the video for me I would be happy to send them it privately.
Click to expand...
Click to collapse
I would start a dispute with them. I had a device that they sent with similar problems and plenty of issues, which they would not help with or would not understand. Best option is to dispute to get a new device or a full refund. Could you send the video?
xLeviNx said:
I would start a dispute with them. I had a device that they sent with similar problems and plenty of issues, which they would not help with or would not understand. Best option is to dispute to get a new device or a full refund. Could you send the video?
Click to expand...
Click to collapse
Yeh I have a dispute open currently, just was hoping it would inspire the seller to actually offer up a working way of resetting the device. Had to add link below seperately as needed to be ten or most posts.
https://www.youtube.com/watch?v=ujHacKESAT8&feature=youtu.be
The stereo defaults as the warning image black screen and I can only get android up using the multiwindow button with a long press. Then the android side will not register any input and will keep trying to put the black screen to the front.
Update: I have been told by Aliexpress I can have a partial refund and keep the unit, or a full refund if I return to China. Anyone have any ideas how I would go about resetting the unit if I took the partial refund? To be honest I think my only option is to return it and get the full amount back but any ideas would be welcome! Shipping to China and awaiting a refund is going to take weeks, would rather just get it working if possible.
deano35: any progres? I have the same problem as you. This is my post from PX5 MTCD/E Head Unit Discussion Thread
" Hi , I have https://s.click.aliexpress.com/e/DtwdJIt its px5, Mtce_gs_v2.90c. Now I have a little problem with rear camera. I bought reverse camera and tried to connect it into front camera input(I was curious how it would look like) and since then its stuck on camera view. Even after disconnecting camera. Only solution was disable "prohibit reverse" in factory settings menu, but with "prohibit reverse" disabled is obviously not showing reverse camera when I gear the reverse down. Everything is shown in this video. https://photos.app.goo.gl/XbYUHApzT8qTezkq6 Thanks for any advice. "
Take a look on the video, its similar as yours.

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