help! screen replaced and phone doesn't start (stuck on Sony logo) - Xperia Z1 Compact Q&A, Help & Troubleshooting

Hi everyone.
I have a big problem, and i hope somebody can help me. 1 weeks ago i breaked the LCD and the touch screen digitizer of my Z1C, so i removed it and I ordered a new one on ebay. Today I received the screen, I mounted it but when i started the phone it stuck on the Sony logo ( I'm sure that the phone before install this screen has no problem, because with the old one i I could see my launcher home page even if it was broken.
I thought was a software problem so i tried to flash with flashtool an old stock firmware but nothing.
Someone know what's the problem?
thanks and sorry for my bad english
Daniele

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Hi!
Probably You have a bad flex cable and it's required to be changed. Sometimes it happens so of to much qwerty keyboard opening and closing.
hi,
I resolved same problem than yours with this tuto
http://forum.xda-developers.com/showthread.php?t=321163
good luck

[Q] Wildfire S screen sometimes refuses to turn on (Standard ROM)

Hi guys I wonder if you can help me. My friend broke his Wildfire S screen and asked me if I could fix it. I got a new glass / digitiser from eBay and replaced the screen. All look fine to me so I took it back to him.
It seems since replacing the screen the phone sometimes refuses to wake up when clicking the lock button, or when an inbound call arrives. The phone rings but there is no sign of life other than the ringing noise. If you then plug in the charger the screen will turn on and you can use the phone as normal. I've tried a factory reset on it but nothing seems to help.
I haven't replaced the LCD just the glass/digitiser, and can't think of a reason in doing so would break other functions of the phone. Can anyone help or suggest what might be the problem here? I'm a competent repairer and have replaced the screens on many Laptops, iPhone's and iPad's but this is my first encounter with a HTC.
I believe it is a stock ROM branded O2 - Details from the phone are ...
Android Version - 2.3.5
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Kind Regards
Plasma
i have a similar problem,
I have replaced the digitizer but the phone doesnt start. I press the lock buttom and the phone vibrates, but the screen is black, nothing apears...
What can i do?
I would like to know...
I've no idea been trying for ages, I'd like to try a newer ROM but can't get the phone in to S-OFF.
I've done the whole HTC Dev thing and unlocked the boot loader etc, but can't find a stock rom / RUU that will flash to it.
And here's me thinking this site was going to be helpful and full of people who knew what they were talking about!
Plasma
esedust said:
i have a similar problem,
I have replaced the digitizer but the phone doesnt start. I press the lock buttom and the phone vibrates, but the screen is black, nothing apears...
What can i do?
Click to expand...
Click to collapse
I resolved this changing the screen lcd panel

touch screen problem

Hi I bought a sony xperia z1 compact about 3 weeks ago, installed apps (whatsapp, facebook, etc... nothing out of the ordinary) and the next day the touchscreen right after i pressed the on button started flickering as if i was touching it and didnt respond to my touch, the problems was easily solver by turning off the screen and turning it on again (not the phone, just the screen) but it repeated several times and just at the beginning with the screensaver. I tried erasing apps but nothing. I changed the phone and got a new one today, this time i only installed whatsapp and outlook and the exact problem appeared!! I uninstalled outlook the problem persisted. I have no idea what to do, i did a system restore and im waiting to see it if fails again.
Any ideas o what it may be or any suggestions???? i dont know i i should ask for a new one (i{m afraid the same thing will happen again) or take it to sony.
Please help!!!!!
Here is a video o the problem:
drive.google.com/file/d/0B6KCEamysGoGM0VCOFdtOU1kTDQ/edit?usp=sharing
Thanks in advance.
The similar problem I have faced in my canvas 3d. It means ur touch screen started to nalfunction and the problem will increase over time.. use ur warranty to get it replaced..
but
coolkoushik07 said:
The similar problem I have faced in my canvas 3d. It means ur touch screen started to nalfunction and the problem will increase over time.. use ur warranty to get it replaced..
Click to expand...
Click to collapse
but this i the second sony xperia z1 compact I'll be replacing.... with just a day of use.... so both of them are faulty? or is it too much of a coincidence????
I'm desperate!!!!!
astridws said:
but this i the second sony xperia z1 compact I'll be replacing.... with just a day of use.... so both of them are faulty? or is it too much of a coincidence????
I'm desperate!!!!!
Click to expand...
Click to collapse
I dont have this prob in my z1c so it is not normal.. may be u r getting a faulty phone from a defective batch.. before buying z1c, I bought galaxy s4 and i replaced the phone 4times and every time i got display issue.. so get ur phone replaced again and again untill the problem solves..

[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

Samsung Galaxy Grand I9082 Safe Mode problem after changing the touch screen.

Guys i just got problem with my Mobile i have changed the touch screen few times from repairing shop but every time it comes with a new proble. i just bought a new touch screen from the hardware shop and replaced it by myself. now touch is working fine but there is another problem it just starts in safe mod. i have restarted it many times but the problem remains the same. i checked it with the old touch panel and mobile starts in normal mod with that. can you guys help me out with this? I will be thankful to you guys. Sorry for my English.
I think you have bought an incompatible screen. try connecting older ones or buy a new one
While rebooting the phone keep tapping the left most button (what ever that is called). There is a Youtube video too.
I too faced a similar issue after replacing the screen and happens when you fiddle with the buttons when the phone is booting up.

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