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Xperia Z Ultra Defective Screen, DOA

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By fhsieh, Senior Member on 4th August 2013, 05:48 PM
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I ordered an Xperia Z Ultra and received it in the mail yesterday. Unfortunately, the unit I received has a defective screen. When you press the power button, the screen backlight turns on but stays completely blank (black). Android is still running fine underneath -- pressing back/home/app softkeys gives haptic/audio feedback, pressing volume rocker gives volume up/down sounds, etc. However the screen stays completely blank and the device is unusable.

No matter how many times you press the power button, the screen still remains blank/black. The screen will only turn on correctly, randomly. On my unit, anywhere between 5 and 150 power button presses.

The screen also has a noticable yellow tinge.



Turning-off the phone first does not solve the problem. In fact, the screen is still blank when booting up (i.e.: the "Sony/Xperia" loading screen/boot animation).
Pressing the hard-off button next to the SIM card tray also does not solve the problem.
Pressing and holding Power+VolUp also does not solve the problem.
Factory-resetting via Settings also does not solve the problem.
Reflashing latest firmware from PC Companion or SUS also does not solve the problem. (Flashes correctly, but screen is still defective)



So just beware, for anyone getting a C6802. Either confirm in-person that you don't have a defective unit, or have your retailor confirm for you.

The unit I received:
- C6802 (3G-only), White
- Hong Kong, unbranded
- Manufature date: 13W29 (2013, Week 29)
- Firmware version: 14.1.B.0.471

Edit:
Other YouTubers similar/worse defect on their Xperia Z Ultra:




Last edited by fhsieh; 6th August 2013 at 07:00 PM.
 
 
4th August 2013, 06:18 PM |#2  
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Both video upload by same person, it is ridiculous having two units and both is defective.

Lucky me and my friend + at least 30 users (report at Malaysia lowyat forum), our units running perfectly fine and no issue with great panel display, not as above video look that terrible and full with problem.
5th August 2013, 12:32 AM |#3  
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Got my C6802 on Friday and love it!
No screen problems at all here.

Sent from my C6802 using xda app-developers app
5th August 2013, 01:56 AM |#4  
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Quote:
Originally Posted by cmclaughlan

Got my C6802 on Friday and love it!
No screen problems at all here.

Sent from my C6802 using xda app-developers app

Seconded.
5th August 2013, 08:22 PM |#5  
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Good to hear you haven't had any problems. Hopefully this is a limited issue that won't affect a lot of units.

Unfortunately the RMA process for me will take some time, and my retailor just ran out of stock, so looks like I'll be waiting for some time before I can get a replacement.
5th August 2013, 10:42 PM |#6  
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Bought from a reputable seller?

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6th August 2013, 07:37 AM |#7  
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Quote:
Originally Posted by Lusterboi

Bought from a reputable seller?

Ordered from Expansys. As I'm in Japan, I ordered from their Japan division (based in Hong Kong), which is unfortunately under-staffed. Sadly, I'll have to pay additional shipping costs for the replacement, as well as paying import tax again for the replacement. Hopefully Expansys will be willing to help cover some of the extra cost, but so far I haven't heard back from them (because they're just under-staffed).
6th August 2013, 08:30 AM |#8  
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I'm facing black last night. third day of purchase. after press hard rest button solved

Sent from my C6802 using xda app-developers app
6th August 2013, 08:38 AM |#9  
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Quote:
Originally Posted by avenloh

I'm facing black last night. third day of purchase. after press hard rest button solved

Did you have the same blank screen problem as in the video?

And can you explain the "hard reset button"?



I have tried soft-off (Power+VolUp, or OFF switch located next to SIM tray), software factory reset (Settings > Backup & Reset), and Sony PC Companion/Update Service (reflash factory firmware), and my device still has the same issue.

Thanks.
6th August 2013, 08:52 AM |#10  
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Quote:
Originally Posted by fhsieh

Did you have the same blank screen problem as in the video?

And can you explain the "hard reset button"?



I have tried soft-off (Power+VolUp, or OFF switch located next to SIM tray), software factory reset (Settings > Backup & Reset), and Sony PC Companion/Update Service (reflash factory firmware), and my device still has the same issue.

Thanks.

mine is just blank. no line as second video. still can recieve call (using bluttoth). but nothing show. plug in chaarger also cannot charge. press the button beside sim card solved
6th August 2013, 01:22 PM |#11  
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I think this is a software issue (there may be multiple root causes/symptoms).

Today my display would not turn on, but the phone appeared to be working OK- audio etc.

I hooked it up to ADB and saw many messages about inability to turn the dislay on.

Did a adb reboot command and all is well.
Didn't know about the reset switch - I think that would have worked also.

So I believe the phone gets into a state where the display will not turn on (and requires a reboot). Adb reboot is not practical. A hard reset may be, but I need to carry a reset tool with me.

Had the Ultra since last Thursday (so 5 days and 1 occurence). Not sure on root cause (I have a Pebble watch and it's battery also drained at the same time and the Ultra was in a state where it was not charging properly).

Will see if it happens again.

Sent from my SGH-I467M using xda app-developers app

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