| Author |
K850i screen switching off and buttons lighting up when sending a text |
Akhtar
Joined: Oct 04, 2009
Posts: 4
PM |
Hello,
My K850i works fine, except for when I send a text, half way through sending a text the screen goes black, the buttons light up and it becomes unresponsive. If I wait til it goes into standby (button light turns off) it comes back to life and is normal. It constantly does this and I keep having to wait til standby, it also does this elsewhere when I'm just using the phone.
I tried using sony ericsson update, it said I had the latest update so I reinstalled the software, the problem still didn't go! I also tried flashing it back to the software I was using, via A2 uploader, and this still didn't work (nor did a master reset).
The phone is out of warranty so repairing it will probably be expencive. Does anyone know how to fix this problem?
Thanks for any possible help or suggestions!
EDIT: I just started playing around with the phone, it seems that the phone still works fine when the screen goes black, if I continue typing it is still registered. So I assume its an LCD related problem. But its strange that it generally only happens when I start texting?
[ This Message was edited by: Akhtar on 2009-10-04 17:22 ] |
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mallaccra
Joined: Oct 01, 2007
Posts: > 500
PM |
check the ribbon connector that connects the motherboard with the lcd, probably the ribbon socket on either side has loosen and when texting it will pulled the ribbon off the connector and the black screen occurs...
i've not experience such problem and please get other opinions too...  
[ This Message was edited by: mallaccra on 2009-10-04 19:03 ] mallaccra®  Xperia Z2 |D6503|4.4.2| Xperia Z1 |C6903|4.4.2| Xperia Z |C6603|4.2.2| Xperia ZL |C6502|4.2.2| Xperia TX |LT29i|4.1.2| Xperia Ion |LT28h|4.0.4| Xperia P |LT22i|4.1.2| Xperia J |ST26i|4.1.2| Aino |
hihihans
Joined: Mar 15, 2009
Posts: > 500
From: Netherlands
PM |
Its your lucky day  Here you can find a step by step how to open up your phone and even how to replace your screen.
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Akhtar
Joined: Oct 04, 2009
Posts: 4
PM |
Hello, are you sure its the screen, I don't want to replace it to find out its not actually the screen but something else!
Thanks |
hihihans
Joined: Mar 15, 2009
Posts: > 500
From: Netherlands
PM |
No I'm not sure but it might be good to open it up and make sure every connector is clean and sits in its place.
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Akhtar
Joined: Oct 04, 2009
Posts: 4
PM |
Thanks, I'll try this, I ordered the screwdriver set, should hopefully come tomorrow, will keep you updated!
Btw, LCD doesn't work at all now, either the connector has completely come off, or the LCD is dead and I'll buy a new one! |
hihihans
Joined: Mar 15, 2009
Posts: > 500
From: Netherlands
PM |
Good luck mate. Let us know how it goes.
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coxon
Joined: Jun 03, 2006
Posts: 53
From: Sydney, Australia
PM |
just keenly following this thread...
my k850i has just started doing this... at first the screen went off every so often... however in the past 2 days... just the slightest touch on the left hand size of the keypad (without actually touching a button) the screen will shut off... and keypad lights up...
thinking about ordering a replacement lcd screen.. or replacement keypad... not sure which it would be...
cheers
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rajafazi
Joined: May 06, 2009
Posts: 2
PM |
facing same prob. |
stoney4th
Joined: Nov 23, 2009
Posts: 2
PM |
ive started to have same problems as Coxon and A, lcd turns off when:
press the down button
press the number 4
or press gently between number 4 + 5
strange that it has only started to happen since ive given my one month cancellation notice.
master reset doesnt work, im going to try other methods to fix it.....(eg hitting, smashing etc) |
stoney4th
Joined: Nov 23, 2009
Posts: 2
PM |
hi, sorry....
but ive tried squashing the keypad with my fingers, i pressed quite hard, and now its even worse...more buttons are now affected than before. so brute force is not the answer...STUPID PHONES!!! the old ones are so much more reliable!! i am no longer intersted in new mobiles anymore! (unless someone knows the answer to my problem) |
asmyl
Joined: Apr 02, 2008
Posts: 53
PM |
(Try this method before changing your lcd screen or other else)
I have experience about this matter last time, this happened because the back light suddenly off when there is short circuit between the flex cable and the metal part just below the flex cable. You can try this and is ok after that.
good luck
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bluechip
Joined: Jun 09, 2009
Posts: 477
PM |
Hi Akhtar,
sorry to inform you  , i firmly believe that your LCD has been damaged...
Mine also got this problem, fixed it with a new LCD and now its fine...
Just check this thread...
http://www.esato.com/board/viewtopic.php?topic=191005
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ceaser2008
Joined: Jul 14, 2008
Posts: > 500
From: Surat, India
PM |
On 2009-10-04 21:54:48, hihihans wrote:
Its your lucky day Here you can find a step by step how to open up your phone and even how to replace your screen.
Little late on reply but thank you for sharing this site. 
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Posted: 2009-10-04 18:09
Xperia Z2 |D6503|4.4.2| 
