Develop Bugs

.:: HELP Appreciated ::. Universal - WHITE SCREEN Problem...

.:: HELP Appreciated ::.
Hello Tech GURUS,
I returned from a long tour (I kept my XDA EXEC at home) & found that my XDA EXEC has got a problem of WHITE SCREEN!! Nothing is Displayed!!
May be brother's childrens or anyone of my friend accidentally did it in my absence(Sorry I'm NOT Sure). May be they pivoted (Turned) the screen in a WRONG DIRECTION!
That doesn't matter WHO DID IT, But the problem screwed my head & I started to trace the problem.
Symptoms:
1) Only WHITE SCREEN(with LCD Backlight), Nothing Else.
2) Charges perfectly through USB & also from Charger.
3) When I connects it to ACTIVE SYNC, it Syncs fine & I can able to explore the files/folders. Copy from & to the handset memory is also works fine.
4) Tried to enter into BOOTLOADER Mode(by pressing Light+Power+Reset), there also got a BLANK SCREEN (NO LCD Backlight).
5) TOUCH SCREEN detects TAPs & make sounds (Tick Tick), That indicates Touch Screen Working fine.
6) Qwerty KeyBoard Works fine. I don't know at what extent, since I can't see nothing on screen. But when I press a key on QWERTY Kbrd, it sounds Tick.
7) Transfered(Beamed) a CONTACT from my another XDA IIi & found Its accepted the beamed data.
8) Volume Up/Down make sounds (Tick, Tick...).
What I Did:
1) Removed the Battery & re-inserted & tried to BOOT it. NO result, just a WHITE SCREEN.
2) Purposely Tried to Rotate the Screen in Wrong Direction to test the loose contacts of co-axial cable.
3) Lastly Dis-Assembled the whole handset (Removed all parts 100%) & Re-Assembled it. But the Problem remains SAME.
4) Dis-Assembled again & this time I tested the LCD Co-Axial Cable's connectivity from MainBoard side connector to LCD Side Connector. There are 2 Cables which connects to LCD. One is 30 Cores Cable & Second one is 40 Cores Cable.
I Successfully tested 30 Cores Cable(Actually it used only 28cores cable, remaining 2 points at connector are DUMMY) & Second 40 Cores Cable I'm UNABLE to Test Since I lost my patience while connecting my Testing Meter to Hair Line sized cores & in just an 10mm connector got 40 cores!!!
5) Observed all cores which passes through SCREEN ROTATOR BASE Hinges & found there is NO physical Damage or CORE CUT.
CAN ANYONE HELP ME TO SOLVE THIS WHITE SCREEN PROBLEM?
IS IT A HARDWARE BASED PROBLEM? OR SOFTWARE BASED?
IS IT A PROBLEM WITH DISPLAY CHIP(IC) ON MAINBOARD?
JUST CONFUSED & SEEKING HELP FROM TECH GURUS.
THANKS IN ADVANCE.
HellCrusher.

Hi hellcrusher,
CAN ANYONE HELP ME TO SOLVE THIS WHITE SCREEN PROBLEM?
IS IT A HARDWARE BASED PROBLEM? OR SOFTWARE BASED?
IS IT A PROBLEM WITH DISPLAY CHIP(IC) ON MAINBOARD?
Click to expand...
Click to collapse
This seems to be a hardware problem. Check connectors in the display housing first. This unit is quite easy to disassemble.
Before you start, you should have a look in the universal SERVICE MANUAL to check out how it gets torn apart .
If all connectors to the display are right in place, but your display still shows nothing ...open the universal body too.
Folow the steps in the manual
Regards,
scholbert

White Screen
Hello, this is my first post. May I first just say how great I think this site is, the guides on here really are useful to beginners.
With regard to the white screen, not sure if this helps, but during dismantling of my various PDAs, I managed to connect an LCD ribbon incorrectly, I kind of forced it in & folded one contact over, resulting in white screen. Disconnected, straightened & refit. Hey presto, works like a charm. Hope this helps.

I had the issue, had to buy a new flat cable
It is rare to actually see the damage to the cable, because the damage is inside the insulation....
Best regards!

On the topic...
Hello!
I have a similar issue with my Orange SPVm5000, except that mine will work for up to a minute after a hard reset before going to a white screen.
If I hard reset pressing the left+right+reset keys, the device shows the boot screen and sometimes ever goies into the initial setup but then all of a sudden it goes white. I've opened up the screen and verified and reconected all connections but still the problem persists. Also I've noticed that its not any action I make that causes it; more like a heat/timing issue. Per advice above, I will check the connections in the body but does anyone have any other ideas?!?
Thanks!
Greg.

I have a similar problem. The story;
I purchased an orange branded M5000 on flebay described as second hand in fantastic condition blaa blaa.
When the phone eventualy turned up it had no manual, the outer sleeve of the box was missing and the wrong usb cable was supplyed (one of those larger usb plugs you usualy get for printers.
I have shedlooads of cables and rely wasn't bothered about any of these problems at the time and went about charging the phone (it was totaly flat)
When fully charged I stuck my sim in and poweded her up the phone works fine in portrate and landscape view but as you rotate the screen so it is inline with the keyboard the screen fades to white about half way.
I contacted the seller who basicly told me the phone is second hand so sold as seen!?!?!?
I have flashed various roms on it to see if it was a software fault but nothing.
I think this phone had been in storage as its battery was totaly flat and incorrect accessories suggest the seller didn't check it before shipping. So I believe there is a problem with this phone that occurs when stored.
Sorry for the long post

Have you flashed any rom or just had this problem ...
my conclusions:
1. If you have flashed a new rom to your universal, try to reflash the original rom, it works for many users.
2. If you havent flashed any rom, maybe its a hardware problem.
2.1 If you just used it in a bad way, (ie: rotate screen in wrong way), dissamble it..
2.2 If you have let it on a heat, weat, etc.. place.. maybe the mainboard got a cut-circuit.
Saludos

I tryed a couple of popular WM6 roms (I forget whitch ones) and returned to the genuine Orange WM5 rom. So I doubt its a software fault.
As far was extreme conditions go the phone was well packaged when posted I will gove that to the seller SO unless the eposure happened before shipping I don't think thats to blame ether.
I think the wire in the swivle joint is failing and will continue to get worse as the joint is exercised.

Try to clear it up..
Hi there,
i made a lot experiments with the uni, so let me try to focus what's wrong:
First LVTato's Orange SPVm5000
...
If I hard reset pressing the left+right+reset keys, the device shows the boot screen and sometimes ever goies into the initial setup but then all of a sudden it goes white. I've opened up the screen and verified and reconected all connections but still the problem persists. Also I've noticed that its not any action I make that causes it; more like a heat/timing issue. Per advice above, I will check the connections in the body but does anyone have any other ideas?!?
Click to expand...
Click to collapse
Sounds like the image could not be loaded completely.
The framebuffer is initialized correctly after cold boot, but afterwords booting into wince fails.
So maybe it's pure software issue (flash content is corupt -> image is broken).
Other possibility: Some region of your flash is damaged (more hardware related).
jahshappybus' Orange SPVm5000:
...
poweded her up the phone works fine in portrate and landscape view but as you rotate the screen so it is inline with the keyboard the screen fades to white about half way.
Click to expand...
Click to collapse
Looks to me like a typical cable issue. Maybe someone twisted the screen the wrong way!
So this is what i guess at least.
Regards,
scholbert

White screen
99 % of these white screen faults is a typical cable issue. And you don't have to twist your screen wrong way to have this problem, also.... just twist it too often First you have to see if the device is working, apart the screen.... call the number of your phone see if it is just screen related problem. Broken display cable will leave your device oprational, you just don't see the image.
I know it is "less painfull" for people to think it is a software problem.... (The "it would not happen to me" syndrome ) but sometimes things just brake, and moving parts are most risky...
The fact you don't see the damage is of no importance due to the size and nature of the damage. Don't expect to see broken wires in the cable. And even if you check the cable by you instrument, somethimes it will show you it's ok, but in some positions it will loose contact.
Try a different cable... that way you'll be sure.
Best regards, and all the luck!

"Looks to me like a typical cable issue. Maybe someone twisted the screen the wrong way!"
I agree and luckily, finally paypal do as well.
It is being boxed up to a red faced seller as we speak.
A happy ending for me (speaking to soon?)

i hav the same problem as u "HELLCRUSHER" and i flashed also but was not able to cure
still hav this white screen ..

Found this link for some where selling the screen cable assmebly.
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=300254338133
Hope this is of use.

HTC Touch Diamond Screen not responding

Hi All,
My diamond screen suddenly stopped responding. The screen calibration is also not working. I tried a hard reset and after that, it stopped at the screen 'Tap the screen to setup your windows phone'. I am not even able to do that. Any help is appreciable. Thanks in advance.

jitheshg said:
Hi All,
My diamond screen suddenly stopped responding. The screen calibration is also not working. I tried a hard reset and after that, it stopped at the screen 'Tap the screen to setup your windows phone'. I am not even able to do that. Any help is appreciable. Thanks in advance.
Click to expand...
Click to collapse
Try re-flashing a rom, or maybe your touch screen (digitizer) needs replacing, if you do this yourself i would recommend buying the digitizer and lcd together as one, it will make a whole lot easier trust me lol. The lcd screen is easy to break.

Had this problem, too, but since I couldn't get back to stock SPL at that time I put my Diamond into a shelf for about 2 days.
When I then tried to get back to stock SPL the screen suddenly responded again.
So, try to take off the battery for a long time (more than a day) and hope it recovers.
Didn't have the problem again.

Change the Touch Screen
jitheshg said:
Hi All,
My diamond screen suddenly stopped responding. The screen calibration is also not working. I tried a hard reset and after that, it stopped at the screen 'Tap the screen to setup your windows phone'. I am not even able to do that. Any help is appreciable. Thanks in advance.
Click to expand...
Click to collapse
I had a similar problem solved with changing the touch screen since the phone was under warranty I have to revert to the stock SPL and stock ROM before I gave it for service. If your phone is not under warranty you can buy the touch screen from ebay.com with a manual and all required instruments for replacing the same.
This happened to me because I was talking to someone over an hour in a humid place which caused sweat to get into the phone through the speakers.
Regards,
V.Balaji

Solution
Okay, I've just had this problem with an HTC Touch, and I think this works with any HTC that has a "digitizer" rather than an all-in-one touchscreen (I think newer phones have digitisers).
I'm not sure if this will always work, but I've just done it - sometimes the inactive touch screen is "broken" because the layers are stuck together (so the phone can't tell where the touch is, hence unresponsive). With mine, I looked at the screen side on and could see a kind of "oily" patch in the light.
The solution is to get masking/gaffa tape - the very sticky brown one. Stick it down on the screen/digitizer and then keep pulling it off - this pulls the layers from each other. I kept repeating this lots before it worked - and in the end I pulled the top layer completely off (I think you should pull from the top of the phone, as the layers need to be attached at the bottom of the screen/digitizer). Once it pulled away, I gently lay it back down (after panicking!!) and hey presto it started working again.
Good luck!

salterlee said:
Okay, I've just had this problem with an HTC Touch, and I think this works with any HTC that has a "digitizer" rather than an all-in-one touchscreen (I think newer phones have digitisers).
I'm not sure if this will always work, but I've just done it - sometimes the inactive touch screen is "broken" because the layers are stuck together (so the phone can't tell where the touch is, hence unresponsive). With mine, I looked at the screen side on and could see a kind of "oily" patch in the light.
The solution is to get masking/gaffa tape - the very sticky brown one. Stick it down on the screen/digitizer and then keep pulling it off - this pulls the layers from each other. I kept repeating this lots before it worked - and in the end I pulled the top layer completely off (I think you should pull from the top of the phone, as the layers need to be attached at the bottom of the screen/digitizer). Once it pulled away, I gently lay it back down (after panicking!!) and hey presto it started working again.
Good luck!
Click to expand...
Click to collapse
Thanks alot the method really worked , i really owe you dude thanks again

Putting the phone in the fridge makes screen work!
I know this is an old thread but why does putting the phone in the fridge for a few minutes make the touch screen work? Even if I put it out of a moving car and it cools down, then it works for a bit.
Anyone know why this is and how I can fix the phone permanently?

Replaced my screen, now the screen won't turn on

Hey guys, I cracked the screen on my HOX so I replaced the screen with a unit from directfix.com
After double checking all of the flex cables I tried to power the phone on and I am getting nothing from the screen and the vibration motor is constantly buzzing.
The only signs of life is the red LED, the three capacative buttons will light up, and the aforementioned constant vibrating. If i hold the power button to attempt to turn it off the buttons blink several times then it seems to stay on after that.
Has anyone heard of a problem like this before? Its killing me not having my HOX! I had to put my sim card in my old iphone 3gs and I have to say that this sucks really bad.

Are you sure you've connected everything correctly? It sounds like there's something being shorted! I'd recommend you to dissassembly again, an assembly again BUT THIS TIME VERY CAREFUL. Best is if you use a video tutorial if you think you're not experienced enough.

nitrous² said:
Are you sure you've connected everything correctly? It sounds like there's something being shorted! I'd recommend you to dissassembly again, an assembly again BUT THIS TIME VERY CAREFUL. Best is if you use a video tutorial if you think you're not experienced enough.
Click to expand...
Click to collapse
Thank you for the advice. I disassembled the phone and carefully put it back together. I took care to make sure the flex cables for the LCD, vibrator/button strip, antenna, volume buttons and digitizer were all carefully connected.
Now the vibrate function seems to work fine as it just gives me a short pulse when I turn the phone on as it usually does. The screen however, still refuses to turn on. I made extra sure that its flex cable was put in the right way and that it was secured with the jaw bone connector.
This video here www youtube com/watch?v=OIeO0DueMcg&feature=youtu.be at about 6:00 shows that you can test the LCD midway through the assembly process.
I tried exactly that and the LCD would still not turn on. I am just hesitant to return it because I know that the chances of the screen being a complete dud are very slim.
Now when the phone is turned on the three capacitive buttons remain on which I know didn't used to happen.

Swilli89 said:
Thank you for the advice. I disassembled the phone and carefully put it back together. I took care to make sure the flex cables for the LCD, vibrator/button strip, antenna, volume buttons and digitizer were all carefully connected.
Now the vibrate function seems to work fine as it just gives me a short pulse when I turn the phone on as it usually does. The screen however, still refuses to turn on. I made extra sure that its flex cable was put in the right way and that it was secured with the jaw bone connector.
This video here www youtube com/watch?v=OIeO0DueMcg&feature=youtu.be at about 6:00 shows that you can test the LCD midway through the assembly process.
I tried exactly that and the LCD would still not turn on. I am just hesitant to return it because I know that the chances of the screen being a complete dud are very slim.
Now when the phone is turned on the three capactive buttons remain on which I know didn't used to happen.
Click to expand...
Click to collapse
Update: So I was thinking the phone was booting up all the way, but I just saw that my computer won't recognize the phone beyond making a connection sound; I just can't see it in windows. As i said the capacitive lights stay on, but if I fold the power button they blink 15 times exactly and the phone seems to power off. Should I assume the SoC is dead or gamble with a replacement LCD?

Swilli89 said:
Update: So I was thinking the phone was booting up all the way, but I just saw that my computer won't recognize the phone beyond making a connection sound; I just can't see it in windows. As i said the capacitive lights stay on, but if I fold the power button they blink 15 times exactly and the phone seems to power off. Should I assume the SoC is dead or gamble with a replacement LCD?
Click to expand...
Click to collapse
Hi, I'm in the exact same situation you have described above! Did you ever manage to work it out, what was the solution? Any info or help at all would be great, thanks!!

I did replace my lcd+digitizer as well as yous. And I had same problem. But it does work now.
1.open up your phone . Take all parts off, separated.
2. Take battery off.
3.Now connect power button.
4. Connect battery.
5.Switch it on (hold pwbt for 2sec), mobo+battery+power button itself.
6.Now wait 20 sec.
7.Now connect LCD ribbon(bottom one),make sure it's right in, push it in far as you can.
8.Now put it righ on bezel and connect digitizer ribbon.
9.Press pwbt and see does it work. If does put rest of stuff together and be happy.
I can make phototutorial on request.
I did it few times. The battery was touching the LCD ribbon and it comes of very little but screen comes off and I have to start all over again.
So make sure that ribbon it's not getting any pressure from battery.
Let me know does that help.
Sent from my repaired HTC One X

Unit is working but screen is black - OFF

I have a KGL unit with RK3188 quad core CPU and 1024x600 screen.
I was working with custom ROM (made by Malaysk)
I didn't update anything recently.
Suddenly that morning, the screen is black.
I am able to hear the radio, and Bluetooth calls are being transferred through the unit, but the screen is totally black, zip, nada, nothing at all.
Any ideas what could get wrong?

I've had this happen before also. Do you see any boot logo at all?
Dave

I see nothing at all. Black all over the way.No logo
Sent from my A0001 using XDA-Developers mobile app

that is a hardware failure
contact yoru seller

unfortunately, the seller completely ignores my messages.

amir77a said:
unfortunately, the seller completely ignores my messages.
Click to expand...
Click to collapse
Did you tried to enter the recovery or it is shows black screen also?
If yes, maybe your display panel is wrong. If you seller ignore your messages, try to check your panel's contact to the board.

Check to see if you can get into recovery. If screen works, turn off lights when in rom. I had issue with auto brightness which was too low. Only way I could fix was to wipe and reinstall and turn off auto brightness.

Just updating... it was a hardware problem.
Flat cable problem + certain transistor.
Thanks for your comments.

How did you figure it out?
Dave

TT_Vert said:
How did you figure it out?
Dave
Click to expand...
Click to collapse
The buttons were OK, I was able to listen to radio, switch stations (via the wheel control), and even BT calls went through.
That made me guess that this is a hardware problem, and not software.

and no matter what you did you never got video ? Ive got this same problem but after a hard reset Ill get the video back sometimes.

TT_Vert said:
and no matter what you did you never got video ? Ive got this same problem but after a hard reset Ill get the video back sometimes.
Click to expand...
Click to collapse
Actually, I even didn't try to hard reset the unit.
Took it from my technician, and it was working, without any hard reset.
To be precise, I'm going to visit him again tomorrow, since the colors on the screen are a bit on the green side, and a bit smeared.
Not a disaster, but not as it should be.
I guess one of the flat cables inside the unit, is not in its place.

amir77a said:
Actually, I even didn't try to hard reset the unit.
Took it from my technician, and it was working, without any hard reset.
To be precise, I'm going to visit him again tomorrow, since the colors on the screen are a bit on the green side, and a bit smeared.
Not a disaster, but not as it should be.
I guess one of the flat cables inside the unit, is not in its place.
Click to expand...
Click to collapse
Did the technician just reseat the cables or was something actually replaced?

jakejm79 said:
Did the technician just reseat the cables or was something actually replaced?
Click to expand...
Click to collapse
At first replcaed something... the second visit, probably things were a bit loosen up...

amir77a said:
At first replcaed something... the second visit, probably things were a bit loosen up...
Click to expand...
Click to collapse
Any chance you could get details on what was replaced?

I had a similar issue - would lose screen output, it would go either black or white. Touch screen would still work, and radio/BT as well.
Then I'd disconnect the flat cable and reattach it, and it would work for a couple of days. Final solution (it seems) was to hold the flat cable with tape/hot glue!

Thank you, mine just went out again, it was fine for a month or so after reseating all the ribbon cables in the ZIF connectors, I'll do it again tomorrow and try securing them with some tape.

markinhosmrk said:
I had a similar issue - would lose screen output, it would go either black or white. Touch screen would still work, and radio/BT as well.
Then I'd disconnect the flat cable and reattach it, and it would work for a couple of days. Final solution (it seems) was to hold the flat cable with tape/hot glue!
Click to expand...
Click to collapse
did you reattach the flat cable with the radio on or off please help me because my head unit had became with black screen but the radio function normaly

Same symptoms here, any updates on what to look for? screen isn't even dim, touch works, sound works, it connects to my hotspot, but no visible screen, Witson PX5.
Which transistor ? I have a multimeter handy

Screen question

I have been given a few old phones and don't know about their histories. One is the TMo Galaxy S3. I am unable to get the charge port to charge correctly, but was wondering about the screen. (see image) I believe it should be black when it's off, but this screen looks different. The only thing I notice when charging is the charge light comes on if I hold the cable right, and the screen does nothing. Is it usable or junk? Any ideas? Thanks!
Pic of screen... http://imgur.com/a/IDg2d

Looks to me like the screen has been dropped or been exposed to moisture.

audit13 said:
Looks to me like the screen has been dropped or been exposed to moisture.
Click to expand...
Click to collapse
So more than likely the whole phone is probably a goner, right?

The phone may be fine and it's a driver issue if everything looks fine in download mode.