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.

Screen died?

Last night I was out and during the night I pulled my desire z out of my pocket to find that the screen was dead, the soft touch buttons were still lit up and working but no display. I pulled the battery and tried to reboot and no luck, you can hear it booting and even unlock/receive calls and txts etc once it has booted up just the screen stays blank the whole time so have to do everything on feel.
Essentially does this just mean my screen has a hardware fault? is it worth trying to fix? I assume the only option would be to purchase a replacement screen and dissemble and reassemble it?
(warranty is not worth it as I live in New Zealand and would have to send my phone back to the UK where I bought it from, also I have dropped it quite a few times so probably voided anyway...)
Thanks in advance for any input

Does it never display anything? So not even a flash during boot or something?
Because then it is probably a hardware problem.
Since the soft touch buttons do still work I think there might be a little crack or something in the flat cable that connects the bottom half with the top.
Maybe you could check whether you can see if the cable is broken or not?
The best thing to do then is to look for a replacement and try to fix it yourself or bring it to a shop where they can do it for you.

No it never displays anything, completely dead the whole time. The touch input is still working though as I answered a phone call this morning on it by making the usual gesture just without being able to see anything. Doesnt seem to be anything wrong with the cable itself as far as I can see. Yea might have to get someone to have a look at it.

My phone is acting the same. I dropped my phone in the pond before, but pulled battery out on time and had it in rice for a day. My phone was still working for about two weeks after that incident. I dropped it and had one little crack at the top of the screen and about a week after that it died when I had a water balloon fight with the phone in my pocket. D;
Do any of you know if the replacement lcd screen/digitizer for the Desire Z would work for the G2?

I had the same thing happening to my G2 screen, only it was intermittently working for a little while, then just completely died and wouldn't work. It was doing this crazy flickering thing then the back light wouldn't go on at all. If I held the phone at a certain angle in the sun, I could see that the pixels were indeed working on the display, but there was no backlight to make them normally visible.
So I purchased a replacement screen from ebay and carefully followed the directions on a youtube video for a G2 take apart. Its not a hard task to take apart and get down to the screen itself. It was rather easy. After putting it back together the screen still didn't work! Sounds work, i can also receive calls etc. But the screen still doesn't work!
Is there any way that this could be a software issue?

Oh and PS, I believe the LCD replacement would work for both the desire Z and the G2. They are identical phones after all right? I'd say its a safe bet. The screen I bought was only 35 bucks. Didn't think that was a bad deal.

Another dead screen or something else?
Few days ago my phone fell of the couch onto a rug - no big deal, so far it has survived much worse, but when I picked it up, the colors were all messed up - overly green and red. Tried restarting - no luck. Everything worked fine, except the colors, but then the screen turned of completely. I could hear notifications, phonecalls, but the screen was dead. After some tapping on the screen, it turned on again - with ****ed up colors. Then started flickering and was gone again. Few more times I could turn it on by tapping before it was dead for good.
Figured, after all these drops it survived, maybe the screen connector is a bit loose. I mean, I could sometime get a contact when tapping it, so I dissasambled it completely, secured all the connection, put it all back tougether and fired up - same thing: dead screen, phone working.
Has anyone had such problem before? Is it screen that is dead, or connector or... I have no clue... I would like try to fix it on my own, with some replacement parts I could get on ebay - but, what gave?

HTC One X sunk in the waters

I have an HTC One X that was dropped in the water.
The guy only wants the data, and i took it out of it and gave it to him. So he told me that the devices is all yours.
I've been trying to fix it ever since he told me that.
The phone boots up normally, sound is working, vibration is too.
The screen's backlight, although set to maximum, it too dim due to water damage. So i took it to a repair shop, he replaced the screen, and a piece of hardware inside the board, but the screen works for about 10 minutes then completely goes off. So we put back the old screen and peice and the same thing happens, 10 mins of dim brightness... then no brightness at all. I'm currently trying to root it so i could stream and control it via PC. I now have it with a very dim screen that works for 30 minutes then needs to rest for 5 minutes so it could go on again.
Any suggestions on what i should replace to really solve that problem is very much appreciated as i really would like to make this device go alive again.

Put him in rice..And it will pull water out from phone..If that doesn't help I think that motherboard is too damaged..

big noob said:
Put him in rice..And it will pull water out from phone..If that doesn't help I think that motherboard is too damaged..
Click to expand...
Click to collapse
we actually tore it down and left its parts for about a week in a box, would it still help if i did that?

Was the box warm? If not maybe there is still a little bit of water on connectors or somewhere..Cause I had the same problem on other phone..

[Q] Please help! Strange problem with my HOX

Yesterday i dropped my device from one feet. It turned off and i turned it on.
Now lower part of screen and capacitative buttons dont work. i will attach a image(non-working area outlined in red)
My warranty has expired so i cant exchange it for a new one. What should i do? Can i fix it by myself?
Please help me

Fycola123 said:
Yesterday i dropped my device from one feet. It turned off and i turned it on.
Now lower part of screen and capacitative buttons dont work. i will attach a image(non-working area outlined in red)
My warranty has expired so i cant exchange it for a new one. What should i do? Can i fix it by myself?
Please help me
Click to expand...
Click to collapse
Hi,
Only thing I can think of is that somehow it has damaged the cable from the touchscreen or the tiny wires that feed into the cable without damaging the screen. I came across a brand new screen I was replacing once for someone that had a similar problem where the bottom left hand corner wouldn't respond to touch unless there was firm pressure on the screen to create contact, and this was a brand new screen. It could also be that the touchscreen connector needs to be pushed back onto the board if it's come a bit loose.
If this is the problem, you can fix it by yourself although I'd have a good look around youtube, there are heaps of DIY videos of how to replace screens. If you do go down this path I recommend you replace the touchscreen/LCD/LCD frame in one go, as it's generally already pre- assembled the only thing here is that there are 3 brands of LCD's HTC used with the phone and they aren't all compatible, and you can only tell by pulling down your phone and looking at the LCD flex cable colours, and the other thing is that the screens that are available aren't always the same quality as the original. If this sounds to hard your best bet is to take it somewhere and diagnose the problem just in case it's something else

Which replacement screen (Sharp, sony acer)

ok so... the store broke my lcd while they were trying to remove the digitizer... and now i am looking at ebay on which lcd+touch assemlby to buy and i have a question. are the sony, acer and sharp lcd versions compatible with all one x mobos? i did some research and found that the sony version is the best (so they say)

and313 said:
ok so... the store broke my lcd while they were trying to remove the digitizer... and now i am looking at ebay on which lcd+touch assemlby to buy and i have a question. are the sony, acer and sharp lcd versions compatible with all one x mobos? i did some research and found that the sony version is the best (so they say)
Click to expand...
Click to collapse
Hi,
The Sony and Sharp are not compatible with each other( I've tried to replace one with the other), I've never come across the Acer LCD in Australia so I'm not sure. If you don't know how to tell the Sharp and Sony apart, the Sharp has Green backing on the flex cable, while the Sony is sort of orange with a few yellowish stripeson the back of the LCD flex cable. Sorry I couldn't find any of my photos which show the difference. I would recommend buying the LCD/digitizer combo and a separate midframe to mount it on, as it comes with new 3M adhesive, but you may also have to add a few TINY drops of instant adhesive, I say tiny as too much will press out under the digitizer and will show up, but I have found that without it the digitizer will lift from the frame eventually due to the tight fit of the frame in the rear shell of the HOX.
Hope you go ok!
---------- Post added at 06:45 PM ---------- Previous post was at 06:41 PM ----------
Sorry, just a bit of additional info, have also come across posts saying the colours of the LCD look washed out with the wrong LCD.

okhughes said:
Hi,
The Sony and Sharp are not compatible with each other( I've tried to replace one with the other), I've never come across the Acer LCD in Australia so I'm not sure. If you don't know how to tell the Sharp and Sony apart, the Sharp has Green backing on the flex cable, while the Sony is sort of orange with a few yellowish stripeson the back of the LCD flex cable. Sorry I couldn't find any of my photos which show the difference. I would recommend buying the LCD/digitizer combo and a separate midframe to mount it on, as it comes with new 3M adhesive, but you may also have to add a few TINY drops of instant adhesive, I say tiny as too much will press out under the digitizer and will show up, but I have found that without it the digitizer will lift from the frame eventually due to the tight fit of the frame in the rear shell of the HOX.
Hope you go ok!
---------- Post added at 06:45 PM ---------- Previous post was at 06:41 PM ----------
Sorry, just a bit of additional info, have also come across posts saying the colours of the LCD look washed out with the wrong LCD.
Click to expand...
Click to collapse
ok tnx for the info... and i was thinking i can just order whatever. i checked the panel_type in the last_kmsg and i found that i have the replacement screen for which nobody knows who makes it. but it is a warm panel so it probably is sony... but i have to rip it apart to be certain
Sent from my One X using Tapatalk

and313 said:
ok tnx for the info... and i was thinking i can just order whatever. i checked the panel_type in the last_kmsg and i found that i have the replacement screen for which nobody knows who makes it. but it is a warm panel so it probably is sony... but i have to rip it apart to be certain
Sent from my One X using Tapatalk
Click to expand...
Click to collapse
That's the only downside - having to pull phone apart to check which one you have. Also another tip, phone need to be on to change LCD's, boot phone up with it apart, then wake up with power button on old screen, then sleep with power button, change screens then wake up again. There are plenty of vids on youtube to help, if new screen doesn't activate, check flex cable is in square and all the way - have had this problem before also.

okhughes said:
That's the only downside - having to pull phone apart to check which one you have. Also another tip, phone need to be on to change LCD's, boot phone up with it apart, then wake up with power button on old screen, then sleep with power button, change screens then wake up again. There are plenty of vids on youtube to help, if new screen doesn't activate, check flex cable is in square and all the way - have had this problem before also.
Click to expand...
Click to collapse
tnx... you answered all i was wondering about really appreciated
edit: ok so i riped it apart again and its a sony. for anyone who is wondering what might happen if the wrong screen is attached to the mobo watch this
https://www.youtube.com/watch?v=DHdtgu4rbxI
and the store said: why you dont just buy the "original" for 40€.... god i hate such people
Sent from my One X using Tapatalk

okhughes said:
That's the only downside - having to pull phone apart to check which one you have. Also another tip, phone need to be on to change LCD's, boot phone up with it apart, then wake up with power button on old screen, then sleep with power button, change screens then wake up again. There are plenty of vids on youtube to help, if new screen doesn't activate, check flex cable is in square and all the way - have had this problem before also.
Click to expand...
Click to collapse
I replaced my screen, but I powered down when removing the screen, and putting the replacement in. Now neither will light up. How do you solve this?

There are no guarantees with this, but try pulling the battery out for a minute or two. then with the original screen in, boot up and let it get to the lock screen wait for the screen to sleep then press power button to wake up then again to sleep. when the screen is sleeping try changing over the screens and then press power button to wake again. this is assuming that the screen displays on startup, but even if it doesn't try this process anyway. if it doesn't work, try doing with the new screen back to the old screen after pulling the battery. I have only ever come across this once, but it wasn't from powering down during a screen change, but pulling the battery seemed to fix it.

okhughes said:
There are no guarantees with this, but try pulling the battery out for a minute or two. then with the original screen in, boot up and let it get to the lock screen wait for the screen to sleep then press power button to wake up then again to sleep. when the screen is sleeping try changing over the screens and then press power button to wake again. this is assuming that the screen displays on startup, but even if it doesn't try this process anyway. if it doesn't work, try doing with the new screen back to the old screen after pulling the battery. I have only ever come across this once, but it wasn't from powering down during a screen change, but pulling the battery seemed to fix it.
Click to expand...
Click to collapse
I tried that, didn't work. I think I know the problem now. after searching on multiple forums, I think it's the 220 coil. A lot of people have had a similar issue, and they say they've solved it by replacing the coil. What I want to know is, how I managed to short the coil in the span of a few minutes, despite having used the same screen as the cracked one.

It is possible to do, although they can go for no reason, I recommend taking it somewhere to get coil replaced, it is a very fiddly job and you need to have a steady hand and the right tools (hot air gun) although my father managed to do one with a standard soldering iron, although it wasn't the best job. you risk damaging other components also if they blow off the mainboard (if you can find them), worst case scenario is the display ic has gone - that one will have to be done by a professional.

what a sh!t phone
we tried to repare it 2 years ago.
but failed.
so i just the pieces to gether wanted to see if i can fix it.
still not lcd just touchscreen (and now im not sure if i even have touchscreen lol maybe i broke that to now not sure
anyway sucks i have a brand new lcd touchscreen with frame we bought back then. and its even the right screen a green flex cable like the original one and still noting so i guess i broke the 220 chip thing how dont know. but not sure if i can replace it sucks it was a good phone
is there any help a easy fix? or do i really need to soldern that chip i cant sell the phone since there is personal data on it contacts and pictures (i guess dont remembrer)

It may still be replaceable, if it's been sitting for 2 headed is the phone taking a charge? It needs to be on to change the screen. If it is charging and booting up, and the screen still won't work when being changed try doing a hard reset by holding the power and volume down button until it restarts - have had advice by someone who repairs phones for a living that this should reset what the phone is looking at for hardware and you should be able to do screen replacement. Failing that chances are it's going to be dead. Not much point in selling it these days as they aren't worth much these days. If the phone won't start the battery may be dead flat. The phone needs some voltage to run its charging firmware, you can try to get it charging by leaving on charge for 10 min or more, even if no charge light, then hold power/vol up/vol down at the same time to recalibrate the charge circuit, it may start to charge after this.
Let me know how it goes, I wouldn't spend too much time on it, unless it's now a project..

okhughes said:
It may still be replaceable, if it's been sitting for 2 headed is the phone taking a charge? It needs to be on to change the screen. If it is charging and booting up, and the screen still won't work when being changed try doing a hard reset by holding the power and volume down button until it restarts - have had advice by someone who repairs phones for a living that this should reset what the phone is looking at for hardware and you should be able to do screen replacement. Failing that chances are it's going to be dead. Not much point in selling it these days as they aren't worth much these days. If the phone won't start the battery may be dead flat. The phone needs some voltage to run its charging firmware, you can try to get it charging by leaving on charge for 10 min or more, even if no charge light, then hold power/vol up/vol down at the same time to recalibrate the charge circuit, it may start to charge after this.
Let me know how it goes, I wouldn't spend too much time on it, unless it's now a project..
Click to expand...
Click to collapse
ow volum down? okay will try that. but i think i killed it lol cause the charging light wont come on anymore lol
it was just a idea that poped up in my head, that maybe i can save it so i friend can use it but i think i will just trow it away lol or something will give it a shot and see. will report back
nvm it's dead it wont even boot lol. i think i burned sometime lol that little cable that onder the battery thats conects the botem part with the other fliped out 2 time and 3time it smeled burned lol nvm

Sounds like it may have shorted, a replacement is fairly cheap , just depends on how serious you are about spending money on it.
I forgot to mention that when calibrating charge circuit with power/vol up/vol down all held down at the same time, they need to be held down for at least 2 minutes.

okhughes said:
Sounds like it may have shorted, a replacement is fairly cheap , just depends on how serious you are about spending money on it.
I forgot to mention that when calibrating charge circuit with power/vol up/vol down all held down at the same time, they need to be held down for at least 2 minutes.
Click to expand...
Click to collapse
nvm i think i fried the cpu or something lol it wont turn on anymore.
i trew it in the bin

Probably the best result, it's probably cheaper to to buy a second hand one and also cause less aggravation when you can't work out why it won't work. You could always sell the replacement screen.

okhughes said:
Probably the best result, it's probably cheaper to to buy a second hand one and also cause less aggravation when you can't work out why it won't work. You could always sell the replacement screen.
Click to expand...
Click to collapse
dont think i will sell it i mean who would buy it? lol but guess i could try for like 20euro or 10 lol.
and have 2 batteries for 10 or 5 euro lol
have 3 backcovers also 2 white and 1 black.
we bought every thing to repaire it but yeah.
could maybe sell some **** but pff dont knopw. (its my oncles old phone will ask him (maybe sell every thing exept de motherboard)

That's what I'd do, try and sell it for parts minus the mainboard. If that doesn't work, put it away somewhere and if you come across a dead one cheap, swap the mainboards out (providing it has the same screen - that's a given). Good luck with whatever you decide to do. :good: