Database Users

LCD working but no backlight

Thought I'd try talking whilst going for a jog and managed to get some sweat into my XDA Mini. The result: the LCD still operates, but the backlight is broken.
I took it to a repair shop to see if they could repair it but they say I need a full new LCD - not so cheap. The guy seemed a bit dodgy so I thought I'd double check people's thoughts here before I go and spend the $150 to fix it.

I'm sorry if I'm insulting your intelligence, but have you tried holding down the power button while the screen is on? The backlight can be toggled on and off by holding the power button down a few seconds.
Just making sure!
(Eg. Check your floppy drive before you decide that the hard disk is dead - store attendants can actually forget things like that)

Haha,
Yes I have tried everything relating to normal backlight usage, including a hard reset.
I know the backlight is stuffed because for a while it would turn on for a sec before turning off, then finally it went kaput.

Well the backlight probably is stuffed. And $150 is a bit steep for a new screen, but I doubt you will find any better - though if you want try eBay. I just searched eBay US for 'xda mini LCD' and got a range of LCDs from $70 to $100.
The installation isn't too hard, as long as you're careful - it just involves opening the Magician (which takes patience, but isn't too hard or risky), unplugging the old screen, detaching it, and installing the new screen.

Darn,
I found a screen for AUS$115 delivered on ebay.
Is there any way I can tell if I have the black or yellow screen connector without opening the phone up (I'd prefer to have to open it as few times as possible). My guess is that it would be one of the black ones as I think it's an earlier model.

Hey maximus, I know it's been a while. Did you fix your screen? I've got a Trinity with me (also known as Dopod D810) and I put a new screen into it. It worked, but after a few weeks, the alignment went off and would not reconfigure no matter what I tried. Then suddenly, the backlight went dead but the LCD still worked (I can see the content on the screen if I shine a torch on it). I'm an experienced phone repairer but I thought I'd check to see if you did anything to fix your original screen.
I've got the phone open - the connectors are fine. I've tried applying light pressure to the sides of the LCD, hoping that maybe it was just a loose connection inside the LCD, but to no avail.
Looks like I'll have to buy another LCD

hey i'm have=ing the same problem !
there are not any option but new screen

8525 White Screen of Death - Is there Hope?

Ok so I have the fabled white screen issue on an 8525. When it first occurred I searched and read all the write ups, decided I had the ribbon cable issue. Took it apart and simply unplugged and replugged the ribbon cable with great results, no more white screen.
I repeated once when it came back after being bumped around, again with positive results...but this last(3rd)time instead of it working I now get white screen 95% of the time. I re-notched the sliders the first time, and last time.
During the 5% it works I noticed the charge light would correspond to it going white.This never happened before...
Example:
When OFF - Connect charger, Red light for 1 second, then nothing=White screen from power on
When OFF - Connect charger, Red light for 1 second, then orange charge indicator = normal startup
When ON and Working - Connect charger, no light, no charge - reboots to white screen
When ON and Working - Connect charger, orange charge indicator, reboots normally.
There is no heat or noticeable pressure on any parts, everything seems to fit normally.
It does boot normally with screen white.
Any ideas? I really don't want to give up on this thing, is there any hope? or just ebay it for parts?
Thanks
-Nick

same problems here, if someone could just tell me what parts to order, cause I have no warranty (ordered over ebay). I tried both the instruction that has chinese fonts on the page , and other from R&R, no luck, white screen all the way..

I had the WSOD and took it apart and reassembled a few time. The 3rd or 4th time the screem came back, but now it is shifter to the right around 1/4" or so. I mean there is just white along the left edge, then the normal screen/color starts and is cut off on the right.
Does anyone know how to correct that, is it related to the same flex cable or is there something else I disturbed?

mine will fade to white.. then i just push the power to put it in standby, then push power again to wake it back up and back to normal.. it rarely does it but still annoying...

If You Ordered From At&t
I had this problem about 2 weeks ago!!!!
I thought it was a fluke!
Anyway, walked over to 43rd and Lexington (NYC FOR THOSE WHO DON'T KNOW THAT MANHATTAN IS THE CENTER OF THE WORLD)
and they gave me the EXCHANGE HOTLINE for at&t.
I called them up, told them my screen is fading to WHITE and the lady sent me a new or referbished phone.. i dont even know.
Just so you know, i ordered my phone on AMAZON with a new activation. its covered under the MANUFACTURERS warentee for a full year from the date of purchase... so is the REPLACEMENT PHONE... but not from the date of replacement, just the date of purchase.

did anyone get deeper into this yet? I got a 8500 (need those without camera) from ebay USA, already with white screen. After reading here, that this is mostly an issue with connectors, I bought it, disassembled it and reassembled it, though still white. Should I give the contacts a treatment with contact-spray? (there's a tuner spray that doesn't leave residues) Or is there something broken within the ribbon cables? Seller said it has been dropped (but he also said, he didn't want to open it, while it clearly has been opened, one screw missing and warranty seal gone). It ssems to boot up normal otherwise, I hear a sound after the boot process, so probably this isn't a software issue?
Edit: another thing I noticed: When I run it without any keyboard connected at all, it's also white. I then connected the dpad again, and I could see a hint of the at&t logo in the lower part of the screen. When I pressed around on the back of the dpad a bit, all LEDs would go on/off... Sound to me like the dpad has gone bad, possible?
Edit II: Got it. Using a 20x eyeloupe I found that the PCB of the DPad is broken under the little chip on it. Now I just gotta find a dpad here in germany, but I assume those Hermes' are all equal...

hello
where can I get manual (if there is one) for disassembling hermes. link in wiki does not work.
thanks

this worked good for me
http://inuchanbt.blog54.fc2.com/blog-entry-100.html

Anyone know if this applies to the 8125 as well? I've got a flickering white screen. I had dropped my phone a few weeks back and cracked the LCD. Replaced it with an OEM LCD - it worked fine for about 2 weeks and then just suddenly went all white. Phone still works, I can still get calls - just can't see who is calling.

I don't recall that the wizard had the same problem... Though from a logical point, it seems that there is an issue behind white screens and the thumbpad being responsible for it, so it may well be the same thing. Perhaps just disassemble the wizard (there should be a howto too) and check if theres a similar connection from mainboard to thumbpad circuit.

Is there a disassembling manual for a imate k-jam that anyone knows about?

Here's a website with a video manual i found useful...
http://viralelectronics.com/category/howto/page/2/

Figured out the problem...
The only reason I figured out the screen goes blank is because the motherboard loses connection with the screen when you slide the keyboard out...try this out and see if the screen comes back...
put the screen on sleep mode (no white screen)...then slide out the keyboard and tilt it a little hard after pressing on the screen and put the power on. if it doesnt work try again it might take some pressure and power to make it work...be careful not to put too much power but as far as I went, it's a very sturdy cell.
alternately, slide out the keyboard in sleep mode, and press all the buttons really hard and then try to press the power button (press more towards the space bar because that helps)...if any of this works and the screen comes back on even just for a second...follow the following
Go back to the person who gave the link to the site with opening the HTC instructions and follow through and clean the whole phone up from dirt around the screen and such...you dont need to put those rubber things or whatever it says to put on the screen...then when you are putting it back together, press hard on the wire connecting the touch screen to the motherboard. I suggest sealing it with a good tape...and then you are good to go! I did it but it had a few glitches...the screens contrast sometimes goes awry but it is still visible and responds to touch. Also, the physical buttons work as well!!
Good Luck and do it at your on risk.

Have any of you tried this? http://forum.xda-developers.com/showthread.php?t=321163

hope the best

i tried this and it worked for me. i also pressed alil hard around the d-pad and heard a pop. i think it poped back into place.
thanks

razor rc said:
i tried this and it worked for me. i also pressed alil hard around the d-pad and heard a pop. i think it poped back into place.
thanks
Click to expand...
Click to collapse
i still have this problem.

fixed my wsod
I noticed a few days ago my 8525 screen went white, rebooted and it went away. Today it came back, but would only go away for a few seconds and then back to white. After reading some forums I decided to check the connector. I took the phone apart following this site as a guide. I removed the connector on the board side and cleaned the contacts with a qtip and denatured alcohol. Phone has been perfect for the last few hours, no more white screen of death. I didn't mess with the connector on the LCD side, just the board side. I'm a computer tech and I found it quite annoying to disassemble, but I managed without causing any damage, however, I'd rate the job at about a 8/10 as far as technical ability.
Joey

warped0202 said:
I noticed a few days ago my 8525 screen went white, rebooted and it went away. Today it came back, but would only go away for a few seconds and then back to white. After reading some forums I decided to check the connector. I took the phone apart following this site as a guide. I removed the connector on the board side and cleaned the contacts with a qtip and denatured alcohol. Phone has been perfect for the last few hours, no more white screen of death. I didn't mess with the connector on the LCD side, just the board side. I'm a computer tech and I found it quite annoying to disassemble, but I managed without causing any damage, however, I'd rate the job at about a 8/10 as far as technical ability.
Joey
Click to expand...
Click to collapse
i agree that this is one of the first things to try in curing the white screen issue. Others may find their problem runs a little deeper and the contacts on the d/pad chip are broken. An improvised cure which may not be very permanent is to place a little padding on the surface of the chip as described here:
http://forum.xda-developers.com/showthread.php?t=321163
If you have appropriate heat gun equipment you can re-flow the solder on the d/pad daughter board - but remember to remove the sticky key pad layer or you'll cook it!!
I regret that I'm closing this thread because we have several "White Screen" threads and the questions and answers are being spread all over the place.
Please use this one for future posts:
http://forum.xda-developers.com/showthread.php?t=321163
Mike

Screen went black while texting

I was tapping out a text when all of a sudden the screen went black. the capacitive buttons still light up, but absolutely nothing from the display..
I'm kind of at a loss for what could have happened. the flex cable looks good and where it should be and doesn't appear to be loose...

Oh, and the digitizer still works because I can go through the motions of the lock screen and the phone vibrates.

open it up and make sure the connections on the flex are good, might need new flex cable and/or lcd

I tried to file a claim through Asurion and they said it wasn't covered! Kind of baffled at that. So I went in to my local Tmo store... renewed my contract, but made my bill $10 cheaper a month, and they were able to do a warranty replacement and I'm getting a MyTouch 4G Slide

Same thing just happened to me, I left the keyboard open for 10 minutes and when I came back it had a black screen (not off just black) can't get it to work. Im gonna try to take it apart and reconnect the flex cable. Ill let you know if it works.

G2 Black Screen
Hey, did anybody find a solution to this? I bought this T -Mobile G2 used so I have no type of warranty. The screen stays dark, but vibrations, ring tone, and the lights behind the"home& menu screen at the bottom work. I replaced the screen/digitizer but this did not fix it. still the same. what else might be wrong?
---------- Post added at 03:02 AM ---------- Previous post was at 02:06 AM ----------
okay well I just found out that LCD screen replacement part and screen digitizer part are different. so I have purchased LCD screen. Will update whether or not this works as it seems through my internet searching many people have had this prob with the G2.

I have the same problem, black screen, touchscreen works because I can feel the feedback when I unlock. I've also done lcd replacement. That didn't help either. The only way I can get the phone to wake up is by squeezing the top left corner in the area by the proximity sensor, and the power button at same time. Doing that it takes me like 10 tries to get it to wake.

well you probably either didnt get a good connection at one of the cable points when you replaced the lcd (open it back up and check this) or you need to replace the entire flex cable

This happened to my sister's Desire Z (except she dropped it). Screen was black but phone was working. I reseated the LCD flex cables but that didn't fix the problem so I replaced the LCD module thinking it was dead. The screen was still black so out of desperation and anger I gave it a hard smack and it started working. It has been working for three months now. Go figure
Original LCD was probably good and the issue was probably due to a faulty flex cable, however on the DZ these cables are pretty complex and expensive (costs more that the LCD module)

A500 seems bricked but not bricked (I think)

Hi, I cracked my outer screen on my A500 and just got a replacement. The tablet worked fine though. The touch screen still allowed selection of anything on the entire screen even though it had lots of cracks on it. The LCD screen wasn't damaged at all.
Followed the videos to replace the screen that are posted to the letter, slowly and methodically. So I separated the outer screen from the display OK (it was a bit of a challenge since the double sided tape was holding pretty good).
Everything went together OK. I go to start it and the screen glows as it normally does as the very first part of the power-on. But nothing else. No logo, no messages - nothing.
But I plugged it into my PC via micro USB on a whim and lo and behold, I can actually see the internal storage and SD card. Looks like everything is there. And if I do the long press where I recall some of the icons are, I can feel the slight vibration as it selects the icon. So it would also appear that the touch screen is functioning too.
So it looks like the unit boots but for some reason, won't display. The screen just glows faintly like the very first part of a power-on.
Is there hope? Is there something I can do or check? Is there a way to verify the LCD without buying a new one?
Thanks,
Bob

RKramkowski said:
Hi, I cracked my outer screen on my A500 and just got a replacement. The tablet worked fine though. The touch screen still allowed selection of anything on the entire screen even though it had lots of cracks on it. The LCD screen wasn't damaged at all.
Followed the videos to replace the screen that are posted to the letter, slowly and methodically. So I separated the outer screen from the display OK (it was a bit of a challenge since the double sided tape was holding pretty good).
Everything went together OK. I go to start it and the screen glows as it normally does as the very first part of the power-on. But nothing else. No logo, no messages - nothing.
But I plugged it into my PC via micro USB on a whim and lo and behold, I can actually see the internal storage and SD card. Looks like everything is there. And if I do the long press where I recall some of the icons are, I can feel the slight vibration as it selects the icon. So it would also appear that the touch screen is functioning too.
So it looks like the unit boots but for some reason, won't display. The screen just glows faintly like the very first part of a power-on.
Is there hope? Is there something I can do or check? Is there a way to verify the LCD without buying a new one?
Thanks,
Bob
Click to expand...
Click to collapse
Well Bob, glad to see some folks take matters into their own hands!
I can't find the post, as it was a couple years or so ago. But I specifically remember a similar situation. And from what I know, when you tighten/place the screens together, you have to make sure you tighten them evenly, or else nothing works. Something to that effect. Also, I would probably take it apart again, and double check that everything is connected the proper way. Look for possible bent pins and such.
As far as I know, there are no software maintenance apps to check the lcd. Not to my knowledge anyhow, As we pretty much have all maintenance software for the 500/501.
Wish I could be of more help. I know awhile back, a couple of folks here in the forum replaced theirs after their kids stepped on them.

[Unsolved] Distorted greenish screen, black except for split second on boot

Last night I was busy using my S4 with it plugged into my PC.
It was resting on a flat hard surface. Nothing abnormal.
I was looking at the screen, not touching the phone and it suddenly turned a greenish tint colour with noisy coloured artifacts on the screen. I could still use the phone, but it looked odd. Everything was still visible at this point, just tinted green and with the artifacts.
I decided to power off the phone, and then power it on again to see what would happen.
Afterwards, the screen failed to turn on... somewhat. It's been doing the following behavior since:
When turning on, screen on black, following by a quick split second flash of the 'Galaxy S4' logo. Then black again. When charging the phone, I can see the battery 'loading' symbol flash too, or when going to download mode, I can see the 'warning' flash. When holding down the power button to force the phone to reboot, I can see the screen flicker too. It appears that I can see some flash when the screen first powers on... but it can't stay powered on(?)
The first time this happened, I could see a 1 pixel line on the top representing the colours of my boot animation, when booting but that only happened a few times. Now it does not.
I have opened the device, and checked the screen cable. Detached it, inspected it for dirt or dust. Gave the connectors a gentle blow with a hair dryer to remove any dust and re-attached to no avail.
I can still access the device via ADB and see it's screen via Android Screen Monitor.
The digitiser is working, as I can touch the phone and control it... it appears to be a problem with the GPU(?) or the LCD?
Can anyone make any recommendations? I really hope I don't have to spend lots of money on fixing this.
Thanks, all!

Shameless self bump. Merry Christmas! Santa threw a nice BRICK of coal (or phone) for me

I don't like to bump, but I am going to have to... sorry
I'm abroad, and Samsung said they can't fix it under warranty while abroad? I'll have to send it back home. Really? Bleh!
Has anyone else had this issue before? Is the problem just the LCD, or could it be something else?

One more bump... Anyone have any idea?

Bump

+1

valsivief said:
+1
Click to expand...
Click to collapse
Are you also having the same issue?

If I get my Samsung looked at by a Samsung repair center overseas (outside my country of warranty) will that void my warranty?
Still haven't got an answer for my issue... so.... bump!