Recently, I took time to replace the screen on my s3. (Just the Screen not the digitizer). After I attached the newer screen, I turned the phone on, theres sound, vibration, etc. But the display is not shown at all. Is it the digitizer that broke? Is it something else that broke?
P.S While I was removing the cracked screen, i accidentally turned on the phone when i was using the s3 phone kit (which was pretty useless imo). Could this have played a role?
Any help is appreciated.
Since the digitizer and lcd are separate parts, a broken digitizer should not cause a blank screen. I have replaced the digitizer on a couple of Samsung phones and the lcd always displayed an image but would not respond to any touches.
Is it possible the lcd is defective?
audit13 said:
Since the digitizer and lcd are separate parts, a broken digitizer should not cause a blank screen. I have replaced the digitizer on a couple of Samsung phones and the lcd always displayed an image but would not respond to any touches.
Is it possible the lcd is defective?
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Sorry for the late response, I was just able to check the forums recently. The lcd was brand new. How would I be able to tell if it would be defective or not? I'll post pictures if necessary.
C0ax said:
Sorry for the late response, I was just able to check the forums recently. The lcd was brand new. How would I be able to tell if it would be defective or not? I'll post pictures if necessary.
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If you can see an image on the screen, the LCD is not defective. If you can see an image but it doesn't respond to touches, the digitizer could be defective, the phone's motherboard is defective, there is a bad connection between the digitizer and motherboard, or all three.
audit13 said:
If you can see an image on the screen, the LCD is not defective. If you can see an image but it doesn't respond to touches, the digitizer could be defective, the phone's motherboard is defective, there is a bad connection between the digitizer and motherboard, or all three.
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Does that mean, that I need to buy another screen and test it out? I can't really test out the other parts you were talking about because, the screen does not display any image at all.
Since you can't see an image, it could be the LCD. Is there a repair shop where you could askl them to test your LCD?
audit13 said:
Since you can't see an image, it could be the LCD. Is there a repair shop where you could askl them to test your LCD?
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I think there is one nearby. Would I need to pay for it to be tested? I don't know if it's still worth getting my S3 fixed because my relative is going to give his note 3 to me since the S5 is supposed to be revealed soon.
I would double and triple check that all ribbon cables and connectors are 100% properly attached / connected before replacing anything else....
sewermike said:
I would double and triple check that all ribbon cables and connectors are 100% properly attached / connected before replacing anything else....
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I only replaced the screen and didn't touch anything else. I used the tutorials on youtube for guidance, but sadly it didn't work the way i hoped.
Related
After dropping my desire the screen had an obvious crack (no crack in the glass/digitiser) and displayed crazy colours from the crack, spreading across the screen over the course of the day until finally going completely blank.
Bought a new screen on ebay, same part number, same samsung AMOLED. Replaced today and the phone exhibits exactly the same behaviour. Switches on, digitiser works to the extent I can unlock and lock the phone, but screen is constant black. After a few switch on/offs the screen showed two green lines at the top and about half way down upon unlocking, that went away after another lock and unlock.
Pretty confident that the disassemble/assemble went ok and I didnt stress any flex connectors or similar... so have no idea what could still be wrong....
As I say, phone boots and can unlock/lock (makes the right noises etc) and is recognised by computer when plugged in.
Could using the phone until the screen completely stopped working have broken the controller or something?
Any input greatly appreciated.....
EDIT:
Just switched it on again, green line at top from keyboard lighting point, then the whole screen went blue on unlock. :S
This sound like a dying something, or maybe just bad contacts? Find it strange that unlocking has an effect....
Might be a bad connection or little shortcut?
Here is an official video on how to assemble and disassemble the device, http://forum.xda-developers.com/showthread.php?t=768535. Don't know if that helps but you can check if you did something wrong in the progress.
"..Bought a new screen on ebay.." Do not buy Chinese, buy the original.
ronijs19 said:
"..Bought a new screen on ebay.." Do not buy Chinese, buy the original.
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Seeing as the part was shipped from my country and had the exact same markings and serial numbers as the part I removed, I dont think this is the issue.
Thanks for the video, will disassemble and clean all contacts later today.
Was mainly posting to see if people had heard of/experienced the same issue, trying to ascertain whether it could be a faulty replacement or if its possible to break the hardware that runs the screen.
A good fake can be hard to tell apart from an OEM part...
So the consensus is that its a fake replacement? Really? The screen seems identical in all markings and connectors, my only conclusion can be it came from the same factory. What market would there be in producing defective replicas of mobile phone components?
Anyway I have sent the screen back to the seller for a replacement.
Any response to my other questions? Is it possible to damage the hardware that drives the screen by using the phone with a dying screen to the point of blank display?
Reading through another thread: http://forum.xda-developers.com/showthread.php?t=933866
Post #6 suggests the rom on the phone could have an effect, is this the case?
Thanks for any input.
Rom couldn't be the issue if you've installed the exact same screen.
My guess would be a loose connector.
Sent from my HTC Desire using XDA Premium App
My desire lives!
Replacement screen worked just fine....
Thanks for everyones responses!
Can you post the link to the seller on ebay, from whom you bought the display?
Hi, I am kinda new to this forum and although I tried to find answer first, I didn't find any.
So today I tried to replace LCD screen on my broken Evo 4G (Sprint) and after many tries when I thought that screen doesnt fit I noticed that the metal casing inside isn't native part so I took it out too. Then the new screen fit very correctly. However, when I turned it on, colorful stripes and faulty pixels appeared and I think now, that I may broke the screen somewhere, although I dont see any cracks visually.
Can the experienced ones of you give me an advice if the screen is broken or what may be wrong? I attach the picture of screen when the phone is on.
Thank you in advance
andreasovo said:
Hi, I am kinda new to this forum and although I tried to find answer first, I didn't find any.
So today I tried to replace LCD screen on my broken Evo 4G (Sprint) and after many tries when I thought that screen doesnt fit I noticed that the metal casing inside isn't native part so I took it out too. Then the new screen fit very correctly. However, when I turned it on, colorful stripes and faulty pixels appeared and I think now, that I may broke the screen somewhere, although I dont see any cracks visually.
Can the experienced ones of you give me an advice if the screen is broken or what may be wrong? I attach the picture of screen when the phone is on.
Thank you in advance
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Click to collapse
did you connect it correctly? it looks like you might have damaged the connections, it happens if you didnt lift the little locks up and tried pulling it out
*sorry for the poor vocabulary, i replace screen all the times just not sure what the proper names for the parts are*
I understand what you mean. Does it mean for me that is useless to buy new screen as it would have the same issue or new one sould solve it? I mean if problem is the flex cable or pins on board?
Andreasovo
Sent from my GT-I9100 using xda app-developers app
andreasovo said:
I understand what you mean. Does it mean for me that is useless to buy new screen as it would have the same issue or new one sould solve it? I mean if problem is the flex cable or pins on board?
Andreasovo
Sent from my GT-I9100 using xda app-developers app
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well if it is the flex cable it, then ordering another screen would solve the problem. but if it is the pins then ordering another one would be pointless. theres also a chance the lcd might be faulty. All the LCDs and digitizers that i buy i get them from Amazon :good: and so far all have worked perfectly.
Sounds like damaged pins on board from not releasing the pin cable latches before removing the cable from the board, in which case the phone is fubar and the only way to repair it is to replace the logic board or the device itself
We are legion, for we are many.
Sent from the DarkSide of the GalaXy with a MEK device
-EViL-KoNCEPTz- said:
Sounds like damaged pins on board from not releasing the pin cable latches before removing the cable from the board, in which case the phone is fubar and the only way to repair it is to replace the logic board or the device itself
We are legion, for we are many.
Sent from the DarkSide of the GalaXy with a MEK device
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I dont see a way how I can recognize damaged pins as from my view it looks they are OK, but if they are easily damaged from inside, then it might be so. I will possibly try to get new screen cause I might use too much force when putting the last one into it.
Or any other guess?
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
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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
A friend of mine has a problem with his screen, see pics, it very strange and its somehow related to the SoM not the screen - I ve swapped the SoM for the one in my unit and the problem is cured on his unit but mine has it, I swapped them back and mine is fine but his has this problem.
It was on 5.1.1. and I ve tried several versions of 5.1.1. and several versions of 4.4.4. but I always get the same problem.
Any suggestions ?
Have I found the cause I wonder ? In the attached pic you can see a splodge of solder on what I m going to guess is the video output controller or something.
typos1 said:
Have I found the cause I wonder ? In the attached pic you can see a splodge of solder on what I m going to guess is the video output controller or something.
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Who would carelessly drip solder into the unit? if it were to drip somewhere vital it would have fried or fry your car wires, even worse catch on fire.
alukarulz said:
Who would carelessly drip solder into the unit? if it were to drip somewhere vital it would have fried or fry your car wires, even worse catch on fire.
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Theres no solder anywhere else and I dont think it dripped past the lid and the DVD player leaving no trace, I think someone was working on it for some reason or maybe bad quality control at the factory.
Did removing the solder splash resolve the issue?
marchnz said:
Did removing the solder splash resolve the issue?
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Click to collapse
Not done it yet, gonna try later . . .
I am interested too I've got the exact same problem. Pumpkin send me a new screen even though I've got no warranty anymore and the problem disappeared. Sadly this new screen is without a flex cable for the touchscreen so commands were not possible.
Draiden said:
I am interested too I've got the exact same problem. Pumpkin send me a new screen even though I've got no warranty anymore and the problem disappeared. Sadly this new screen is without a flex cable for the touchscreen so commands were not possible.
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Yes, but the problem on my friend's unit is not screen related.
Why cant you use the cable from your old screen ?
typos1 said:
Yes, but the problem on my friend's unit is not screen related.
Why cant you use the cable from your old screen ?
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Okay but screen issues are exactly the same.
The new screen has only one flex cable it's working but touch commands are not recognised. And the old screen has two flex cables.
Edit: I don't know if the new screen suffers the same problem because I had it running for only one minute and the screen issues are randomly.
marchnz said:
Did removing the solder splash resolve the issue?
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Click to collapse
Yes, it did !!
Half an hour of holding a soldering iron to a piece of copper braid and rubbing them over the solder/components covered in solder sorted it !
I used an iron that isnt quite hot enough to melt the solder used on these devices and it melted the solder splash easily, suggesting it was household solder or solder left by someone after the unit left the factory.
Still it was an excruciating half an hour - I thought all that heat my damage the SoM and maybe possibly remove components.
Draiden said:
Okay but screen issues are exactly the same.
The new screen has only one flex cable it's working but touch commands are not recognised. And the old screen has two flex cables.
Edit: I don't know if the new screen suffers the same problem because I had it running for only one minute and the screen issues are randomly.
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Click to collapse
Your old screen assembly is the screen + touchpanel. That is why there are two flexcables. One for the screen, one for the touchpanel. Your new screen assembly is the screen only.
You would have to move the touchpanel from the old to the new screen. However, that could be very difficult when the touchpanel surface is fully glued to the screen surface. If you're lucky the touchpanel is only attached along the edges. Then you might be able to remove it and stick it to the new screen.
Easiest way is to contact Pumpkin and ask them to send you the full assembly, so screen + attached touchpanel.
Mau2012sim said:
Your old screen assembly is the screen + touchpanel. That is why there are two flexcables. One for the screen, one for the touchpanel. Your new screen assembly is the screen only.
You would have to move the touchpanel from the old to the new screen. However, that could be very difficult when the touchpanel surface is fully glued to the screen surface. If you're lucky the touchpanel is only attached along the edges. Then you might be able to remove it and stick it to the new screen.
Easiest way is to contact Pumpkin and ask them to send you the full assembly, so screen + attached touchpanel.
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Click to collapse
Pumpkin are just sellers, it may be better to contact the factory direct, mighty be cheaper too.
Yes thanks for your answers
Hi!
If you want a bit of background, you can read my previous thread (the third post).
Long story short: I have replaced my screen with a LCD + digitizer assembly, and I have no touch function. It is completely unresponsive, even in recovery, so I guess it is a hardware issue. Here are my questions:
- What else than a flaw in the assembly can it be? Some connector? A separate processing module for touch?
- Does the digitizer have to be glued to the LCD to work? I happen to have a spare digitizer-only, so I thought maybe I could disconnect the digitizer glued to the screen (but not remove it), and connect the spare one I have and test to see if there is some reaction, but given the short cable, it would just be dangling. This is just for test, though, but if you tell me it has to be against the LCD to work, then there's no point...
Cheers!
Fa
I replaced my screen three times (LOL), i had the same issue, ask your seller for a replace, it is a HW issue for sure.
By the way, if you can't ask for a replace try to connect the digitizer and see if it works, but for my experience, unglue the digitizer and then replace it with the one you have is a "fool" thing, you can't do it with your hairdryer, you need a specific HW