I need some help all, a year ago I bought an evo with a cracked screen and somehow when I took apart the evo I chipped a small micro chip that is on the board. I think its a chip. anyways. in the picture you will see i've showed that chip with a big Yellow arrow. After putting on the new screen the phone just boots to the lock screen and is not responsive to touch. After 10 seconds or so it just reboots and does this over and over until I pull the battery. Does anyone know what that little micro chip does? Could it be replaced? is it the reason the phone is not responding to touch and boot loops? Any help is greatly appreciated.
So nobody here knows if this chip is why my evo is in a boot loop after it turns on?
even if you could find that chip, it's very unlikely you or anyone else would actually be able to replace it.
If you managed to damage that chip during a screen replacement, you have essentially broken the chain of data through the board. Your best bet would be to find a broken EVO on ebay or something to get the chip from a board. However like the previous poster said. Good luck replacing it.
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.
Click to expand...
Click to collapse
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 just bought a replacement digitizer from ebay, I first have to say that this will be my first replacement, so maybe I missed a step. So after I replaced screen, I connected the 3 connectors like they should, I screwed the one screw on the top right, and screwed the 6 t-4 screw. I turned on the phone, and it seems like it wont register touch. It also seems that its more responsive to touch when plugged to the wall. I was able to get to the calibrate touch screen, I was finished with that and still no response. So now my question is...
A) Did i miss a step?
B) Is this something common and can be fixed with settings?
C) Does this sound like a bad digitizer?
I emailed the company that sold me this digitizer, and they will exchange my digitizer. But before I ship it back I would like to know if it was me who is doing something wrong, or if its the digitizer.
ps. Not sure if I can post the link to the ebay item...
A customer brought her G2 on simple mobile to me with this problem: The letter "A" wont work on portrait mode nor will the home key. I figured it was the digitizer so I replaced that with an OEM Replacement part and as soon as we booted back up the problem was still there. Could it be her OS is corrupt or possibly a warp in the case thats keeping the plate from contacting the faceplate. I'm rather stumped as I ran a logcat and I saw nothing out of the ordinary during normal input. Any help is appreciated.
Touch plate? I am confused to what you mean by this. I am not too familiar with the electronic construction of a digitizer so any info would be helpful.
The digitizer isn't coming in contact with the face plate I believe. (Sorry I used like three different words to describe the same thing in my previous post) Any tips on how to fix that would be great. I saw a video on youtube that stated a part where a heat gun would be used but I never came across a front panel (The part with "T-mobile" on it so I installed the digitizer and went along). I think I may have messed up.
i have the same problem, i dropped the phone, and the touch screen was broken, i replaced it but now the left side and home button arent worksing
ps the broken screen worked still also on the left side , did you find a solution ?
I have the same problem.
I believe it's the ribbon cable, not the Digitizer. The ribbon cables on this phone hangs between both screens and is fairly exposed at times.
I still have a couple weeks in my warranty to return it to HTC, but I can't get it to S-on. Unless I get S-on before warranty is up, I'm going to have to replace it myself.
Ribbon cables for this phone cost ~$30 on ebay. tell me if you fix it.
Any luck with this, anyone?
I've seen a Note 8 - badly damaged digitizer for sale (on internet so can't physically check it out) and am considering picking it to have a tinker and see if I can repair it - I'm just getting back into electronic gizmos after a bit of time out.
The digitizer is completely smashed - but that doesn't look it's too hard to replace.
The LCD flickers on and then the device powers down - does this mean it is likely gone too? Or is this likely to be a damaged digitizer preventing it from operating. If it is the LCD, then realise that is extra cost, but would still be ok.
The device charges and turns on (but LCD flickers on and off) - is it possible to run a diagnotics test to see what else might be damaged or that everything else runs ok?
Thanks for advice in advance.
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