I replaced the LCD screen in my Nexus 7 today, and the attached photo is the result. I have read around a little bit, but cannot determine if I received a bad LCD screen, or if perhaps I damaged the ribbon cable. I have replaced LCD's in several devices, but this is the first time anything's gone wrong. Is there any way to tell what happened?
PS - I realize there was a previous thread about something quite similar to this, but I did not feel it really addressed the possibility that the screen is bad... I had re-seated the ribbon just to be sure it was on right, so I am fairly certain there is a bad part. I just don't want to go ordering more parts before the problem is properly diagnosed.
Thanks everyone!
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Ok this one goes out to all you cool smart guys out there. I currently have two mt4g's. One is working perfectly fine with the "bad screen", as they call it, and the other is bricked, or no it has a failed pu is what someone told me, but it has the "good screen".
Anyway while just minding my own business on the internet one day I came across a video which shows you how to replace a lcd screen in a mytouch 4G! I was hooked. I could do this I said, it looked so easy! Sure you need some patience, which I got btw. So I was determined to do this, even ordered the tools from repairsuniverse. So about the fourth time watching the tutorial I began to wonder if it would be possible to just swap motherboards instead of disassembling all the way to the screen. Mostly because I still need a heat gun so i could remove the digitized then lcd screen.
So i guess my question is will swapping motherboards solve the pu problem in the mytouch with the good screen? And while I got you here has anyone ever replaced there lcd screen?? Is it worth it??
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Yes, if you put the good motherboard in the case with good LCD, you'll get one good phone.
Thanks for the response! This will make the job so much easier
repair options
sorry to piggyback you post but i had a similar question....
a friend of mine is giving me their broken mytouch 4g. it was working perfect but then she dropped it on her kitchen tile (bottom right corner hit i'm told) and now it will not turn on at all.....no cracks or anything, just a scratch in the corner. she says she tried a new battery and tried plugging into AC but no lights, nothing.
i've taken apart enough phones so once I get it i'm not afraid to do some swapping of parts.
my question is, those of you who have worked on this model, any indication where you think would be the problem? i'm hoping the lcd/digitizer is fine since its not cracked but we'll see....and i figured maybe i would just need to do a motherboard swap worst case? is there any other components you think could be shot after the drop? from what i've been able to find its just the 1 main mother board , correct? (meaning there is not 2 parts)
thought MAYBE i'll get lucky after opening it up, and verifying all the cables that possible some cables got jarred loose and thats why it wont respond but not holding my breathe on that.
thanks for the help!
Hi all out there,
My xoom has no backlight? in some angle I'm able to see what's on my home screen, but it's all dark, totally unable to work around...
Someone know something about that? You guys around here are my only help. I have no warranty, cause I bought it from US and I'm i Europe....
Greets,
Philip
Interesting, this person here have the same issue http://forum.xda-developers.com/showthread.php?t=1767082
Hmm I still don't think it's a software sided issue but a hardware issue. You could open your XOOM and if there is anything wrong with the connectors, but you will properly have to replace the whole LCD screen. I had a few LCD TV fail on me before and it's generally the back-light that goes first, so it's not that surprising. Hmm another problem is I looked on ebay over here and a new LCD screen or touch digitizer actually costs more than what it's worth.
Greetings,
I tried to search for this problem on this forum but I couldn't find anything specific to this device.
The tablet works fine in all aspects, except the screen flickers when the aluminum back is stressed, i.e. when its being held. The tablet screen will flicker in brightness as the back is pressed.
Usually the most reliable way to reproduce the problem is to flex the tablet, as if you were trying to split a piece of plastic into two by gradually flexing it until it breaks.
Therefore, I have concluded it is a hardware problem, but I don't know exactly what.
I apologize if I'm difficult to understand, and if you need any clarification, let me know.
Thank you everyone for your time.
-Kevin
ktong747 said:
Greetings,
I tried to search for this problem on this forum but I couldn't find anything specific to this device.
The tablet works fine in all aspects, except the screen flickers when the aluminum back is stressed, i.e. when its being held. The tablet screen will flicker in brightness as the back is pressed.
Usually the most reliable way to reproduce the problem is to flex the tablet, as if you were trying to split a piece of plastic into two by gradually flexing it until it breaks.
Therefore, I have concluded it is a hardware problem, but I don't know exactly what.
I apologize if I'm difficult to understand, and if you need any clarification, let me know.
Thank you everyone for your time.
-Kevin
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Hey Kevin,
Yeah, seems like a hardware issue. But I advise not to "flex" the back too much
Probably could be 2 things.
1. Loose connector for the digitizer
2. Bad digitizer
3. Something grounding out against the case.
So my guess would be to spit the case apart. You can find videos on Google Search showing the procedure at You Tube. Then a good inspection of components, paying attention to connectors and the boards (for cracking).
I saw the other day that there are plenty of parts available for the 500, like digitizers, display glass and several other items. Check E-bay.
MD
Moscow Desire said:
Hey Kevin,
Yeah, seems like a hardware issue. But I advise not to "flex" the back too much
Probably could be 2 things.
1. Loose connector for the digitizer
2. Bad digitizer
3. Something grounding out against the case.
So my guess would be to spit the case apart. You can find videos on Google Search showing the procedure at You Tube. Then a good inspection of components, paying attention to connectors and the boards (for cracking).
I saw the other day that there are plenty of parts available for the 500, like digitizers, display glass and several other items. Check E-bay.
MD
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Thanks for your advice Moscow Desire. I've taken the back off before but noticed nothing unusual. Should I just take every component that can be separated out and inspect it? Sounds like a recipe for disaster for an inexperienced person like me.
ktong747 said:
Thanks for your advice Moscow Desire. I've taken the back off before but noticed nothing unusual. Should I just take every component that can be separated out and inspect it? Sounds like a recipe for disaster for an inexperienced person like me.
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Hi Moscow Desire,
I have taken my tablet apart with the instruction from the videos but I didn't see anything that is loosen so far. Do you think I will need to unscrew everything until I take out the screen to know what's wrong? My screen keeps flickering with white lines at the edge of the screen and it's really annoying. :crying:
Thanks!
Hello, thanks for reading, i bought a refurbished D800 and when i touch the screen i get like some blueish pixels, if i softly touch it no weird stuff appears on the screen. Is it the digitalizer or the LCD panel? does anybody know?, the pictures are attached. Thanks for reading!
Edit: exact same thing happening to this guy (check the video), even tho mine is much more subtle on the spots: http://forum.xda-developers.com/lg-g2/help/screen-weird-spots-problem-t2907316
My brother had the exact same problem with his D802 and in his case it was the battery which was getting bigger and bitter since it was defect. After replacing the battery, the problem was gone.
Since you bought a refubished phone, I think it could also be a wrong digitizer or LCD which got assemled.
T.E.C.H.N.O said:
My brother had the exact same problem with his D802 and in his case it was the battery which was getting bigger and bitter since it was defect. After replacing the battery, the problem was gone.
Since you bought a refubished phone, I think it could also be a wrong digitizer or LCD which got assemled.
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Now that you say about the battery getting bigger and bigger, i noticed that the glass isnt where it should be, its pushed up, if i leave the screen on in complete darkness i can see the backlight filtering trough the cellphone's borders. Im gonna take it to a local shop to see whats wrong with it. Thanks for replying!!
xRaevyn said:
Now that you say about the battery getting bigger and bigger, i noticed that the glass isnt where it should be, its pushed up, if i leave the screen on in complete darkness i can see the backlight filtering trough the cellphone's borders. Im gonna take it to a local shop to see whats wrong with it. Thanks for replying!!
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I forgot to mention that in my brother case the glass was also pushed up. So pressing my thumbs for you, that it wont be that expensive
Defective battery bro!
See my post in your other thread here
Hi all, was replacing my cracked screen and managed to graze some of the resistors on the motherboard and its possible one was unseated.
New screen and old screen both turn on but the touch does not register. I think I need a new motherboard.
Does anyone know where to get motherboard parts? Does anyone have one for sale as i would love to put this thing back together!
A more likely culprit is that the digitizer wasn't plugged back in properly . I would suggest that you take the phone apart again and make sure all of the connections are seated properly.
I've had a phone with motherboard issues and they generally completely stop working (black screen, no boot, etc). That's why I really don't think the touch screen issue is a result of a loose component on the mother board. That being said, if you really feel like it is a loose connection on the mother board, you can try baking the board in an oven to soften the solder joints which allows them to re-adhere when they cool down. Yes, it can actually work. Take the phone apart and stick just the motherboard (don't put the case, screen, battery, etc in the oven) in an oven at 400 degrees for about 10 minutes. I've always rested the motherboard on top of two wooden spoons that were sitting on a cookie sheet. This keeps the motherboard off the hot metal surface and allows the hot air to get to all parts of the mother board. Remove the motherboard and let it cool down before installing the board.
Thanks Sic for the reply. You made me not give up hope. I will try again and bake some mobo.
But which wire is the actual digitizer. Is it the one on the far right?
The rest seem to attach to bumpers or usbc charger. Thanks again for reply.
Attached 2 photos. 1 is my mobo with red circles around what i think was damaged. I think this is the only connection to the screen digitizer in the phone.
The second is from IFIXIT mobo. it looks a bit different, possibly different revision but showing the same angle. Digitizer connection on top.
Could one of those circles connections cause the digitizer to not pick up finger contact but the screen works perfectly?
Looking at the two pictures, I could be easily convinced that there isn't suppose to my any components where you have your red circles. If you look at the IFIXIT picture, there are three components, then a break, then 6 more components and another break. You red circles seem to correspond with the breaks in the IFIXIT image, although it is clear that the motherboard isn't identical in the two images. Just my two cents.
sic0048 said:
Looking at the two pictures, I could be easily convinced that there isn't suppose to my any components where you have your red circles. If you look at the IFIXIT picture, there are three components, then a break, then 6 more components and another break. You red circles seem to correspond with the breaks in the IFIXIT image, although it is clear that the motherboard isn't identical in the two images. Just my two cents.
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Thanks for the reply.
Well, back to using my Pickle 3 which is still great and my Pixel 4 cupcakes are about ready. Let me check the oven.
Any update? I'm curious to know if baking the motherboard helped at all.
sic0048 said:
Any update? I'm curious to know if baking the motherboard helped at all.
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Update. Phone no longer boots after reinstalling everything.
I pre-heated to 200c ~ 400f and let it sit for 10 minutes and cool before reinstalling all the components. Was a final attempt I know.
ridethasky said:
Update. Phone no longer boots after reinstalling everything.
I pre-heated to 200c ~ 400f and let it sit for 10 minutes and cool before reinstalling all the components. Was a final attempt I know.
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That's too bad. I'm not all that surprised it didn't help, but I am surprised it actually made the problem worse.
Perhaps one of the components was loose and baking it made the connection fail completely. As I noted before, motherboard issues generally result in a no boot situation.
Baking it was a last ditch effort to try to get it to work, but don't feel like you have to quit now. You can try baking it again - perhaps for slightly longer this time. You have nothing to loose and perhaps it will cause a bad connection to re-solidify. Sorry I can't be of more help.
Hello I am sorry that your phone is not working. I was wondering if you do find a new board if you wanted to sell me your old mother board. I want to try a project of replacing the ram chip with a 16gb chip but to do so I need a old board.
Hello, I have the same problem, my pixel 4 XL got wet (I know, it was stupid) it reaches a depth of 2 meters, I opened it to myself if I could save it and it was completely rusty. and several transistors and chips came out. So I decided to look for a motherboard to repair it. anyone know where i can get the replacement? :crying: :crying: :crying:
ridethasky said:
Does anyone have one for sale as i would love to put this thing back together!
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