Swapped screen. SD card and right side of touch not working - G2 and Desire Z Q&A, Help & Troubleshooting

Hello, I recently bought a Desire Z with a broken screen from a kid. I swapped the screen and it turns on nicely, however:
It doesn't read any SD card, at all. Could this be a loose ribbon cable?
The outermost right part of the screen doesn't react at all, maybe half a cm. Broken digitizer?
Any experience and/or knowledge on this is deeply appreciated.

Just a quick update if somebody comes over this via Google.
I took it apart once again and double checked all the ribbon cables and such, seeing that these can be a *****. It now reads SD card, but the screen still acts the same, so the digitizer is most likely broken.

Related

Touch screen stopped working

it just stopped working just like that...then i reflashed it n im stuck in the first screen where it says "tap to start" n i cant even tap now...anyone has any idea of how i can fix it at home...cuz its a lot of hassle to send it abroad...thank u
touch screen replacement
I had the same problem on my Universal and opened it to find out what happened.
I found the cable connecting the LCD and touch screen completely twisted.
Someone has played with it turning the screen in the same direction for many times without unscrewing it every time.
I manged to fix it partially soldering some wires that had gone loose.
Some wires were impossible to handle so I need a new wiring cable (it's a bunch of single ultra-tiny wires).
Now screen, mike and headpiece work again, but not the touch screen.
Do you have any idea if such a spare part can be found anywhere?
Possibly that would solve also your problem.
Who can have spare-parts?
Mario
Hmm....
Actually, not only the flex cable is originally twisted and looks funny out of the factory, you cannot turn the screen in the same direction more than it should be turned (e.g. from opened clamshell it only goes 180 degrees clockwise and cannot be turned anti-clockwise other than returning into its original position), it is stopped from turning by the way the hinge is designed. It is done specifically to prevent just the thing you described.
Generally even when some wires detach, the cable still performs fine, as the wires are not isolated and bunched together, as long as they do not detach from the connector itself. The fraying can happen when the flex cable is reinserted into the main case too roughly or one time too many, as the opening is fairly small and both cables need to be bent a certain way to fit through and pulled through in a particular sequence. Your problem could be caused by a faulty digitizer, it is connected to an LCD and if LCD performs fine, yet you lost sensitivity, the problem is not with your flex cable.
Cables can be purchased on Ebay. And so can digitizers (they are around $17-$20, but you need soldering to get them fitted to your LCD).

Missing Ribbon/Flex Cable?

Ok so long story short, I dropped my phone, bought a new digitizer and front bezel/housing, and replaced the 2. Now when I was putting it all back together I noticed that it was missing the ribbon cable that attaches right next to the trackpad. I double checked EVERYTHING and did not see this cable anywhere. It is the cable that makes the front speaker work and the touch sensitive buttons light up.
Was there something I missed, did I not buy everything? Every place I went to and video I watched said nothing about having to buy an extra ribbon cable. It's not a crazy nuisance, but I would really like to have the whole phone working how it is supposed to, it's annoying to always have to have it on speaker phone.

[Q] Undetected/Unrecognized Sim Card

My Samsung Galaxy S II (SGH-T989) phone will not detect my sim card. This started happening after I opened up the phone and nearly broke it trying to remove the "motherboard"? I know I caused it, but the problem is I don't know what it is I have to replace in order to fix it.
Below are some photos that could possibly help. The first photo, the part highlighted by the yellow circle, that part was bent off when i tried removing the board. Don't know if that would affect the sim card or not
The next photo, this cable I'm not absolutely sure what its purpose is for. This is not the original cable, the original cable was broken off somehow so i bought a different cable off ebay. Not sure how this affects the phone.
It could be the sim card and memory card part entirely except its hooked in fine and I have no other reason for it to stop working.
I don't mind buying parts except there's not much for sale. The only parts for sale ANYWHERE is the sim card and memory part and the usb port.
So my question I guess would be what exactly could be causing this sim card issue considering the actions I've taken with opening my phone?
If you're not familiar with what error I speak of, it's when instead of the bars you see a BLOCKED icon.
Any help would be great, thank you.

[Q] What is the purpose of the front camera flex cable?

Recently, I disassembled my Sony Ericsson Xperia Play R800at. I was replacing the housing and digitizer. All went smoothly until I missed an important step. There was a black tab that holds down the flex cable that connects to the digitizer. I forgot that step and my flex cable ripped.I have ordered another as a replacement. I understand that this will cause the digitizer to not work, but I have more issues, and I want to know if they are due to the missing cable.(the ripped flex cable.) I assembled the phone and the screen functions normally. As to be expected, I can't interact with the screen. However, Now my search button and settings buttons aren't functioning. My home and back buttons are working although. Also, My phone will not charge anymore. Is this due to the missing flex cable? I hope I didn't accidentally screw anything up. I was really careful, so I don't know why they won't function. I really hope that these issues are due to the missing cable. :silly:
Sorry, I am not allowed to post links.It has the camera and earpiece on it and is attached to the slider. :"(
How. Could u miss a step itsm really easy to take apart and put together its the flex cable garunteed
Sent from my Sony Tablet S using xda app-developers app
Tutorials
Most of the tutorials seem to be only of disassembly. Little to none are of reassembly. I wrote down a list and reversed the order, but as it got closer to assembly, I started to assemble it myself. Big mistake. I assumed the black tab was only there to hide the chips.
Charge Recognition
It actually can charge, but only when the phone is powered of. This must be due to the missing components. Maybe because some parts of the phone aren't connected, the phone will not recognize the charger when powered on. What a relief...:angel:
Just watch dissassembly in reverse
Sent from my Sony Tablet S using xda app-developers app
I got the replacement part. I even replaced the slider. I transferred the button cable to the new slider along with the main flex cable and the camera/earpiece flex cable. I am confused. I am inserting the flex cable into the digitizer slot, but it isn't working. I assumed there was a lock mechanism of some sort, but still no luck. I am not sure why it isn't going all the way in. Reversing the steps just isn't working. Placing the flex cable in is way harder than taking it out. Is there a certain way to place this cable in. What I am in need of is a picture of how a functioning digitizer's attachments look. Are you supposed to be able to see the golden tip of the flex cable?(Again, I am speaking of the flex cable with the black tab covering it. It is very small.)
:crying:
Lock.
There were locks for just aboul all the ZIF Connectors. Sony Ericsson's manual is the best!:good:
I tried again using the locks on the slots but it still wont work. Even with the manual, no luck... Now, it is charging normally, even while on. This indicates that something has changed. I wonder why the digitizer isn't working though. Maybe I should see what happens If I revert back to my old digitizer...

Screen not responding inc. capacitive buttons after flat cable replacement.

Hi all,
I just replaced the flat cable of the phone, the one that connects the two phones parts together. The phone was having issues with the display when going to landscape-mode and the mic stopped working recently so I replaced it following this guide:
Anyway the display problem is solved by replacing the faulty flat cable but only a new problem occured.. The screen does not respond including the capacative buttons and the big scroll button, its looks like the whole display unit with all its buttons is not working. Any suggestions? I will be taking it apart again and check if all cables are well suited but besides that someone might recognizes the problem
Thanks in advance!
Could be bad connections, the new cable you put in could be bad or by coincedence the digitizer went
Sent from my HTC Vision using xda premium

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