No picture showing - touch is perfect and backlight works sometimes - Zuk Z1 Q&A, Help & Troubleshooting

Hi all,
It was a few months ago when I fell off my bike to the ground on the side where I had my Z1 in my pocket. It was in a rugged case and the display was facing my body (no direct shock with a solid surface). Since then, my display doesn't show any picture. The touch function works very well and the display is not broken. Also the backlight works sometimes.
What can be a problem here and how can I solve it?
Is it possible to solve this problem without changing the display?
Or if changing the display is the only solution, is there a video to make sure that I can reassemble the mobile well again as the videos available now are for disassembly only?
Thank you very much in advance,
Riko

riko2017 said:
Hi all,
It was a few months ago when I fell off my bike to the ground on the side where I had my Z1 in my pocket. It was in a rugged case and the display was facing my body (no direct shock with a solid surface). Since then, my display doesn't show any picture. The touch function works very well and the display is not broken. Also the backlight works sometimes.
What can be a problem here and how can I solve it?
Is it possible to solve this problem without changing the display?
Or if changing the display is the only solution, is there a video to make sure that I can reassemble the mobile well again as the videos available now are for disassembly only?
Thank you very much in advance,
Riko
Click to expand...
Click to collapse
Search on YouTube, there are vids from disassembling. Maybe reseat the display connector can solve the problem.

Related

Wizard Display broken?

Hi guys, I need some help here. I literally threw my wizard out of the window shaking out my bedsheets and it dropped three stories into the backyard.
When I turned it on again (the drop had opened the battery case), at first the screen was bright white, then turned darker and darker showing some sort of noisy stripes (static, not moving). When it goes into standby and is turned on again from there it does the same thing.
some facts:
- there is no visible crack in the display (neither from the side, I disassembled it)
- all buttons and the touchscreen are still responding (u can see that because the background lighting responds to them)
- the wizard is still accessible via usb
- I don't know whether the phone still works because I can't enter the pin w/o display.
It seems strange to me that the display should stop working while the touchscreen and the background lighting remain unhurt. I am thinking about replacing the display (only available together w/ the touchscreen and bg-lighting), but I am afraid that it might rather be a problem with the communication between the main unit and the display, even though there was no visible damage there.
Does anybody have experiences with that kind of behavior of the display?
Is the display that vulnerable that it breaks before the rest (light, touchscreen)?
I didn't find any cases similar to mine in the forum. If there are and my questions would be answered there, please direct me there.
Thanks for the help
ff
Try taking it apart, the force of inpact could have made a connection loose.
Disassembling I disconnected everything possible. Next thing would be to take apart the display/bglight/tscreen.
did you mean that? looks pretty fragile to me...
thx
yeah, I wouldnt mess with the display .. lol .. I meant a connection somewhere inside the device... like a loose ribbon or something
Yeah, seems hopeless. Guess I'll have to buy a new display and hope it works :-(
I'll post again once I got some results...
Problem solved
For the archive:
I exchanged the display and apparently only the screen was broken and the rest was unharmed.
I'd also like to add that two days ago (1 week after I repaired the thing) I dropped a plastic bottle on the phone in such a stupid angle that it broke the touchscreen. the next thing I will report here is whether it is possible to exchange the touchscreen only by doing some soldering.
a/t

Problem with proximity sensor

The problem is that the screen will stay off during calls. That means I can't hang up...
The only way to get the screen on is bright light against the sensor.
Is there any way to calibrate the sensor?
I don't think so. But as you say, it's a proximity sensor, so it should measure a distance and not need light to wake the screen. And as far as I know, the light sensor isn't used in calls.
But you could use the key under the screen to hang up
Yes, that's pretty weird actually, but that's how it is...
But no, I can't hang up since there are no hard buttons. Only the touch-sensetive ones, and they don't work when the phone thinks it's at someones ear.
Screen protector and proximity sensor
I have installed on my HD Mini a very good quality screen protector. During phone call my screen became black like my ear is on the phone, but my phone is on the desk ! If I remove the screen protector the proximity sensor come back to work correctly. Any idea how to set-up or adjust proximity sensor sensitivity ?
Me too!
I have this problem too!
Your phones have a screen which is made of really good strong glass. Using a screen protector is useless. I have had a Hero (also a capacitive touchscreen phone) for 6 months and, while I do keep it in a holster, I have rubbed it on my shirt, dropped it and used my finger on it all day long. It still is spotless. Stop wasting money on protectors and just use the phone. And having a protector is bound to screw up the proximity sensor.
As far as it not recognizing that the phone is not against your ear.... that is a matter for the service department to solve since it seems like a hardware fault.
Really strange! I've a screen protector but don't have this problem... the sensor works fine!!!
bellor
It's made out of plastic, really easy to make scratch. And it's very fingerprint attractive. So glossy filter is really good solution.
BeemerZ1
Same problem, proximity sensor work really weird.
Hi guys, I have the same problem on my HTC HD Mini, when you make a call the screen goes black and will not allow to end call. I have to take battery out to make it work again. I was looking at the registry tweaks for HTC HD2 (leo) and am wondering if those tweaks will work on my mini.
Please, if anyone has a solution, put it on here, have even tried replacing the glass to resolve but not working still.
Same problem. I tried an experiment... when i'm in a light room, works. when i'm in a dark room doesn't work. Really stupid... without light doesn't work!!
If you would, try to put the mini under light when is in calling...
In fact, that's quite normal. If you're calling in a dark room, how do you expect that your phone can "see" the difference between the darkness of your ears and the darkness of the room?
Are you using a screen protector?
I used to have the same issue. But once I remove the screen protector the screen turns back on straight after a phone call.
I believe that the proximity sensor is confused and is affected by having an object pasted over it.
so if someone could experiment with just removing he corner of the screen protector to avoid the sensor, you will not have a issue.
I am using the mini with a screen protector and it has been fine in my pocket...but I am not saying you should try!
My 2 cents!
S-ed said:
bellor
It's made out of plastic, really easy to make scratch. And it's very fingerprint attractive. So glossy filter is really good solution.
Click to expand...
Click to collapse
its made of carbonized whatever mixture just like any other capacitive screen and no theres no way to scratch that thing, iam wearing it in a pocket together with my keys since i bought it and theres no single scratch there, yet the fingerprint thing is very annoying indeed but thats because the material of the screen is very very close to glass.
fongyiktze said:
I used to have the same issue. But once I remove the screen protector the screen turns back on straight after a phone call.
I believe that the proximity sensor is confused and is affected by having an object pasted over it.
so if someone could experiment with just removing he corner of the screen protector to avoid the sensor, you will not have a issue.
I am using the mini with a screen protector and it has been fine in my pocket...but I am not saying you should try!
My 2 cents!
Click to expand...
Click to collapse
The lcd and digitiser have been replaced and there is no screen protector on the device. I purchased the lcd and digitiser as a complete unit so as not to have any issues.
The seller reassures me that the product was brand new and had been fully tested. I no longer have the old pieces to test against but this problem seems quite common from the threads on here and gsm forum.
Any solutions or ideas for resolution greatly appreciated, near to pulling all my hair out!!!!!!!!
I have screen protector and I do not have any problem with sensor. Everything works great..
i have the same problem as you.. when i am in a call i cant end it because my screen is black all the time.the only solution i found is when i call i turn the speaker on.please help us
p.s where on the screen is the proximity sensor??
spithash said:
i have the same problem as you.. when i am in a call i cant end it because my screen is black all the time.the only solution i found is when i call i turn the speaker on.please help us
p.s where on the screen is the proximity sensor??
Click to expand...
Click to collapse
up on right side
_Madmatt said:
In fact, that's quite normal. If you're calling in a dark room, how do you expect that your phone can "see" the difference between the darkness of your ears and the darkness of the room?
Click to expand...
Click to collapse
Yes I know... I meant that only works in bright light conditions, such as directly under a lamp or sunlight. in a room or just the shade does not work. So it's "only"a matter of adjusting the sensitivity of the light sensor. I do not even understand how it can be made this "proximity sensor", all I know is that it works with light. Rather, there is a program like the shake'n wake can use?
I have this annoying problem, too.
But I have to say: I have NO screen protectror, and: the divece was repaired by arvato-Services after a broken display. And I didn't have this problem before!
Sometimes i seems to help to puff serveral times into the loudspeeker, so that the screen returns and I'm able tu hang up the call. But sometimes it doesn't works, and if I had spoken to a mailbox (and the other end didn't hang up, so that i MUST hang up) the last solution was to remove the battery.
If there is a way to disable the sensor (i.e. in the registry)?
kind regards
Ye same thing, Mine will only bring the screen back during a call if it is under a very bright light.
Any ideas yet?

Problems with the screen illumination of HTC Desire Z

Hello, I change the screen to my Z and I have this problem.
I noticed the screen flicker when you touch or press the edges of the screen / phone. It's like if you increase the intensity of light.
The display properly reacts to the pressure of the fingers, sliding screen keyboard ...
What can happen? The screen? I open it?
The 2 Connectors of the screen with the board?
Thanks
are you using auto light? if yes try to disable it
I'm guessing it's an issue with the connections. Are you using too much pressure on the screen? I've never seen that happen on mine.
PazzoPazzini said:
are you using auto light? if yes try to disable it
Click to expand...
Click to collapse
Nooo
shadowx360 said:
I'm guessing it's an issue with the connections. Are you using too much pressure on the screen? I've never seen that happen on mine.
Click to expand...
Click to collapse
I think this is, I will dismantle it and see what happens.
Repair fail !!
Well I'm back to open the Z and I've broken the screen.
I get those lines and a black spot. 25 euros lost.
I hope it's only the screen and the digitizer.
this happened to me now i cant get anything but the lowest brightness
if you have the same as me its not the screen i think its the cable but i cant find a cheap replacement to test it plus i am thinking of going to the droid 4 if/when it gets its gsm update
Did you manage to fix the problem with your Desire Z screen, I had exactly the same problem after replacing the LCD. I took it apart and put it back together again & again but couldn't find what was causing it.
I think when you take the screen out the first time, you remove that clear glue stuff, and probably make it slightly loose. So what I did was take some of them sticky labels for printing. With a scalpel cut some very thin strips (about 2mm in width and almost the full length of each side), folded them into an L shape and stuck them aroud the 3 edges of the LCD, before sinking it into the housing and the problem is fixed.
Just in case I've not explained that very well, here is a really bad diagram.
...John...
http://forum.xda-developers.com/showpost.php?p=28506002&postcount=7
Repared
Merci all

[Q] Proximity Sensor / Autorotation Not working after Screen Replacement

So I dropped my nexus 4 cracking the screen which required me to replace the LCD assembly. After putting it back together and firing it up I noticed that the Auto Rotation (Yes the setting is checked in the settings) and the proximity sensor are not working. I installed Android sensor box and it is getting no reading from the proximity sensor or the gyro sensor. I have taken the phone apart multiple times to ensure everything is connect and everything looks correct. I have also unlocked the phone and have re flashed the stock rom with it not fixing the problem. Any help would be much appreciated.
My wife destroyed her display. Did same but gyro works fine but proxy is the problem. Work around so far is to set power button to end calls becasue screen just goes black when making/receiving calls kind of makes phone useless if you can't see screen.
I too have taken it apart several times and still nothing. Next plan is to find a new sensor unit and replace it.
From what I have been able to see in all my searching the proxy is extremely sensitive any deviation in placement, smuge on unit or display, minor deviation on color of display, screen protector, any interference from skins can affect it so check all those also.
In one of the threads on the Galaxy Nexus there is a patch to turn off sensor and there is mention of app in market that does the same, haven't tried yet have to get phone from wife to try, could be possible solutions also.
Will post back with findings as I get to try them.
Found great app in market Sensor Kinetic Pro shuts off proximity sensor or any other sensor no more problem with black screen after making calls. Still going to try replacing sensor however found it on Amazon less then $5.00.
silvagroup said:
My wife destroyed her display. Did same but gyro works fine but proxy is the problem. Work around so far is to set power button to end calls becasue screen just goes black when making/receiving calls kind of makes phone useless if you can't see screen.
I too have taken it apart several times and still nothing. Next plan is to find a new sensor unit and replace it.
From what I have been able to see in all my searching the proxy is extremely sensitive any deviation in placement, smuge on unit or display, minor deviation on color of display, screen protector, any interference from skins can affect it so check all those also.
In one of the threads on the Galaxy Nexus there is a patch to turn off sensor and there is mention of app in market that does the same, haven't tried yet have to get phone from wife to try, could be possible solutions also.
Will post back with findings as I get to try them.
Found great app in market Sensor Kinetic Pro shuts off proximity sensor or any other sensor no more problem with black screen after making calls. Still going to try replacing sensor however found it on Amazon less then $5.00.
Click to expand...
Click to collapse
Somewhat comforted to see others are also having the same problem... I recently replaced my nexus 4 screen only to have my proximity sensor fail on me too. Interestingly enough, i disassembled my phone multiple times to test if the sensor still works, turns out it does, but it is super sensitive. In my first experiment I had the sensor dangling out of the socket to see if it was still receptive to light, it worked perfectly - I used my hand as a 'face-simulator' to test for sensitivity. I then tried to place it back in the rubber grommet with the grommet seated firmly in the socket and what I found was that it worked, so long as there was only limited pressure on the enclosure. For example, it only works when there are no adjacent screws (for the plastic motherboard cover) applying pressure in the nearby area. I thought I could live with that, but then I tried putting the rear plastic cover back on and,... back to square one, dead screen on-call. I figure it has something to do with either pressure sensitivity or perhaps the pressure from the screws or the rear cover pushes the sensor too close to the glass?
Anyway I'd be keen to see if replacing the audio jack will actually fix the problem, any of you guys had any success with that? Meanwhile i'm going to just use the power button for ending calls. Any tips for how to use the speakerphone during a call?
Cheers fellas.
New sensor arrived yesterday changed out my wife's non functioning sensor and new one working great. Old sensor was bad !!!! She had dropped the phone several times and last accident she unintentionally threw it. Suggest no one do that
Sent from my Amazon Kindle Fire HD using xda premium
silvagroup said:
New sensor arrived yesterday changed out my wife's non functioning sensor and new one working great. Old sensor was bad !!!! She had dropped the phone several times and last accident she unintentionally threw it. Suggest no one do that
Sent from my Amazon Kindle Fire HD using xda premium
Click to expand...
Click to collapse
New sensor arrived the other day, I have since swapped out the old one, everything works great now!
17
dhaub said:
New sensor arrived the other day, I have since swapped out the old one, everything works great now!
Click to expand...
Click to collapse
whered u get the sensor?
chamilun said:
whered u get the sensor?
Click to expand...
Click to collapse
I know this is old but I'm having the same issue. How did you guys make out? Were did you get the sensor? Saw one on ebay $109 seems pricey
btack said:
I know this is old but I'm having the same issue. How did you guys make out? Were did you get the sensor? Saw one on ebay $109 seems pricey
Click to expand...
Click to collapse
I put a case on mine and it started working. It always would work if i put a bit of pressure on different parts of the phone. So im not sure if bad contact on sensor or if more some type of alignment issue. But it does work now. speakerphone is terrible since cracked screen tho..

Proximity sensor issue after screen replacement

Hi all!, I would like to coment this issue and ask if anyone experimented this, my little son smash with a spoon my x compact and cracked the screen, I replaced twice the screen and tested 3 diferents proximity sensors (cable flex) already and still i'm having this issue.
any comments or help will be very appreciated
regards from chile!
I hace the same issue
ramirowski said:
Hi all!, I would like to coment this issue and ask if anyone experimented this, my little son smash with a spoon my x compact and cracked the screen, I replaced twice the screen and tested 3 diferents proximity sensors (cable flex) already and still i'm having this issue.
any comments or help will be very appreciated
regards from chile!
Click to expand...
Click to collapse
i recently replaced the lcd and also have the same issue. It detected that my screen is covered so i can't hang on a call because the screen wont turn on.
but suddenly it works when i cleanup the screen with a damp cloth. but sometimes it doesnt work.
I know this thread is super old, but before I start a new one on exactly this - I had to disassemble my phone to replace the audio jack, and since then, my proximity sensor won't work at all. I double checked the flex cable and plug, tested the sensor outside the phone, still nothing. It ONLY works if I put sth white or metal-like exactly 2 mm away from the screen, no nearer, no further. Its super strange and annoying. Was anybody able to solve this?
Edit: LED and ambient light sensor (which is exactly the same sensor) are working! And before the sensor stopped working I did not even touch it at all!

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