Just replaced the display panel for my ZenFone 2 because the previous on had a horizontal "dead zone" on the screen. It seems to be working fine except that it won't power on at all if the the speaker assembly is in place. Powers on wonderfully if I leave it out, however.
Any ideas?
EDIT: It won't start with the back panel on either. Also, touch screen is unresponsive with SIM card installed.
I may have damaged ribbon housing on the charging port motherboard while trying to detach the ribbon. Could this be causing my problems?
Related
Replaced digitizer and screen (screen was cracked, but responded to touch OK)... The screen doesn't turn on. Bottom buttons turn on. I thought I kinked the LCD screen ribbon so I bought a LCD/digitizer/screen combo. Same problem after installing that. What am I doing wrong? Everything is hooked up properly... Not sure what gives here help!
Did u figure out the problem?
I have a black screen issue that starts with the screen getting dim, then the next day just a black screen with sound and touch feedback.
Taking the back off and reseating the cables fixes this, but it happens every few months.
Will replacing the screen fix this issue or is there something else going on i need to address?
i'm pretty sure it's not the OS. it happened when i had TW and still happens on LOS.
Do not replace the screen
bajra79 said:
I have a black screen issue that starts with the screen getting dim, then the next day just a black screen with sound and touch feedback.
Taking the back off and reseating the cables fixes this, but it happens every few months.
Will replacing the screen fix this issue or is there something else going on i need to address?
i'm pretty sure it's not the OS. it happened when i had TW and still happens on LOS.
Click to expand...
Click to collapse
Don't replace the screen the problem is the ribbon cables. The best solution is to reseat the cables then place a layer of electrical tape to secure the ribbon cables so they do not move when you drop the tablet (accidentally or just setting it down on a surface).
Mike
Maybe you have an idea about this? Very perplexing. My screen started getting darker in one corner. then it blacked out. I had already read about reseating the ribbon cable, but the really weird thing is on a reboot the screen comes back on. It has done this several times. Last time, I thought it had blacked out for good, but nope, it is still coming back on after a reboot. This has happened after several ROM updates. I am at a loss.
Same Problem
C0BRA01 said:
Maybe you have an idea about this? Very perplexing. My screen started getting darker in one corner. then it blacked out. I had already read about reseating the ribbon cable, but the really weird thing is on a reboot the screen comes back on. It has done this several times. Last time, I thought it had blacked out for good, but nope, it is still coming back on after a reboot. This has happened after several ROM updates. I am at a loss.
Click to expand...
Click to collapse
The root cause of the fading in one corner is the same problem...badly seated ribbon cables. My Note 2014 experienced a faded corner too before the backlight stopped turning on when I woke it up from sleep mode. Fix action was the same...remove the black plastic cover, flip it over and carefully remove and replace the ribbon cables to the display. To prevent future problems carefully use a sticky black electrical tape to help hold the ribbon cables in place. Check the function (push the power button to put the tablet tot sleep then wake it up) before you replace the cover. Good luck!
- Mike
Pictures
Mike_SattyEng said:
The root cause of the fading in one corner is the same problem...badly seated ribbon cables. My Note 2014 experienced a faded corner too before the backlight stopped turning on when I woke it up from sleep mode. Fix action was the same...remove the black plastic cover, flip it over and carefully remove and replace the ribbon cables to the display. To prevent future problems carefully use a sticky black electrical tape to help hold the ribbon cables in place. Check the function (push the power button to put the tablet tot sleep then wake it up) before you replace the cover. Good luck!
- Mike
Click to expand...
Click to collapse
For those that are interested...here are so pics of the ribbon cable reseating process. I had to do this again to my P600 after a hard drop to a wood floor to nights ago and found the back lighting not working correctly.
Symptoms: 1. Darker spot in corner of display on wake up from suspend. 2. Pressing power button to wake up after tablet put its self to sleep after the screen timed out (turned off display) resulted in lighting of only the soft return and menu buttons and the display back light failed to turn on resulting in a black screen.
The fix action:
1. Turn tablet off and remove the pen from its built in holder.
2. With screen facing up, use a plastic key card (hotel room key or reward card) to go all the way around plastic-chrome border of the tablet and unlock the back cover from the display.
3. Flip the tablet over and lay it on a soft cloth. Carefully flip up the black locking tabs of the ribbon cables (these things are delicate and are easily broken unless you use minimal force). Only the cable on the left can be completely removed (see the first pic). The lower end of the right cable is attached to the display. Fold it out of the way. Remove the cables and inspect ends for damage or debris. reseat the cable paying attention to the tiny locking tabs of the cables, then lock them back into place.
4. Pick up the tablet. With the screen facing you rotate it until the USB port is facing to your left. On the upper right side of the table you see three round silverish dots. These are membrane switches. Press the upper switch carefully with your finger nail (you fill the switch move and make contact). If the screen turns on, carefully flip it over and lay the screen on a soft cloth. Carefully put electrical tape on ribbon cable to hold it in place (see pic 2).
5. Flip over the tablet over and press the power button again to turn on the tablet and verify function.
6. Replace the cover of the tablet. Go around the entire tablet edge and gently press the screen into the cover. You should hear the locking tabs snap as they lock back into place.
Recovery if the screen does not light after replacing the ribbon cables.
1. Unlock and remove the ribbon cables again.
2. Remove the five screws holding the battery in place.
3. Carefully lift the battery out of its position and gently lift up on the wires connecting it to the tablet, the connector lifts up from the tablet to separate.
4. Wait 30 seconds and replace the battery and cables. Repeat step 5 and 6 above.:good::good::good:
- Mike
as mike suggest, unless hardware issue, reseating cable fixed my similar issue as well.
make sure to secure those cables with the tape so it doesn't happen again.
This! As Mike recommends above! I replaced a failing battery and the unit worked great, but coincidentally dropped my note the next day. The screen was black and I figured it was dead until I read this, figured nothing to lose and opened it back up. I reset the ribbons, taped them down and I'm back in bussiness. I suppose the drop was just enough to lose or unseat the ribbons. I taped thenm in place and all is good. A million thanks!
Hi,
I have to following problem:
My HTC One M8 has colorful grainy static screen and sometimes the picture turns off, like a cable is loose. I read all the forums and search google all over for a solution, most of them claimed that after a panel replace it will be fine. I switched the whole front panel for a new one, but after assembly i have the same problem. The phone is working, because i can unlock the screen lock, turn off the phone, i get the notifications and everything, but the screen is just static noise. I'm assuming that maybe it is some graphic fault, but not related to the lcd panel or the cables (they are all brand new, and i double checked all of them). Is the logic board responsible for the image? What should i try to replace next the upper motherboard, or the middle logic board?
Shad
pic related
imgur . com/a/kjR6F
Oldai3912 said:
Hi,
I have to following problem:
My HTC One M8 has colorful grainy static screen and sometimes the picture turns off, like a cable is loose. I read all the forums and search google all over for a solution, most of them claimed that after a panel replace it will be fine. I switched the whole front panel for a new one, but after assembly i have the same problem. The phone is working, because i can unlock the screen lock, turn off the phone, i get the notifications and everything, but the screen is just static noise. I'm assuming that maybe it is some graphic fault, but not related to the lcd panel or the cables (they are all brand new, and i double checked all of them). Is the logic board responsible for the image? What should i try to replace next the upper motherboard, or the middle logic board?
Shad
pic related
imgur . com/a/kjR6F
Click to expand...
Click to collapse
I've got the exact same thing here.... Searched a lot around without finding anything that has resolved my case. I ordered a replacement screen for a cracked screen on the first phone, but when I tested the LCD before I assembled everything together it was showing just noise like in your picture. I assumed the LCD was bad, so I ordered a new one. But the new one was acting exactly the same.
Yesterday, I was approached by another one who needed help with their M8, and that phone needed to have its volume buttons replaced. So, I reused the parts from the old M8, but when I booted the phone after repair, it showed this same noisy screen as the first M8 I tried to repair. Anyone here that knows these phones and what is going on here? I'm pretty sure I have 3 working LCD's here now, and suspect something strange going on with the mainboard or controller for screen.
Anyone?
As I was playing with my Zenfone 2 the touch just stopped working.
The phone glitched out with thr flip cover mode and then back to normal.
And it wouldn't respond
Now after two months I've opened the phone and the touch won't work at all .
If I replace the touch screen that would be my second LCD replacement so:
Is it worth replacing the LCD again ?
Is there any possibility that it could be a motherboard issue instead of the touch screen.
adaa1262 said:
As I was playing with my Zenfone 2 the touch just stopped working.
The phone glitched out with thr flip cover mode and then back to normal.
And it wouldn't respond
Now after two months I've opened the phone and the touch won't work at all .
If I replace the touch screen that would be my second LCD replacement so:
Is it worth replacing the LCD again ?
Is there any possibility that it could be a motherboard issue instead of the touch screen.
Click to expand...
Click to collapse
that will be completely useless. neither it is a touch or screen issue not the motherboard. issue is either loose screws or bad sim flex. just open all the screws and open cover. close cover and tighten every screw firmly. if still the issue better turn of cover view. or change sim flex
sukhwant717 said:
that will be completely useless. neither it is a touch or screen issue not the motherboard. issue is either loose screws or bad sim flex. just open all the screws and open cover. close cover and tighten every screw firmly. if still the issue better turn of cover view. or change sim flex
Click to expand...
Click to collapse
Yeah I've cleaned the cable contacts and also the display cable was slightly folded.
Now touch works but as happen before sim speaker and fast charge won't work because of the faulty sim and data ribbon cable that's just 2$ replacing.
As I've changed two phones ( a Le 2 and now a Redmi Note 5 China AI) the Zenfone will finally replace my mom's crappy MTK6580 phone
Hello,
Today I disassembled my LG G4 to change the camera. I followed tutorials online and this is the second time I'm repairing this phone.
Previously I've repaired two other phones.
I disconnected all connectors (back and front cameras, display) removed the motherboard from the frame and put the new camera in.
After that I put the motherboard back and connected the things back. The device booted up fine but sadly the touch on the screen wasn't working.
Display worked fine, using a mouse and keyboard I even tested the new camera.
I disassembled and reassembled the device a few more times. The screen connector has no visible damage however the touch is not working no matter what.
I tried starting it without cameras connected, no change.
Any ideas? Am I missing something?
pepo930 said:
Hello,
Today I disassembled my LG G4 to change the camera. I followed tutorials online and this is the second time I'm repairing this phone.
Previously I've repaired two other phones.
I disconnected all connectors (back and front cameras, display) removed the motherboard from the frame and put the new camera in.
After that I put the motherboard back and connected the things back. The device booted up fine but sadly the touch on the screen wasn't working.
Display worked fine, using a mouse and keyboard I even tested the new camera.
I disassembled and reassembled the device a few more times. The screen connector has no visible damage however the touch is not working no matter what.
I tried starting it without cameras connected, no change.
Any ideas? Am I missing something?
Click to expand...
Click to collapse
You can try cleaning all the internal connectors with 90% Isopropyl Alcohol but if that doesn't work and you're sure that all connectors are clean & solidly connected, you may have to replace the Touch Screen Digitizer (with frame) in order to solve.
Replacements aren't that expensive - google it for local supply or check out: https://www.aliexpress.com/item/For...lgo_pvid=2fd011e4-25cc-4cd1-a57f-b7878b272ca7
Thing is I don't know if the problem is motherboard connector or screen ribbon.