[Q] Vertical line after screen replacement - Nexus 4 Q&A, Help & Troubleshooting

Had to buy a screen replacement for my Nexus 4.
After the replacement i can see one distinct vertical line to the left. It's purple on white background.
I can also see it in recovery mode, but when i take a screenshot it doesn't show on the picture.
Is this a malfunction of the new screen, or did i mess anything up?
The screen i ordered missed the frame so i had to buy a front frame seperately and glue the screen to this.
I used this guide:
http://www.youtube.com/watch?v=YSe1I0MlpLI
everything went well, except one thing; when i connected the flex cable to the frame (check @ 23:19) i removed the little blue transparent plastic sticker, i thought it was a protective sticker cause my screen was new.. (the guide also said i had to remove a sticker if it was new)
but i found out right after it was actually supposed to be there.. i sticked it back on, though i didnt take care to align it 100%,.
This was the only thing i did sloppy..
could this cause the vertical line? think i'm going to open it up again and try set it straight if the line annoys me too much, but does anyone know what the purpose of this little blue sticker is? it looks like plastic so i thought it weird that this should lie between a cable and the frame?
anyone know?

Not sure about the blue sticker but it's either a defective screen, or more likely a badly seated flex cable.
I haven't had to change a screen since my old Nokia n95. That had something similar. Though mine was a line of purple and the backlight would only come on if I squeezed the phone.
Taking the screen back off, removing and reseating the ribbon cable fixed this issue.
I'd say it's likely to be the cable because the colours are sent as rgb values.
In your case if your only getting red and blue to x row on the screen then that will appear as purple.
I'd be less likely to think that it's a screen problem because either the whole row would be black, or there would be specific pixels that would be missing an rgb and not the entire row
Sent from my Nexus 4 using xda app-developers app

Related

SOS - Hermes works fine just that there is NO screen!

Really need help here,
My hermes suddenly decided that visuals are no longer needed.
That means the screens stays off all the time (yes even in bootloader mode).
It works, receive calls and flashes roms but in no situation can I see anything on the screen (pitch black screen).
I've got no warranty so I took it apart and checked each cable and connector - no issues were seen. I tried changing SPL-s, RUU, Roms all worked but left my tytn with that black screen.
Did anyone see this happen or has any advice?
This sucks big time :-(
No one? Oh man, I guess it's dead then :-(
Last bump before giving up and throwing it away - please?
send it to me if your gonna throw it away : - 0
I've given up on mine as well. It has white screen though. Where do I dump this thing?
If it is out of warrenty, I would take it apart as is sounds like the hardware, check the connections to the LCD. Does the backlight still work, or if you put it in strong sunlight, can you see the LCD working?
My Hermes had a white screen also. I found that if I squeeze the bottom right hand corner whilst resetting it would sometimes work. It seems there is a chip on the switch board that needs the right ammount of pressure on it. I think it was a design flaw as the herm200 and 300 are different. If applying pressure works and you are confident enough take the hermes apart and put a couple of small pieces of plastic or paper between the front buttons and the small square chip on the switch board. This worked for me.
The service guide is available if you google. Let me know if you need more info.
As for the black screen that sounds more serious sorry not seen that one.
what are you guys willing to sell your pdas for? Mine fell in a puddle and i need one for parts. The white screen might be fixable the first couple of times but then it dies off for good, the black screen i've never heard of.
So if you want to sell for a reasonably cheap price let me know, i can buy a new keypad online for $50. So around there would be nice!
i.a.wright said:
My Hermes had a white screen also. I found that if I squeeze the bottom right hand corner whilst resetting it would sometimes work. It seems there is a chip on the switch board that needs the right ammount of pressure on it. I think it was a design flaw as the herm200 and 300 are different. If applying pressure works and you are confident enough take the hermes apart and put a couple of small pieces of plastic or paper between the front buttons and the small square chip on the switch board. This worked for me.
The service guide is available if you google. Let me know if you need more info.
As for the black screen that sounds more serious sorry not seen that one.
Click to expand...
Click to collapse
I just tested this on mine and actually got some results.
mines the opposite though, it will NOT work with any pressure. I left all the screws loose for that board under the buttons, and left the LCD assemble screws out on that end and it works, But if I press the keys it whites out again and won't come back until I repeat the dis-assemble/re-assemble
I had a similar problem but this was after someone dropped mine on the floor. The screen would just be white screen, while everything worked. If I pressed the bottom right of the phone it would sometimes come on and stay on for a little while but would eventually always go to white screen.
I did manage to use the phone but had use a program called Net Control which allowed me to control the phone over WIFI with the phone screen shown on the PC. Got the phone replaced in the end by the people who dropped it.
i got the flex cable and my phone still has the white screen problem....wtf///

White screen all the time. What should I buy?

Hello,
for first I've already read some topic covering the white screen problem. I have the white screen every time on my Hermes since booted. Going into bootloader also shows white screen. I don't see any signs of misalignment.
I've already taken apart my Hermes and reconnected all connectors I've seen, including D-Pad connector, tightening and loosening the screws by it. I see there's nothing else I can fix without replacing any parts (or am I wrong?) What should I buy? Do you think that the actual screen may be faulty? Or maybe the flex is damaged and I should buy it? (well I think that some chip is connected to flex so I don't know if it can be replaced anyway). My main question is: if the screen is all white, is it possible that the actual screen be faulty?
It could be a number of things which could amount to $$$$ by throwing parts at the phone - may be cheaper to just buy another. Before the completely all white screen did you have occasional white screens with increasing frequency? First try some of the fixes for correcting whitescreens - pressure on the dpad - etc. If you still get nothing the chip could have come loose - but who knows?!!!! Need some more information - history etc.
Unfortunately don't know the history... bought cheap off ebay hoping it can be easily fixed already ordered the screen, if no luck, will send as spares/repair in my country - should earn something anyway.
i have a fault with mine some times (well a lot now) when i open it or close it all the way i get a funny fuzzing on the screen and some times it just ends up going black, move it back and forth a bit and the screen collour is inverted. i have to press the power button twice once for off then back on and it stays normal collours till u move the screen again. is this called white screen?
Not really - yours should be an easy fix. Seems like the flex cable is either loose or cracked slightly. It only occurs when you slide the keyboard out right? Any problems with the front keypad - with the unit closed?

[Fixed] Display color all messed up in horizontal mode.

So, I guess I screwed with something on my phone, but my display now shows "color bleeding" mostly when i open the phone up in horizontal mode. Would this be a problem with the flex cable? if so, just replacing that cable should fix the problem right?
I am able to disassemble the whole phone no problem.
I am experiencing the exact same issue, its bloody annoying.
I'm fairly certain it is the ribbon, but I wouldn't know where to get a new one, so havn't tried swapping it yet.
Did try disassembling and cleaning it out a bit though, no luck
-Nipqer
Could you post a picture of what you're talking about?
Sadly enough, I do not have a camera other than the one on my dz... a screenshot wouldn't do anything since it just looks fine.. but it's something with the physical hardware part. I'll see if I can borrow a friend's camera when it happens again, but essentially the red and blue colors look like it's splotched in different parts and sometimes it even "pulsates"
it doesn't do it in vertical mode, but in horizontal mode.. it appears instantly.
Thanks to someone in another post that led me to the amazon link for the ribbon cable.. the phone now has no color bleed. Woohoo!
For those who want the link:
http://www.amazon.com/gp/product/B005IMHAGW/ref=oh_details_o00_s00_i00
It works great and looks exactly like the original.
I'm experiencing a slight color disfiguration. I traded my girlfriend my phone for a few days and when i got it back, the bottom half has a yellowish tint. Is the flex ribbon the reason why it's like this?
is it the same tint whether or not you're in vertical or horizontal (keyboard open) mode?
if so it might be your flex cable or it might be the actual screen itself.
Yeah, the yellow (and now with blue) tint is in both modes. lower half of both sides (vertical and horizontal)
wait, does the tint change on the screen? as in does the tint stay in the bottom half of the vertical screen and stays in the right half in horizontal? or does it shift so that it goes to the bottom half in horizontal? if it stays in the same physical space in both modes, then it might be the screen itself, but if it shifts.. it's most probably the flex cable.
yeah, it shifts. but now the blue and yellow lines is throughout the screen. initially, i thought it was a ROM thing, so i changed it to see it in a different rom.
sounds like a flex cable problem. I can't guarantee it since it's one of those "replace it and see if it works" deal.

Is screen totaly damaged?

Hi, had my defy about 12 months and it's great but tonight i dropped it and as soon as it hit the floor the noise it made i knew that something bad had happend. The glass and phone itself isn't damaged but about a third of the screen on the right has black, blue, red and white lines going in straight lines from top to bottom and also has a 45 degree line from bottom right corner all the way to where the screen is still "good". Also if i apply preasure to the damaged part the lines flicker and I can see parts of the screen that are otherwise invisible due to the lines. Does any one know if the screen is damaged beyond repair? Or do you think I could fix it in its current state? Any help provided will be most appreciated as I would be sad to see this phone go. I have attached a picture of the screen to help better undertsand.
Bill.
Change The display .Buy from the www.etradesupply.com/ they shiping very fast and product is good
ownerovadefy said:
Hi, had my defy about 12 months and it's great but tonight i dropped it and as soon as it hit the floor the noise it made i knew that something bad had happend. The glass and phone itself isn't damaged but about a third of the screen on the right has black, blue, red and white lines going in straight lines from top to bottom and also has a 45 degree line from bottom right corner all the way to where the screen is still "good". Also if i apply preasure to the damaged part the lines flicker and I can see parts of the screen that are otherwise invisible due to the lines. Does any one know if the screen is damaged beyond repair? Or do you think I could fix it in its current state? Any help provided will be most appreciated as I would be sad to see this phone go. I have attached a picture of the screen to help better undertsand.
Bill.
Click to expand...
Click to collapse
I think-cable screen. Need to disassemble and see.

[Q] Bad screen or damaged flex cable?

I just replaced the lcd / digitizer and now only see colored lines.The screen has a vertical line down the middle, usually the left side is brighter and has blue and yellow horizontal lines usually going about halfway down, the right side has pink and yellow lines. After a few seconds the colors dim and the screen ends up grey/white on the left and dark on the right with a darker border around the whole thing. When booting up there is usually a larger patch of solid color that shifts a bit before fading. I can't open it back up until tomorrow or the weekend. Does it sound more like I damaged the flex connector or received a bad screen? By doing some blind touching I can tell via audio that the touch screen is working. Any advice would be appreciated.
crossbred900 said:
I just replaced the lcd / digitizer and now only see colored lines.The screen has a vertical line down the middle, usually the left side is brighter and has blue and yellow horizontal lines usually going about halfway down, the right side has pink and yellow lines. After a few seconds the colors dim and the screen ends up grey/white on the left and dark on the right with a darker border around the whole thing. When booting up there is usually a larger patch of solid color that shifts a bit before fading. I can't open it back up until tomorrow or the weekend. Does it sound more like I damaged the flex connector or received a bad screen? By doing some blind touching I can tell via audio that the touch screen is working. Any advice would be appreciated.
Click to expand...
Click to collapse
just open the device again and check whether you have connected the display(the clamps) properly to the board... i had fixed a clamp loosely and i had the same issue (weird layers of color on screen). i opened the device again, fixed every flex cable perfectly to the board(found one fixed loose) and it worked....
I'm going to assume it was the little LCD flex cable. After removing it and plugging it back in, both the old and new screens are both completely blank.
The new cable fixed the screen issue.

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