Fix a malfunctioning screen - MTCB Android Head Units Q&A

I bought a Joying head unit from Pumpkin several months ago. A few months back, the screen would occasionally flash, get vertical lines on it, and then go dark. As far as I can tell, the touch part of it still worked and I could change modes if I guessed the correct spot to press.
Pushing on the sides of the bezel would sometimes bring the screen back to normal, but it would fade away quickly.
A few weeks ago, the problem became worse and it remains dark unless I press the bezel. Even then, it doesn't work all the time.
Pumpkin was kind enough to walk me through a repair procedure (Restore stock, reset, take off faceplate and check ribbons) but nothing helped. They now want me to pay to ship it to them, but offer no guarantees. They are under the impression that it is the Android board and I would have to also pay to replace that.
Does anyone have some other ideas on what I can do to fix this problem? I don't think it's just a backlight issue, since the screen does funny things prior to going dark. I also don't think it's an Android issue, since everything seems to work except the screen. I sort of think it just needs a new screen, but I have not found a way to purchase a new screen to install.
Thanks,

Related

spot like dot inside touchscreen?

Hi,
I've just had my HTC Desire for about a week and its been working fine, however i have just spotted a concerning water dot-like spot inside my touchscreen but its not affecting anything i do when i use it. I have not dropped it at all or done anything malicious so i'm assuming it was already there from the start. I don't have a screen protector yet but will be receiving it in the next couple days.
here it is > http: //i41.tinypic.com/2h2nsbb.jpg (remove space)
it might be hard to see but its there.
Does anyone know how i might clear that up or should i just leave it since its not really effecting the touchscreen. i'm not sure if i should get a replacement
Any suggestions welcomed.
cheers
I would insist on having it repaired or replaced from where ever you got it from. I'm guessing there is no obvious damage to the top of the screen?
Yeah, that would do my head in! A screen protector may well render it invisible though.
I would contact the provider and insist on a replacement. I would just say there is a mark on the inside of the screen, I wouldn't mention water if I were you, just to be on the safe side, it's one of those things where the conversation could get irksome.
Cheers for the replies..
I will see what 3 can do as i bought it on a PAYG. You can bearly see it until you look closely near light, thats why i only just noticed it yesterday.
No damage at all to the top screen let alone the phone. It still looks brand new. AMOLED screen is faultless and everything works fine.
I reckon it'll be annoying to get this replaced as they have limited stock but i'll see what 3 would suggest me to do when i go there tomorrow..

[Q] screen stopped responding - bad digitizer?

For the last day or so the touchscreen on my Tilt 2 will not respond. I thought Sense was hanging due to text messages so I deleted all of them this morning. That didn't help and neither did multiple reboots so I finally did a hard reset. Now I am really hosed since I can't get through the initial setup. Sounds like the digitizer may have bit it?
I am not at home to flash an official ROM right now but I will try that tomorrow. Other than that does anyone have any other ideas? I am paying for the warranty and insurance so I think I can get it swapped if I have to. Are they still sending out Rhodiums or do they have another device to send in its place now?
Okay, I just flashed the latest official ROM downloaded from HTC. Screen still isn't working. :-( Guess it's time to contact Asurion.
my tilt2 is also doing this, it stopped working about a week or two ago, then started working a few hours later. lately it will work sporadically and most the time not how it is supposed to. i have simplicity. i also have the insurance and i think mine is still under warranty, will i need to put the original sense back on it b4 i send it back in? also, on another note, sometimes when i plug it in to charge it the orange light doesn't come on indicating it is charging, i have to hold the power button for a few seconds. it started around the same time, are these issues related.
Possible fix
Ok, so I have learned that these screens are pretty sensitive, especially if you put them in your pocket. You can sometimes revive this by sliding your fingernail into the seam along the outer edges of the screen and running it along the seam as if you were trying to peel the front (digitizer) off of the LCD. It somehow releases the stuck screen or something. Mine has been doing this off and on for a while and I've been able to revive it several times with this method, though it's getting too frequent now and I'm thinking of trying to replace the digitizer all together. I'm afraid to make that leap though.
SgtMac02 said:
Ok, so I have learned that these screens are pretty sensitive, especially if you put them in your pocket. You can sometimes revive this by sliding your fingernail into the seam along the outer edges of the screen and running it along the seam as if you were trying to peel the front (digitizer) off of the LCD. It somehow releases the stuck screen or something. Mine has been doing this off and on for a while and I've been able to revive it several times with this method, though it's getting too frequent now and I'm thinking of trying to replace the digitizer all together. I'm afraid to make that leap though.
Click to expand...
Click to collapse
The reason this "fixes" it is there some dust or dirt between the screen & panel. If enough gets in there, the digitizer gets confused and ignores any presses.
If you completely disassemble the screen and thoroughly clean it, I bet it'll be fine - no need to replace anything. However, this is a very tedious and delicate process, so be extremely careful.

Cracked screen

Hello!
Today dropped my phone and screen got covered in spider web. The display itself looks fine, but its covered it spiderweb. The touchscreen doesnt respond at all.
What do i need to do now? I looked at local repair shops, they ask atleast 100 euros. But on ebay i can find lcd display+screen digitizer for 55 euros shipped, or screen digitizer starting from 10 dollars!
Can i buy only screen digitizer (as i understand that top layer of glass thats cracked is screen digitizer?) and replace it? Or changing LCD display along with screen digitizer is a must?
http://www.ebay.com/itm/NOIR-VITRE-...Pièces_de_rechange_outils&hash=item27f98e5d31
So this should fit..right? And are all 3 models LS970, E975 and e973 really same size? Cuz i`ve read people have got smaller screens than original from some sellers on amazon.
Replacing a digitizer is pretty hard and time consuming, that's why people usually replace the whole lcd+digitizer+glass assembly. You will also need adhesive and a heater/appropriate tools. It can be a great learning experience if you don't mind potentially busting your phone. There are no shortage of instructionnal videos on youtube on the subject.
Also, a new G2 is only 190$US .... Just saying ...
noxlord said:
Replacing a digitizer is pretty hard and time consuming, that's why people usually replace the whole lcd+digitizer+glass assembly. You will also need adhesive and a heater/appropriate tools. It can be a great learning experience if you don't mind potentially busting your phone. There are no shortage of instructionnal videos on youtube on the subject.
Also, a new G2 is only 190$US .... Just saying ...
Click to expand...
Click to collapse
As i have two other phones. The g2 mini with Tegra and a razrHD. I'll give a try, thanks for the tip.
Well, i ended up ordering that LCD+Digitzer from ebay. Everything was fine for 2 months, now i have quite large spot that doesnt respond to touches. (See attachment) i already tried disconecting the lcd and digitizer..still same. Is it worth trying to flash another rom? I already flashed stock kdz (had stock before too..)
This happened just today, right after ghost touches went crazy and rondomly oppening everything.
EDIT: That spot is changing sizes..form remains, but it got a bit smaller now. Its truly weird. I put the phone outside for few minutes (its +9C outside) and touchscreen works fine now! What is going on?
EDIT 2: After few minutes of usage, the spot is coming back
WreckLv said:
EDIT: That spot is changing sizes..form remains, but it got a bit smaller now. Its truly weird. I put the phone outside for few minutes (its +9C outside) and touchscreen works fine now! What is going on?
EDIT 2: After few minutes of usage, the spot is coming back
Click to expand...
Click to collapse
I had dropped my LG (more than a couple of times) on its face and it seemed to suffer stroke-like symptoms: one side of the screen was completely dead to touch, and the rest of the screen would occasionally act as though I was touching everywhere which opened programs and messed with the keyboard. I was stubborn and just lived with it and over time, it stopped trying open programs and whatnot. Recently, dropped it again, this time it was a bit more serious. Still no visible damage to the screen, but the "dead spot" moved to the centre of the screen, and again, occasionally tries to open programs and add words to my messages.
At first I thought it all could be related to a software issue. Unfortunately, after installing new ROMS, it never fixed the problem. I bought a digitaliser screen from Ebay as well. I'm waiting on the adhesive tape still so I can't say if this will fix anything. I kind of have a suspicion that its a loose connector (the top middle part of the screen gets super hot only after a couple of minutes of being left on).
I'm just wondering if you have tried taking it apart again to recheck the wiring? I think we may have similar problems (your situation is the first I've come by on the internet that is anywhere close to what's happening to my screen). Thanks so much!

Note 4 Repair Issues

I had my note 4 screen assembly replaced after I dropped it. However, the screen is no longer completely secured in the phone. The screen pushes into the frame if I place pressure on the screen and I can get my finger under the edge of the assembly on the top left corner. The home button is also loose, but gets tight like it should be if I hold the screen down. This is an annoying issue and I've recently noticed that dust is getting inside the phone, which I'm worried will cause hardware damage. The front camera is already blurry and cloudy from dust getting inside. If I take the screen off and apply new adhesive, will the screen sit in the frame like it should or is it impossible to restore the feel on a phone with a screen replacement to what it was like from the factory? I hope you hear from you guys, and thanks in advance.
I would take it to a local Sprint service and repair location (or where ever you got your screen replacement). They should be able to reseat your screen in the housing and clean your camera right up. In terms of applying new adhesive, you shouldn't really need to. The 15 some odd screws on the back should take care of it. Source: I'm a S&R Technician
Thanks for the help! My problem is that I'm hesitant to return to the shop where I got the screen replaced, because when they originally replaced it I was unsatisfied with how it fit so I went back and had them do some more work. It was alright at first, but it began to get steadily worse in a fairly short amount of time. So I'm a little cautious of going back there to ask them to do more work. If I asked them to reseat the screen assembly, do you think it would help? Also, is it possible to return to an almost-factory feel with a replaced screen or do I need to accept that the assembly will never be quite as tight as it originally was?
Similar issue
I had a similar issue and I took it back to sprint which they fixed regardless of my device being rooted.
Did you have the screen replaced before you took it to sprint, or was the screen loose from the factory?
you can find the replace guide at ifixit, I don't leave the link,you can google it.
If you want to buy original LCD screen ,you can go to the HCQS.

No Display after dropping phone

Hi,
Unfortunately for me i dropped my phone and cracked my tempered glass in several places. gladly the screen underneath was perfectly fine after drop however, it has developed a fault as the screen won't turn on at all. I tried turning it off and restarting and although i can hear the boot up logo sound i see no picture at all. i can receive calls but cannot answer due to screen not displaying.
The screen had four main pressure cracks.... one is top left, one on the ear speaker, one bottom middle and one bottom left of phone. hopefully you can see it in picture.
Can you give advice on what to try or do to resolve this? will i need a new screen or disassemble to see what the issue is?
I've only had the phone for 2/3 months at most
Thanks in advance
looks like i will answer my own question....
i bought a replacement lcd & digitiser, one complete unit and swapped the necessary components over to new screen. all is working and good. not sure if the screen is repairable but there are other parts inside this screen worth selling on. it still has a non cracked immaculate screen along with the charging port and other stuff inside old screen.
at a cost of £70, i consider this an expensive fix
Thanks for the input kakawak
cheers

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