i thought i would post an interesting probelem i have just fixed,
seemingly between text messaging, my screen started displaying what looked like all the colours in negative, after having many years of use out of my device, i though it had finally packed up for good,
everything worked as normal aside from the display of colours, and there was a strange lack of pixels displaying vertically which made certain screens impossible to read,
having pulled the hermes apart on past occasions, i decided that before writing it off i would pull it apart one last time for a squiz
i found some interesting things, i have photographed these things so that if someone else is having a similar problem, it may help them out and save them the cost of a new phone/screen
what i found was a carbon deposit running across some of the connectors which run from the screen to the circuit board, after carefully running a fine grade of emery paper (800grit) over this to clean it up, this had to be done carefully, as the gold layer is microns thin, and the copper layer is revealed within seconds, much more rubbing would probably strip away the copper as well, so it might even be a good idea to try 1200grit
(making sure the carbon bridged circuit was gone) i put it back together and everything works fine)
not sure what cased it, the only thing i can think of might be moisture (it was raining the night before, and a drop might have worked its way just under the screen)
image links:
http://img231.imageshack.us/i/imbroken.jpg/ (photo of working tytn next to broken tytn)
http://img22.imageshack.us/i/fileexplorer.jpg/ (closeup of screen displaying graphical glitch)
http://img19.imageshack.us/i/problemja.jpg/ (closeup of burnt circuit)
http://img19.imageshack.us/i/afteremery.jpg/ (closeup of cleaned up circuit)
If it happens again, instead of an emery cloth, try a cottonbud soaked in isopropyl alcohol. DON'T use metho as this will cause corrosion...
Cheers...
Related
Has anyone had any success fixing the hardware on these units? As I have mentioned elsewhere on these boards, I dropped mine and now two things have happened: Firstly having successfully upgraded the ROM/firmware to XDA, the touch screen has stopped working almost completely. Occasionally it does respond to the touch, and the bits which respond are uniform but aren't the bits where you have touched!
Secondly some vertical lines have started to appear to the extreme right 2-3mm of the screen, indicating that there is some type of chip at the edge of the screen??? (someone suggested the digitiser but when I tried to ask a question about this, no one seemed to know what or where a digitiser was) In addition, when I press on the casing at where the lines emanate, the lines get worse.
I took the back off and found that it does seem very difficult indeed to get at the screen to replace it. Secondly, there are some difficult-to-identify bits floating around inside it (they may be just retaining pieces for the lower left hand case screw which is missing)
As there has suddenly appeared a job lot of 100 of these (obsolete?) screens floating around New York I was wondering whether it was in practice possible to replace one or is the amount of work involved cost-prohibitive?
It would be kinda nice to get this unit operational again (especially now that I have successfully loaded your ROM and unlocked it) if this could be done at not too great a cost.
The digitiser is also known as the glasstop and it's the pressure sensitive cover over the top of the LCD - it is a seperate unit although attached firmly to the LCD it can be replaced.
Try www.ppctechs.com for a price? It's farly easy to remove the screen if you want to do it yourself - I've seen a few guides on the internet.
Richard.
p.s how much / where was the job lot of screens?
china
They seem to be originating in China though I had a disastrous time getting hold of some. I got two. not sure if they are the sony originals but will try to install and report back if I can figure out how to get one in.
Where did you see the instructions on taking this thing apart?
I was wondering about the viewing angle on my gtablet and did a quick search on gtablet and teardown. I noticed some people playing with it last november for other reasons.
A bit ago, when I was building a multi touch laser table a bit ago, I started playing with the different layers of a standard LCD monitor. I ended up killing on monitor so I have some extra parts... One of the layers I found out really helped the viewing angles (diffused layer between the light source and the lcd).
Has anyone looked to see if you can seperate the lcd layers and if there was room for a thin sheet of plastic?
Has anyone taken their gtablet apart and been able to put it back together without major problems?
I'm not sure if I have the to take mine apart and do this yet... but I'm getting close. But if others have taken theirs apart and reassembled it... I would at least take it to that level and see how my confindence is.
(also would be nice if I could add a led behind the buttons... wonder how doable that would be..
I have taking my a part a few times but never getting into take out the LCD ... it was pretty easy to take out and put it back ... i have changed the LCD of various laptop and recently one on the Archos 70IT and yes, the LCD can be separated with a fews tapes and metal clips to remove ... next time if i have to take out my Gtab, i will take note of the LCD to see if can de separated with Clips or tape or both
Lilwolf2000 said:
I was wondering about the viewing angle on my gtablet and did a quick search on gtablet and teardown. I noticed some people playing with it last november for other reasons.
A bit ago, when I was building a multi touch laser table a bit ago, I started playing with the different layers of a standard LCD monitor. I ended up killing on monitor so I have some extra parts... One of the layers I found out really helped the viewing angles (diffused layer between the light source and the lcd).
Has anyone looked to see if you can seperate the lcd layers and if there was room for a thin sheet of plastic?
Has anyone taken their gtablet apart and been able to put it back together without major problems?
I'm not sure if I have the to take mine apart and do this yet... but I'm getting close. But if others have taken theirs apart and reassembled it... I would at least take it to that level and see how my confindence is.
(also would be nice if I could add a led behind the buttons... wonder how doable that would be..
Click to expand...
Click to collapse
There is a post with pictures of a guy who backlit his buttons. Seemed pretty simple for someone of his ability, but far beyond mine. Ghetto button (drops of reflective paint on the side) for me. Search for LED buttons or something similar. Never mind, found it here: http://forum.xda-developers.com/showthread.php?t=899132&highlight=LEDs
Hello all, and XDA developers,
I'm a short time lurker, and flasher, but that's besides the point. I've started my own business repairing phones and I've gotten very good at it, I have extremely fair prices, and this is putting me through college.
I've ran into an issue and I can't figure it out. I try to stay up to date on phones since my job requires that I work on phones, and although I couldn't find all the information about the hardware under the screen of the SGS4 i decided to replace a broken glass screen any way..... well now I have a dissatisfied customer on my hands and i'm doing everything in my power to rectify the situation.
What I did:
I used a heat gun to lightly heat the screen of my customers broken phone, like I have done many times before with other models of phones. I scraped off the old glass, cleaned the glue out thoroughly with alcohol and a small piece of microfiber (like for cleaning screens and glasses). I laid down 3m tape (possibly in the wrong place). Put the new glass on, and PRESTO done.......
The result:
A beautiful new screen, but the wake up motion doesn't work any more (where you swipe your hand across the screen w/o actually touching it), and the screen automatically blacks out once a call is placed. This may be because of where i placed the tape, but a new issue has reared it's ugly head...... It's typing now... by itself.... during calls and at other times. She wanted a different color for the screen and i told her that I will replace the screen and fix the issues all in one motion, but I'm not sure what is making it type on its own. Does anyone have any clue as to what could be causing this issue? I have until the afternoon of 9/25 Central time (UTC-06:00)
Thank you to everyone for existing, this forum, even if it doesn't resolve this issue, is simply a work of art by mad geniuses from all over the planet. I love everyone of you.
Hey all -
My wife, deep in the midst of pregnancy-brain, washed her beloved Fireball a couple weeks ago. Long story short, she tried to power it up too soon, and now the LCD backlight is dead.
Everything else seems to function fine, so I decided to see if there was something obvious that could be fixed. Sure enough, at one of the connections between screen and mainboard, there looked to be some small electrical POOF type scarring. One of the traces on the ribbon cable is missing a chunk of conductive material right next to the connection, so it would seem replacing the whole assembly (digitizer/LCD) should restore function. Except - right next to that spot on the mainboard is what looks like it might be a diode that might have seen better days. I'm not sure, and I haven't been able to find any closeups of the inside of the phone to verify what it's supposed to look like.
So what I'm wondering is if anyone here can take a peek at these pics, note the potential damaged area, and tell me if that little bit of badness means I have to toss the phone.
Thanks!
Merry christmas to you! ^_^
Today, after 2 weeks, i removed the original screen protector from the display, and noticed some strange big lines/waves on it: three horizonal lines and one wave on the left side. They are not scratches (and could not be) and the display isn't cracked.
At first i thought it was dirty glue so tried to clean it gently with a bit of soap. They seemed to be gone away. But then when i put a finger on the screen, they reappeared and i noticed that they were invisible only when the screen was completely clean and black. Tried again with more force and soap but without success. I searched and found this thread: http://forum.xda-developers.com/g4/general/screen-coating-issues-t3134029
it's exactly the same problem described here.
In conclusion, as soon as i have time, i will go back to the store and ask for warranty replacement because it seems an oleophobic coating/ screen refining issue.
Has anyone noticed this kind of defect? In my case, it's really evident. Looking more carefully i saw there are at least three more waves like that.
(on the second picture i reproduced the lines i see on the display)