Database Develop

[Q] Digitizer acting fuzzy

Hello, from some time, the digitizer of my g1 is acting weird, the bottom right part is not sensitive at all, and sometimes the screen gives to the os a completely wrong input, so the screen flicks by itself
Anyone knows what can cause this?
Thanks

Tipika said:
Hello, from some time, the digitizer of my g1 is acting weird, the bottom right part is not sensitive at all, and sometimes the screen gives to the os a completely wrong input, so the screen flicks by itself
Anyone knows what can cause this?
Thanks
Click to expand...
Click to collapse
well my G1's sensor act different whenever I connect it to (not compatible) charger (i.e. Blackberry's OR Motorola's)
Can't say it's due to fall of your G1 (my G1 fall a hundreds of time & still no problem but just accelerometer got screwed )
It possibly can be cause of you HARD PRESSED that part somehow somewhere .......
OR concern some repairer to get it fixed (i.e. Change digitizer)
Best of Luck

[Q] Repairing/assembling G1 -> broken volume rocker and touch panel

Well, I fixed my old broken G1 with new screen, touchscreen panel, case and keyboard.
Now I have 2 issue:
1) Sometimes my touchscreen goes grazy!! If I use the touch test application I see that sometimes when I touch the screen in an area there is another virtual touch in another zone of the screen. I read that it can depend from the current source when I charge the phone.. but I'm going crazy!! I opened my phone 10 times (I thought there was a problem in the cable that link TouchPanel to LCDPanel, because when I lock the cable with the clip it tends anyway to go out from the connector, now I put some scotch tape to fix but the problem is here.. so I think is another problem).
2) My volume rocker doesn't work!!
I bought 2 new keyboard to fix this problem, but no one of that fixed the problem. I thought the first new keyboard had volume keys broken, so I bought another one, but the problem persists!!
Now the Touch problem rarely happens, but the volume rocker is completely unusable..
Someone have experience about G1 assembling/repairing ?
Thanks and sorry for bad english

if you have put in multiple keypads have the same issue i would assume that it is the connection going to the motherboard. just a guess there but its either that or you have had a bunch of faulty keyboards.
only other thing would be a software problem
does the keypad work in recovery (let you go up down throughout the list) ?
as for the touch screen, probably need a new digitizer or flex cable, both are cheap and it sounds like you have the knowhow to replace them.

Ok, but digitizer is new!! screen also is new, and I have bought a total of 4 flex cable because I see that they are fragile (I broke the first I bought).
I tried to change flex cable but the problem remain the same.
The only thing that can be damaged is the LCD cable that links to the flex cable: it has a small cut where the cable have a curve, but the cut don't reaches the contacts (the cable is transparent). I also use some glue and scotch tape to mantein lock the cable.
The digitizer cable is connected to the LCD cable, and then they go to the flex cable that connect them to the motherboard.
The strange thing is that seems a software issue, because if I turn off and than turn on the screen, the problem is fixed for some seconds, minutes and sometimes hours...
Another strange thing is the possibility to control the screen with some metal objects from the moment that the virtual touch problem appear (I can control the screen also without touch it, with hand and piece of metal)
video:

have you tried a factory reset if you think it may be a software issue? if that dosent work you can try install a whole new rom.
really it sounds like it isnt the hardware since you appear to know what youre doing. i have a had a few phones that had screen (digitizer) issues and a new rom flashed cured it just fine
since you dont mind putting a few dollars into it, and your familiar with the inside, you can always try to pick up a cheap motherboard or spare phone from ebay or what have you, then swap the motherboard and you could then hopefully find out if it is the hardware or software

nagash91 said:
Another strange thing is the possibility to control the screen with some metal objects from the moment that the virtual touch problem appear (I can control the screen also without touch it, with hand and piece of metal)
Click to expand...
Click to collapse
Huh sounds like you got a cheap digitizer than. Most good digitizers use heat to touch. If it's literally touch, then sounds like its a fake/meh digitizer. i hate the digitizers that aren't heat, but press. I see them all the time in those first samsuck touchscreen phones. And they usually die in a bit. I had a Samsung behold with a screwed up digitizer

demkantor said:
have you tried a factory reset if you think it may be a software issue? if that dosent work you can try install a whole new rom.
Click to expand...
Click to collapse
Yes I flashed 3 or 4 roms after a wipe (I tried also super-wipe.zip), but the problem is here..
The digitizer works well some times, but sometimes get crazy (you can see in the video).
I don't that my new digitizer is fake, but I really don't know!
BTW I'm trying to repair my phone for fun (now I have desire z) and because I am fascinated by my old G1.
PS:
I see another strange issue--
If I touch the screen when the phone is on a table the screen digitizer is not very sensitive and can't take input from fingertips.
If I touch the screen when the phone is in my other hand, the screen digitizer is a lot more sensitive and it take input from fingertips.
My impression is that there is an electric field or something similar that disturbs the digitizer, and when I take the phone in my hand I discharge that field to ground. Also when I turn off the screen, seems that the electric field discharge so when I turn on the screen is ok, but after some seconds the field returns to disturbs the screen.
I really don't know, but is the impression that I have.. something that is not shielded.
Now I'll try to use my phone in airplain mode.
Thanks guys, I'm happy to see that this forum is still very active

other digitizer problem

hello,
i need some ideas, after i changed my digitizer the screen works perfect with one small important little problem, the buttons from the digitizer are acting like a part of the screen and not like buttons. so basically i don't have any buttons.
any ideas ? i've opened it 3 times i didn't found anything wrong with it. one the digitizer it was wrote milestone, not a853 or something else.
thanks for help

Screen going crazy!

Hey guys.
Lately, my screen has being going insane. Switching between panels, clicking on stuff, lowering the notification bar all on it's own while not responding to my touch input at all!
Weird thing is it happens a couple of seconds after I turn on my screen. So for a few seconds it's fine.
Is there a way to fix that? Maybe the digitizer has either gone kaput or is just dirty?

The digitizer is either broken or there's too much moisture inside.
This topic has been discussed hundreds of times already - look it up please.

Same thing happened to mine... I jus changed the digitizer... I but broke my phone in the process
Sent from my GT-I9100 using Tapatalk 2

Digitizer Problem
Yeah, you just have to change the digitizer. This happened to me twice on the milestone. You could send it for repair, and i do not think it would cost much if its only the digitizer.

Do I need to take the whole phone apart to get the digitizer or is there a way to unscrew the screen directly?

The entire phone must be disassembled to reach the digitizer. The only problem is that sometimes it's not the digitizer that's faulty, but the flex cable, that becomes used in time. So, I suggest you to open it and see if there are any signs of degradation (it's a black ribbon that holds the sensors and the phone calls speaker). If there are, I suggest you to replace that, and not the digitizer itself.

max_3000 said:
Do I need to take the whole phone apart to get the digitizer or is there a way to unscrew the screen directly?
Click to expand...
Click to collapse
Look for video on YouTube.
-CM7 on DInc2

[q] black screen

HELLO...
MY LITTLE SISTER DROPPED HER S3 MINI AND THE SCREEN WENT BLACK.
THE KEYS ARE GLOWING, IT LOOK LIKE THE IS NOT DEEMED TO THE LCD JUST THE GLASS, AND I CAN ACCESS IT FROM MY PC.
IS REPLACEING THE SCREEN IS THE ONLY Solution ? IS CAN BE SOMETHING ELSE?

erlichsefi said:
HELLO...
MY LITTLE SISTER DROPPED HER S3 MINI AND THE SCREEN WENT BLACK.
THE KEYS ARE GLOWING, IT LOOK LIKE THE IS NOT DEEMED TO THE LCD JUST THE GLASS, AND I CAN ACCESS IT FROM MY PC.
IS REPLACEING THE SCREEN IS THE ONLY Solution ? IS CAN BE SOMETHING ELSE?
Click to expand...
Click to collapse
it looks like hardware problem mat.e. can you reboot your phone n download mode or something?

ersersoy said:
it looks like hardware problem mat.e. Can you reboot your phone n download mode or something?
Click to expand...
Click to collapse
no the screen is still black.
I want to solve it at home ( without a lab). Do u think i need to buy a screen replacement?

erlichsefi said:
no the screen is still black.
I want to solve it at home ( without a lab). Do u think i need to buy a screen replacement?
Click to expand...
Click to collapse
it seems that the display unit is crashed.
Replace it (about 120 €) and the device is nearly new