The touchscreen acts weird just above the samsung logo when i'm using the s-pen. it's not accurate at alle (the line is drawn a cm from the point of the stylus) and movements are way bigger than what i'm actually doing with the s-pen. Is this only on my tablet or is it a general issue?
speedfreak007 said:
The touchscreen acts weird just above the samsung logo when i'm using the s-pen. it's not accurate at alle (the line is drawn a cm from the point of the stylus) and movements are way bigger than what i'm actually doing with the s-pen. Is this only on my tablet or is it a general issue?
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Are you charging your tablet? Because if I remember correctly, some reported that when charging GN it may have some problems with touch screen.
andromorph said:
Are you charging your tablet? Because if I remember correctly, some reported that when charging GN it may have some problems with touch screen.
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No, not charging. Just under the front facing camera i have the same problem. The problem is the magnet in the case i'm using!! The problem disappears when the case is not attached. This sucks!
speedfreak007 said:
No, not charging. Just under the front facing camera i have the same problem. The problem is the magnet in the case i'm using!! The problem disappears when the case is not attached. This sucks!
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Yes. Magnets are not good with a Wacom digitizer.
A Wacom digitizer acts by generating a small variable electromagnetic field. It induces a small AC current in the little LC circuit in the pen (that needs not be alimented). This AC current is then detected by the Wacom digitizer (present in the Note's screen) when it switches to "receiving" mode (it switches from send to receive mode many times per second).
In this way the Note knows where the pen is located.
Any magnet nearby the screen can disturb the signal sent and received.
It's not really a flaw in the Note's hardware or software but something that is inherent in how the Wacom digitizer works.
Simple solution: it's better to avoid cases with magnets.
(and that also explains why Samsung original cases don't have magnets... correct me if I'm wrong)
sphere314 said:
Yes. Magnets are not good with a Wacom digitizer.
A Wacom digitizer acts by generating a small variable electromagnetic field. It induces a small AC current in the little LC circuit in the pen (that needs not be alimented). This AC current is then detected by the Wacom digitizer (present in the Note's screen) when it switches to "receiving" mode (it switches from send to receive mode many times per second).
In this way the Note knows where the pen is located.
Any magnet nearby the screen can disturb the signal sent and received.
It's not really a flaw in the Note's hardware or software but something that is inherent in how the Wacom digitizer works.
Simple solution: it's better to avoid cases with magnets.
(and that also explains why Samsung original cases don't have magnets... correct me if I'm wrong)
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I bought the case of ebay, it's very good, but the magnets are not a good idea indeed. I'll try some shielding, but that will be quite difficult.
Related
When the charger is pluged in, the touch screen is way more sensitive when the tablet is
laying down. I wonder how that is?? Pinch to zoom works so much better.
I think it has to do with grounding. When the tab is plugged in it has the most effective grounding path. The second best would be when you are holding it with two hands, and the worst would be when the tablet is laying on a non conductive surface. I think capasetive screens process inputs faster when there is a solid ground for the circuit to reference.
thebrain73 said:
I think it has to do with grounding. When the tab is plugged in it has the most effective grounding path. The second best would be when you are holding it with two hands, and the worst would be when the tablet is laying on a non conductive surface. I think capasetive screens process inputs faster when there is a solid ground for the circuit to reference.
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That's somthing.
Thanks.
[Q] Broken digitizer, screen still receives "touch input" without digitizer??
I recently broke the outer glass/digitizer on my Asus Transformer TF300T tablet. Instead of replacing the glass right away (~$150, wtf?) I decided to take it apart and disconnect the broken digitizer (which wasn't receiving touch inputs because the glass shredded the ribbon) and put it back together. When I used it on my keyboard/mouse dock, at random the screen would freak out as if i was touching the upper corner. I went into developer mode to turn on the "show touch input" feature and it revealed that the device indeed DOES think i am touching the upper corner.
How is this possible considering the lack of a digitizer?
This is quite annoying to deal with just to use my tablet as intended.
Photos:
homeruntilly said:
This is quite annoying to deal with just to use my tablet as intended.
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Unfortunately the way it is 'intended' would be with a digitiser. Floating random voltages or whatever could easily cause this as there is an incomplete circuit where there should be a touchscreen.
SimonTS said:
Unfortunately the way it is 'intended' would be with a digitiser. Floating random voltages or whatever could easily cause this as there is an incomplete circuit where there should be a touchscreen.
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Would, say, electrical tape fix the issues on the connectors? the ribbon is broken by the glass and causes random touch events as well.
homeruntilly said:
Would, say, electrical tape fix the issues on the connectors? the ribbon is broken by the glass and causes random touch events as well.
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Highly unlikely. The problem is that when there is a digitiser in place the resistances are correct - by not having one there anything could happen.
SimonTS said:
Highly unlikely. The problem is that when there is a digitiser in place the resistances are correct - by not having one there anything could happen.
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thanks, I removed a small board that housed the digitizer connections and the micro SD adapter. this fixes my issue with the touch input, at the cost of the built-in micro SD card slot.
good thing the dock has one build in too!
I'm sad to say I finally destroyed my TF300. It fell from about 6 feet onto tile. The screen is cracked in quite a few places, but luckily it didn't spiderweb. The touchscreen kind of works, I say kind of, because it's touching in random places all over the screen. So my question is, can I possibly unplug the digitizer only since the LCD works fine? That way I can use the keyboard dock's mouse or a USB mouse and still use the device. Thanks in advance for any help.
this happened to me as well. On youtube there are many tutorials of how to replace the screen..
they will show you how to take the back casing off
then you can just unplug the digitizer cable (its the yellow cable with two connections on the bottom right of the back of the tablet) this will disable the touch but if you go that far you might as well replace the whole screen you can get online for $50.
and make sure to take note of the digitizer revision number as asus makes 4 different types and only the one will work on your tablet when you want to fix it...its a number on the digitizer cable either g01 g02 g03 or one other i cant remember off the top of my head
schkeet said:
this happened to me as well. On youtube there are many tutorials of how to replace the screen..
they will show you how to take the back casing off
then you can just unplug the digitizer cable (its the yellow cable with two connections on the bottom right of the back of the tablet) this will disable the touch but if you go that far you might as well replace the whole screen you can get online for $50.
and make sure to take note of the digitizer revision number as asus makes 4 different types and only the one will work on your tablet when you want to fix it...its a number on the digitizer cable either g01 g02 g03 or one other i cant remember off the top of my head
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Sorry, I meant that I didn't want to fix the display, just disable the digitizer so that I can continue to use the device via HDMI. If I unplug the digitizer, will the LCD still work?
After unplugging the ribbon cable for the digitizer, most of the random touches have stopped. But now, even using the built in touchpad or a USB mouse, touches do not hold and can cause random presses to occur in various parts of the screen. Any ideas?
I'm not sure but could be a different problem? I've done the same to mine and my keyboard dock works just fine
savergn said:
After unplugging the ribbon cable for the digitizer, most of the random touches have stopped. But now, even using the built in touchpad or a USB mouse, touches do not hold and can cause random presses to occur in various parts of the screen. Any ideas?
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Spontaneous presses? This is at random, some tabs have it, others don't. That ain't from the keyboard; rather from either the digitizer, though detached it might be, or the TS board, or both in close proximity with one another. I've experienced this and still have no idea why. I've had perfectly good dig and TS Board do it when the board is left dangling and not screwed down to the magnesium frame. The only way to stop is to replace the digitizer. Or you can try to yank the dig's ribbons off the glass, as I've noticed ghost touches produced by a dig with partially torn ribbons (on the glass side) that were still connected to the PCB. The dig is not repairable anyways. You're risking nothing.
graphdarnell said:
Spontaneous presses? This is at random, some tabs have it, others don't. That ain't from the keyboard; rather from either the digitizer, though detached it might be, or the TS board, or both in close proximity with one another. I've experienced this and still have no idea why. I've had perfectly good dig and TS Board do it when the board is left dangling and not screwed down to the magnesium frame. The only way to stop is to replace the digitizer. Or you can try to yank the dig's ribbons off the glass, as I've noticed ghost touches produced by a dig with partially torn ribbons (on the glass side) that were still connected to the PCB. The dig is not repairable anyways. You're risking nothing.
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Do you possibly have any photos or tutorials that might be able to help me out so I don't cause anymore damage to the tablet?
savergn said:
Do you possibly have any photos or tutorials that might be able to help me out so I don't cause anymore damage to the tablet?
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Not sure where to start. If you've taken apart the thing before, i'd be easier. Remove the back. Turn off the service switch (Important). Otherwise, you might burn a coil on the motherboard. If you don't know what that is, look at the top of the motherboard. To the left of the power switch (thin amber ribbon for power on top side and volume on right side), there's a switch mounted on the other side but accessible from the top of the board. You'll see the printing "off" and "on" on this side. Slide it to "off" position. (Thumb attached shows location of switch at top, and where the ribbons should be cut off at bottom).
The ribbon part that's taped to the glass is hidden under the lcd. If you don't care, just snip it off where it meets the lcd edge. There's really no need to remove the lcd if you're not intent on replacing the digitizer. Again, since I am not certain what caused the ghost touches in your cases, it's possible they will continue. Hopefully, they won't. But at this point, the digitizer serves no function other than protecting the lcd surface on the outside. No need to save the ribbons.
To tell you the truth, I've tried using the tab with a dock and no touchscreen. You can live with it, but it's enormous inconvenience any way you use the device, from recoveries to roms to any app within. It's just not designed to be user-friendly that way. I eventually gave up and replaced the digitizer. You can find one for around $35.00 these days.
graphdarnell said:
Not sure where to start. If you've taken apart the thing before, i'd be easier. Remove the back. Turn off the service switch (Important). Otherwise, you might burn a coil on the motherboard. If you don't know what that is, look at the top of the motherboard. To the left of the power switch (thin amber ribbon for power on top side and volume on right side), there's a switch mounted on the other side but accessible from the top of the board. You'll see the printing "off" and "on" on this side. Slide it to "off" position. (Thumb attached shows location of switch at top, and where the ribbons should be cut off at bottom).
The ribbon part that's taped to the glass is hidden under the lcd. If you don't care, just snip it off where it meets the lcd edge. There's really no need to remove the lcd if you're not intent on replacing the digitizer. Again, since I am not certain what caused the ghost touches in your cases, it's possible they will continue. Hopefully, they won't. But at this point, the digitizer serves no function other than protecting the lcd surface on the outside. No need to save the ribbons.
To tell you the truth, I've tried using the tab with a dock and no touchscreen. You can live with it, but it's enormous inconvenience any way you use the device, from recoveries to roms to any app within. It's just not designed to be user-friendly that way. I eventually gave up and replaced the digitizer. You can find one for around $35.00 these days.
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Thank you very much for the information.
I don't plan on using it as a daily device, I just picked up my Note 3 the other day, and using the TF300 is going to feel like going back to the stone age. I really just wanted it to have basic functionality, because I still have the HDMI cable for it, and have XBMC and VLC installed on it, so I can play videos easily on my TV. It has Cyanogenmod on it right now, so really, it should be fine for a while. I could probably also hook up my dualshock 3 to it and game on a TV. Portable low-end console. I'll update the thread later if whenever I get around to cutting the ribbon cable. Thanks again.
hi guys,
not sure if you're facing this issue.
i recently bought a protective cover, and after fixing it, noticed that the device is behaving odly.
it sleeps intermittently during use (as if you pressed the on/off button) and when you press on/off to turn it back, the home button and capacitive buttons are not functional. Back, home, and the task buttons can't work... after a few minutes of on/off, then it's ok.
however, when i take it out of the protective cover, it doesn't happen.
any of you have that problem?
Thanks.
Regards,
Liang
Yeah, I've experienced this problem too. I have a case that can flip the orientation of the screen. It seems that if I flip the tablet around the capacitive buttons come back. Very strange problem. I hope they can fix it in an update.
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Hopefully the sensitivity of the magnetic sensor that controls smart cover functionality can be reduced via a software update. Until then being cognizant of it and realizing what orientation we have to keep our cover flaps away from to keep from triggering the screen off feature is all we can do.
Some cases have weaker magnets than others.
muzzy996 said:
Hopefully the sensitivity of the magnetic sensor that controls smart cover functionality can be reduced via a software update. Until then being cognizant of it and realizing what orientation we have to keep our cover flaps away from to keep from triggering the screen off feature is all we can do.
Some cases have weaker magnets than others.
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hi,
the cover i have does not have magnets.
where exactly the sensor that tirggers the sleep?
thanks.
gnilow
The sensor is approximately 1.75 inches to the right of the G in the Samsung Logo and 1.5 inches from the top edge of the tablet.
Have you run a paper clip along all surfaces of the case/cover to determine for sure that there are no magnets embedded within either side of it? Magnets used for the on/off functionality in covers are thin and hidden inside the cardboard that is within the fabric/leather linings.
muzzy996 said:
The sensor is approximately 1.75 inches to the right of the G in the Samsung Logo and 1.5 inches from the top edge of the tablet.
Have you run a paper clip along all surfaces of the case/cover to determine for sure that there are no magnets embedded within either side of it? Magnets used for the on/off functionality in covers are thin and hidden inside the cardboard that is within the fabric/leather linings.
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thanks... but what exactly am i looking at? or is it internal?
you reckon that it's the magnet that's causing this? funny, it was a cheap case, will run through a clip along the surface and check it out.
thanks
The sensor is internal. If you pass a magnet over that spot it will toggle the tablet screen on and off.
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hi ..just got my note 12.2 from pc world .. was actually undercutting amazon so couldn't resist
anyway ... the bottom of the screen about 3 inches in when you try to draw a straight line you get a curved line and in two directions so its almost forming a circle of some kind .. ive just tested my stylus and my girlfriends edge sylus and mine of my note and it is doing the same thing .. however when you use your finger the curving of the lines does not happen ... so its obviously stylus related at this point of the screen only
has anyone run into this problem and do they know how to fix it .... or do i need to take this tablet back to the retailer as faulty ?? does something need to be calibrated ?? i havent seen an option to calibrate
picture attached of what its doing
Are you're using a case that has a magnet? If the answer is yes, take it off.
The Spen uses a magnetic sensor. Anything with a magnet in it will interfere with the pen.
ShadowLea said:
Are you're using a case that has a magnet? If the answer is yes, take it off.
The Spen uses a magnetic sensor. Anything with a magnet in it will interfere with the pen.
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Thank you for your information on that one .. i take exposure would not cause any permanent damage as lots of cases are magnetic ??
of course thats annoying as i bought the case to protect the note .. from possible drop damage and now i cant really use it much when drawing on the note now ... this one has a bluetooth keyboard so was quite nice from amazon
anyway thanks a lot there my girlfriend and i were panicking .. lol
the magnets are a top flap magnet to keep the case shut with the keyboard and i think one at the back that holds the back stand in place
What case is it exactly?
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