BAH! I DROPPED IT! How to diagnose? - Asus Eee Pad Transformer Prime

So after my daily workout (watching "Breaking Bad" on the tablet) I managed to let my trusty 201 slip from my hands while taking it off the thin little ledge on my exercise bike console.
BAM, landed right on its corner on the bike's steel support bar.
Now it appears to be functional - except for the small point that the screen don't come on anymore.
Since I cleverly just put a "pattern" lock on it before maiming the poor thing, I can't get it unlocked reliably, but when I press the screenshot button on the keyboard it makes the shutter-click sound.
And I am getting notification bleeps when new mail comes in.
But I'm blind.
I have taken some steps in the past to open it, I did the Wifi antenna thing and tried to get the GPS working (bahahaha what a waste of time THAT was!)... and I've repaired a number of other phones and crap... so I'm not unskilled in this arena.
And I'm sort of optimistically hoping it's just a loose cable or something. There's only the smallest dent in the casing in the corner. No cracks in the screen or anything.
But has anyone gone down this road and maybe has some pointers as to what to look out for? Is there a backlight module that might have popped and just needs replacing?
I'm very sad, this little guy has been my stalwart companion for many, many moons...
Thanks for any input.
R

rprussell said:
So after my daily workout (watching "Breaking Bad" on the tablet) I managed to let my trusty 201 slip from my hands while taking it off the thin little ledge on my exercise bike console.
BAM, landed right on its corner on the bike's steel support bar.
Now it appears to be functional - except for the small point that the screen don't come on anymore.
Since I cleverly just put a "pattern" lock on it before maiming the poor thing, I can't get it unlocked reliably, but when I press the screenshot button on the keyboard it makes the shutter-click sound.
And I am getting notification bleeps when new mail comes in.
But I'm blind.
I have taken some steps in the past to open it, I did the Wifi antenna thing and tried to get the GPS working (bahahaha what a waste of time THAT was!)... and I've repaired a number of other phones and crap... so I'm not unskilled in this arena.
And I'm sort of optimistically hoping it's just a loose cable or something. There's only the smallest dent in the casing in the corner. No cracks in the screen or anything.
But has anyone gone down this road and maybe has some pointers as to what to look out for? Is there a backlight module that might have popped and just needs replacing?
I'm very sad, this little guy has been my stalwart companion for many, many moons...
Thanks for any input.
R
Click to expand...
Click to collapse
I have read some similar stories in the past and some times it has just been a cable that has dislodged inside.. Obviously this can vary but I would first try plugging in a hdmi cable to your TV and making sure that the graphics chip is still working.
I'd imagine it would be and your next step would be to open it up and start unplugging and replugging everything you can.

flumpster said:
I have read some similar stories in the past and some times it has just been a cable that has dislodged inside.. Obviously this can vary but I would first try plugging in a hdmi cable to your TV and making sure that the graphics chip is still working.
I'd imagine it would be and your next step would be to open it up and start unplugging and replugging everything you can.
Click to expand...
Click to collapse
Aha! The hdmi cable. Hadn't occurred to me.
I love this forum.
(Also been using androwook for quite some time, with Data2SD... big fan - very smooth. would hate to lose and/or have to reinstall from scratch though!)

flumpster said:
I have read some similar stories in the past and some times it has just been a cable that has dislodged inside.. Obviously this can vary but I would first try plugging in a hdmi cable to your TV and making sure that the graphics chip is still working.
I'd imagine it would be and your next step would be to open it up and start unplugging and replugging everything you can.
Click to expand...
Click to collapse
Well - this was a fantastic suggestion, since the HDMI gave me a perfect picture and the thing is (as thought) fully functional.
It was interesting trying to judge where to tap on the tablet to hit certain things on the screen, though.
This is actually quite a load off, since worst case I can get a new screen from ebay.
Thanks again, flumpster - I am much relieved, and you are a god among men!

rprussell said:
Well - this was a fantastic suggestion, since the HDMI gave me a perfect picture and the thing is (as thought) fully functional.
It was interesting trying to judge where to tap on the tablet to hit certain things on the screen, though.
This is actually quite a load off, since worst case I can get a new screen from ebay.
Thanks again, flumpster - I am much relieved, and you are a god among men!
Click to expand...
Click to collapse
Here you go mate. I knew I had seen it before.
http://www.youtube.com/watch?v=yRLcxI2JddQ#t=411
This is for the original transformer but they should be nearly the same.

flumpster said:
Here you go mate. I knew I had seen it before.
http://www.youtube.com/watch?v=yRLcxI2JddQ#t=411
This is for the original transformer but they should be nearly the same.
Click to expand...
Click to collapse
Nice!
I have my fingers crossed.
So do my kids, who are going into "Minecraft PE" withdrawal at the moment.

Well, after popping the case, I've disconnected and reconnected everything available - no change in behavior.
I'll try unsticking the LCD and see what else is in there, but it's looking like a more aggressive repair will be in order.
V.sad
PS there's also this vid I found: http://www.youtube.com/watch?v=JpJs_OI8joA

Arright. Here's my logic. Tell me where I'm wrong.
The video works - the HDMI proved that.
The tablet works - ditto.
Being able to touch and use the tablet shows me that the digitizer is ok, too.
I've reseated all the connectors, but I still can't get a picture.
Therefore, it's the LCD that's gone bad.
Therefore I should order a new LCD.
Right?

rprussell said:
Arright. Here's my logic. Tell me where I'm wrong.
The video works - the HDMI proved that.
The tablet works - ditto.
Being able to touch and use the tablet shows me that the digitizer is ok, too.
I've reseated all the connectors, but I still can't get a picture.
Therefore, it's the LCD that's gone bad.
Therefore I should order a new LCD.
Right?
Click to expand...
Click to collapse
Hmmm.. Sounds logical but it could be the power going to the screen or something else that connects the screen. Or does the power etc control the digitizer also ?

flumpster said:
Hmmm.. Sounds logical but it could be the power going to the screen or something else that connects the screen. Or does the power etc control the digitizer also ?
Click to expand...
Click to collapse
Well, there's one (and only one) ribbon cable feeding the LCD - and two going to the digitizer.
News, though - I pulled out the battery and found another ribbon cable tucked underneath to reseat.
After that, I put it back in and hooked up the LCD - and it came up!!
Sort of, anyway. It lit up enough to show me the spiderweb of cracks all along the bottom edge.
(I think I found my problem.)
Now off to eBay to shop for a replacement... I hope I didn't munge up anything else in there while I was mucking around!

rprussell said:
Well, there's one (and only one) ribbon cable feeding the LCD - and two going to the digitizer.
News, though - I pulled out the battery and found another ribbon cable tucked underneath to reseat.
After that, I put it back in and hooked up the LCD - and it came up!!
Sort of, anyway. It lit up enough to show me the spiderweb of cracks all along the bottom edge.
(I think I found my problem.)
Now off to eBay to shop for a replacement... I hope I didn't munge up anything else in there while I was mucking around!
Click to expand...
Click to collapse
See if someone is selling a bricked Tf201 of TF300 that you can get the screen out of.

Related

Question about powering an HTC HD2...

Is it possible to power an HTC HD2 without a battery or the back cover? I found one about an hour ago in my downtown area, missing a SIM card and missing the microSD card. As noted it doesn't have a back cover or a battery, so my intention was to attach a "standard" 5V/1A cell phone battery charger. I figured out from a picture of the battery that if I've got the HD2 flat on the display and I'm looking at the back, the positive terminal will be the one on the left but, when I attach the power supply (which I tested before this attempt, it works) leads using micro-alligator clips and push the power button (front of display, button furthest on the right, I think, never used one of these HD2's before) I get no response.
Now, the question is either a) am I not getting any response at all because the HD2 can't be powered up in this manner because there's no back cover or b) it's more likely to be completely toast because of the damage it apparently suffered in the drop that shattered the glass. The only damage (aside from the glass) is a very tiny scrape/scuff mark on the top right corner of the bezel - obviously that's where it hit the ground.
I don't own any of these apparently micro-USB style connectors (or is it mini-USB, I can't figure out which is which I suppose). Bleh, I just looked at a pic I found with Google Images, apparently it IS a micro-USB connector.
All blabbering aside, even if I had such a connector or a power supply using such a connector, is the phone going to even power up without a back cover on it or battery inside? I know a lot of devices become totally disabled when the back cover is removed (as my Dell Axim X51v does; as soon as I even throw the lock switch to unlock the back cover that disables the device totally.
Anyone able to provide some tips or suggestions? I have no way of knowing who it belongs to so I'm claiming it, and if I can verify it might work or does still function I might be willing to put some money into getting the glass/digitizer replaced, a new battery, power adapter, etc.
Anything at all would probably be quite helpful.
Thanks...
The HD2 works without back cover!
The HD2 doesnt work without battery...!! I've never heard of a mod to enable switching it on through micro-usb.
Be carefull you could be scammed...buying a phone in that state, because of the hit some other components may be damaged!! It depends on the price and money you're willing to risk!
no problem with powering on without the backcover. did that many times before.
but i guess its not possible without a battery...
DN41
Ah, ok, so the fact that there's the two metal 'dots' on the HD2 that apparently become a connection when the metal battery cover is in place don't affect powering it up, but no battery keeps it dead? Hrmmm...
Ok, if someone that owns an HD2 can confirm that it becomes very useful info. Take the back cover off, take the battery out, and tell me if plugging in a micro-USB cable (either from a computer USB port or from the AC adapter) allows it to function at all, and then try the same thing with the cover on (don't put the battery in, however).
So there's 3 possibilities:
1) It'll work off the micro-USB power with no battery and no cover
2) It'll work off the micro-USB power with just the cover installed but no battery
3) It'll work off the micro-USB power with no cover but with a battery installed
and actually the fourth possibility which doesn't matter in my case:
4) It'll work off the micro-USB power with the cover and the battery installed
Dammit I hate it when I find stuff like this and can't get it functional.
Again, thanks for any suggestions - and I didn't buy this phone, I found it a few hours ago, on the ground as I was walking home. I wouldn't buy something in this cosmetic condition unless I knew it was working even in spite of the cracked glass. I've owned iPhones with horribly shattered glass on them but they still function, even all the multitouch functionality is still working - that's my hope here, that this device will still work just fine and if it does then I'll pay to replace the glass/digitizer.
Thanks
Edit:
I think I just realized that the metal contacts on the inside of the back cover and those 'dots' could be because the HD2 is using that battery cover as a Wi-Fi antenna, plate-style antenna.
I just tested it for you. Without the battery in there is no starting it, period.
Might I suggest though that you ask around and find a mate with a microUSB, (you must have someone that has one), and plug it in when the battery contacts are jumped. It will probably work that way. I'm not going to try it because I have a perfectly good phone and have always mistrusted elec-trickery...
those spring loaded studs have been the subject of much discussion, with no definitive answer,, stop the cover rattling, grounding plate for the antenna, remnants of an unreleased car kit,,, who knows. certainly signal doesn't appear diminished with the cover off, and on the inside of the cover there is no coating on the metal where they connect, indicating a signal being passed so who knows.
i suspect simply attaching power to two contacts isn't enough because the third contact is expecting a signal of some kind? perhaps a connection from the battery charge protection circuits?
you could always buy a cheap copy battery from ebay, and just resell it if it doesn't work, or run a scam on your insurance with it? (did i just say that out loud??)
I'll say this again: I found the phone on the ground on the side of the street while walking home a few hours ago.
I don't use T-Mobile service and I have no intentions of using it as a phone; I already have a phone so I was going to use it as a portable media player sorta like an iPod touch if I can verify it works 100% and just needs a battery/back cover/replacement glass and digitizer. That's my intention at this point.
And I was thinking that yes it won't work at all without a battery so, thanks again for the info. I'll head out this morning to a T-Mobile store (actual T-Mobile and not a reseller) and see what they can tell me. Surely they'll have a battery/back cover and potentially an AC adapter to verify if it's 100% dead of somewhat functional even in spite of the busted glass.
Let's hope it works...
what about searching the owner?
DN41
Well, let's see:
- I can't power it up
- It has no SIM card
- It has no microSD card
- The only way to track the owner would be using the IMEI and I'd have to go to a T-Mobile store to do that, when that's done and they get the number, if the phone was stolen and then dumped in the trash/on the street where I found it, they call the police and I get in a bit of trouble for no good reason
That pretty much covers it.
okay, you're right...
i cant imagine how it landed there...
who would throw it just away?
sure that its a real phone and not a dummy?
DN41
DN41 said:
okay, you're right...
i cant imagine how it landed there...
who would throw it just away?
sure that its a real phone and not a dummy?
DN41
Click to expand...
Click to collapse
i was in a thread yesterday where some guy talked about how he dropped his phone by accident whilst 'driving along with it in his hand, with his arm out of teh window', so yea, some people are , , well, insert your own noun here
oh no...how can you hold your arm out of the windows with a 500€ phone in your hand?
i just cant understand some people...that doestn go in my mind...
DN41
samsamuel said:
i was in a thread yesterday where some guy talked about how he dropped his phone by accident whilst 'driving along with it in his hand, with his arm out of teh window', so yea, some people are , , well, insert your own noun here
Click to expand...
Click to collapse
I thought the same!
br0adband said:
they call the police and I get in a bit of trouble for no good reason
Click to expand...
Click to collapse
Not really mate. I found an iphone 4 yesterday and managed to get it back to its rightful owner. Took a couple of hours out of my day but what else could i do?
sike222 said:
Not really mate. I found an iphone 4 yesterday and managed to get it back to its rightful owner. Took a couple of hours out of my day but what else could i do?
Click to expand...
Click to collapse
Well, Yeah, with an iPhone 4 what else WOULD you do if you don't want the surgery to be able to use it! LOL
Also think if it was your phone! I'd be absolutely gutted, and very glad to get it back. But maybe it's unregistered (through the IMEI) or not been reported as missing.
In the UK (don't know about elsewhere) if you report that you found something to the police (I found a £50 note) and no one can show that they own it then it's yours after about 28 days.
Unless you have really dumb cops then you shouldn't get into trouble if you take it in!
On the other hand you may find the battery and/or cover if you look carefully in the area where you found the phone.
Sam.
br0adband said:
Ah, ok, so the fact that there's the two metal 'dots' on the HD2 that apparently become a connection when the metal battery cover is in place don't affect powering it up, but no battery keeps it dead? Hrmmm...
Ok, if someone that owns an HD2 can confirm that it becomes very useful info. Take the back cover off, take the battery out, and tell me if plugging in a micro-USB cable (either from a computer USB port or from the AC adapter) allows it to function at all, and then try the same thing with the cover on (don't put the battery in, however).
So there's 3 possibilities:
1) It'll work off the micro-USB power with no battery and no cover
2) It'll work off the micro-USB power with just the cover installed but no battery
3) It'll work off the micro-USB power with no cover but with a battery installed
[snip]
Thanks
Edit:
I think I just realized that the metal contacts on the inside of the back cover and those 'dots' could be because the HD2 is using that battery cover as a Wi-Fi antenna, plate-style antenna.
Click to expand...
Click to collapse
I think those contacts are just to ground the back cover to stop it causing interference. It doesn't seem to affect the phone if I don't have it on or am using the plastic cover with my big battery.
On a similar theme, does anyone know if it is possible to power the HD2 from the micro USB supply while I swap batteries. I don't want to have to do a soft reset which loses what you are doing. But I'm worried that without the battery to absorb the power there is a risk of damaging the circuits?
I don't want to just try it because I already blew my main board by powering the USB through a cheep adapter and a Nokia charger that supplied too much power and had I to get it repaired/replaced. I'm hoping someone already knows
Sam
samsamuel said:
i was in a thread yesterday where some guy talked about how he dropped his phone by accident whilst 'driving along with it in his hand, with his arm out of teh window', so yea, some people are , , well, insert your own noun here
Click to expand...
Click to collapse
did we ever get an answer as to why that, im going to select the noun "twat" was dangling his hd2 out of the window @ 40mph??
I need closure on that one.....

need your opinion on what my problem is.

ok so i have a tmobile tp2 and been having it since the first week it was released.
for the pass couple of days the call, home, and back buttons wont function like they need to.
also when i slide my keyboard up the screen goes completely black even when i close my keyboard, the only way to fix it somewhat is to keep pushing the sleep/wake button untill it turns back on.
my guess is that maybe something like a cable became loose and is causing it to have these problems, and i just wanted to hear what you guys have to say about it, or what you think the problem is and what you would recommend to fix it because i cant afford to buy a new phone for quite awhile.
Posting in the Accessories forum might not be your best shot at an answer.
lilchicano said:
also when i slide my keyboard up the screen goes completely black even when i close my keyboard, the only way to fix it somewhat is to keep pushing the sleep/wake button untill it turns back on.
Click to expand...
Click to collapse
Sounds like an app running to me. Even File Explorer (when searching the Windows folder) can cause my phone to hang for a long time. I would check in task manager to see if something is running. You can also try and app called "Clean Ram", it works great. The other option is a hard reset, to ruke out software issues. It could be harware, but I doubt it.
Miami_Son said:
Posting in the Accessories forum might not be your best shot at an answer.
Click to expand...
Click to collapse
Very true.
It's likely a loose cable as you presumed. Hopefully you still have time left on your warranty.
I hate to be the oen to say it, but it sounds like your ribbon cable is going.... My son had the same thing happen on his Kaiser/Tilt (Grandpa to this Phone)... It started like you said... then got worse over the matter of a few weeks... His screen woudl only work when it was closed... the buttongs on the screen housign stopped working properly... then his memorycard reader (it was in teh screen part on that phone) went nuts... got to the point where that phoen was basically useless... I hope that isn;t your problem, but it sounds like it..
Teej53214 said:
I hate to be the oen to say it, but it sounds like your ribbon cable is going.... My son had the same thing happen on his Kaiser/Tilt (Grandpa to this Phone)... It started like you said... then got worse over the matter of a few weeks... His screen woudl only work when it was closed... the buttongs on the screen housign stopped working properly... then his memorycard reader (it was in teh screen part on that phone) went nuts... got to the point where that phoen was basically useless... I hope that isn;t your problem, but it sounds like it..
Click to expand...
Click to collapse
yeah i can pretty much say that it is the cable since i could still slide my keyboard but the screen just looks fuzzy like and when i close it, it takes time to adjust back to normal. so basically now its just an all touch screen phone to me now... sort of sucks since i miss using the keyboard so much.
and yeah the buttons got worst now to a point where none of them worked but somehow the back button started working again so thats the only button that does work now.
and a new problem started occuring in the last few days, the screen would turn on by itself with even a slight bump around where the battery is located, it really sucks for me cause it kills my battery faster and it just starts opening up random apps while its in my pocket.
I would like to hear what finally happened. People don't forget we are using WM phones. So no matter what the problem, hard reset before deciding!
schumifer1 said:
I would like to hear what finally happened. People don't forget we are using WM phones. So no matter what the problem, hard reset before deciding!
Click to expand...
Click to collapse
wow super late response to this.
but my final verdict is that it was the flex ribbon cable that is the issue.
my TP2 doesnt even show anything no more, its still functional but you just cant see whats goin on with the screen because its like its turned off.
it stopped working on me on dec 25,2010 (what a great present from the phone, huh?) to how i described it.
so now im using my sisters old HTC dream, but even this one is starting to have an issue with the ribbon cable too! i just get bad luck with these phones now i guess.
edit: oh yeah i still have my Rhod210 just sitting on my desk till i get it fixed... oh how i miss my TP2!
Another late response then
Fixed it yet, have you?
this occasionally happens to my phone too, that it, the screen blanks out sometimes. the cause in my case is pocket lint. since it's hayfever season, i carry tissues in my pocket which kind of disintegrate to confetti after a while. while my tp2 is in my pocket, these tissue particles tend to get in behind the ribbon cable and cause some kind of blockage. by just blowing in around the ribbon cable area, it tends to clear out those fluffy bits and the screen is working again. so don't carry tissues in your pocket with your tp2
schumifer1 said:
Another late response then
Fixed it yet, have you?
Click to expand...
Click to collapse
i actually took the time to open up the touch pro2 all the way today for a full diagnosis on it, and i was right. it was the cable. where the cable is exposed when it tilts, it looks like it sort of got stripped around that area. im not sure how but it left part of the cable exposed which im guessing is whats causing it to have the issue. i was taking a couple of pictures as i was disassembling it, but i forgot to take a picture of the cable itself to show you what i mean. maybe ill disassemble it again tomorrow so i can take a pic! =)
but yeah im still using the g1, and i finally fixed it! (ended up bricking a g1 so i used the other as replacement parts on it) but hopefully not for long cause graduation is tomorrow for me, and i MIGHT end up getting a new HTC phone as a graduation present from the family. so i hope that does happen!
ok so i reopened the touch pro 2 and took a pic of the cable to show you what i ment.

Screen on my Pime is dead, what are my options?

The other day, I went to turn on my Prime and the screen didn't come one, so I thought the battery was dead. But even after charging it overnight, the screen still didn't come on, so I took a closer look and figured out that the tablet is powered on, but the screen is entirely black.
I know it's on because it makes the tone when you plug in or remove the power cable, and when I connected it via USB to my Win7 machine, it immediately installed the drivers and correctly identified it as a Transformer Prime.
So basically I have a running tablet with a black screen; no boot animations or text, just nothing. I would assume it's a hardware problem rather than software, unless anyone out there has a better idea.
I bought it used on Ebay, so I know I'm probably SOL in regard to warranty, but will Asus fix it for a fee? Or is there a market for mostly-bricked tablets out there?
Thanks
Hmmmm...motherboard could have died. I'd at least check with Asus, but barring that id open it first to make sure the LCD ribbon inside never came off.
As a final option you could let someone with a busted LCD but working prime try it out.
Have a look at the post by youngnex in the RMA Question thread.
http://forum.xda-developers.com/showthread.php?p=33281353
I'd say send it in and see what they say. But then I'm biased as I bought mine on eBay too and want to know! Lol
Seriously, though, for $20 I'd send it in to see.
Sent from my Transformer Prime TF201 using xda app-developers app
Cool, thanks for the info. A loose cable would explain it, but I'm not too keen on opening it up. I'll look around for instructions on how to do it, but if it seems over my head I guess I'll try to send it back and see how it goes.
Kennedy808 said:
Cool, thanks for the info. A loose cable would explain it, but I'm not too keen on opening it up. I'll look around for instructions on how to do it, but if it seems over my head I guess I'll try to send it back and see how it goes.
Click to expand...
Click to collapse
Might want to start here:
http://forum.xda-developers.com/showthread.php?t=1479664
Have you actually tried to reboot it by holding down the power button for 10s? My i9000 sometimes does this and a reboot always fixes it.
So, the screen doesn't light up at all? Not even any edge lighting?
In that situation, I'd be connecting it via HDMI cable to an external HDMI screen. You'll need to get a micro-HDMI adapter in order to do this. You can get them from monoprice.com pretty cheap ($2ish).
Opening your prime isn't hugely difficult. There's videos on the internet on how to do it. The real key to opening it is that there are locks that hold the screen down that you need to slide open -- they're under the rubber stoppers that cover the docking station holes.
Now, changing the LCD is a HUGE, difficult pain.
Yes, I've tried to reboot it with a long power hold. I get the quick vibrate after about 10 seconds, but nothing at all on the screen.
It does sound like it might be just the LCD ribbon, so maybe I'll try to open it up this weekend.
For the sake of future Googlers, I wanted to post an update saying that I went ahead and opened it using the instructions linked in the post above, and was able to re-seat one of the ribbon cables, and everything works fine now. Thanks to everyone for the help.

So, I sat on my tablet and bent it....Still works

So last night was messing with my TF201 and got up to go unload the dishwasher, so I threw my tablet in my computer chair (screen down). I came back 5 minutes later and sat down (it was dark in my computer room) - it didn't take long to realize I was sitting on something hard, then I realized I was on my tablet and I jumped up. It all worked fine when I turned it on, so I thought I was lucky and got out unscaffed.
I am now at work today and just went to plug in my tablet to charge it and noticed the little metal strip above the charger is cracked and bent in at a "V"??? (I tried bending it back, but it snapped off about a 1 inch strip)...... Upon further inspection, my whole tablet is slightly bent (screen is bent up in middle).
I tested everything again and It all works fine (charges, camera works, ect...), but I am wondering if I should try to bend it back or just leave it as is since it all works fine? I'm just afraid it's putting extra tension on the screen and will make it more fragile and pron to breaking..... But then again, trying to bend it back may break it too.
I've probably answered my own question (leave it alone), but wanted to see what you guys thought?
Thanks, Jason
Hi, if I were you I wouldn't push it From my experience, every time I tried fixing something that wasn't entirely broken, I just damaged it further. Just treat the tablet more carefully in the future and enjoy the experience.
roccodaone said:
Hi, if I were you I wouldn't push it From my experience, every time I tried fixing something that wasn't entirely broken, I just damaged it further. Just treat the tablet more carefully in the future and enjoy the experience.
Click to expand...
Click to collapse
That's kind of what I was thinking too.... Thanks!
tele_jas said:
That's kind of what I was thinking too.... Thanks!
Click to expand...
Click to collapse
Great minds...

[Q] Disable touch screen completely

Hello folks,
I'm guessing at whether or not this is the right forum for this, please feel free to move it if I am wrong.
I have an Asus Transformer Infinity with keyboard dock that is out of warranty and has started "ghost touching" (a common problem with the digitizer). It renders the tablet pretty much unusable due to the constant touches on screen. I'm wanting to completely disable the touch screen and use this as a netbook now. I can get away with that since I have the keyboard dock. I'm up for any solution, including physically disabling the digitizer (if anyone can tell me conclusively which of the cables inside to disconnect).
I've done some searching and come up with build.prop modifications. The ones I have tried thus far have been ro.product.has.touch.screen=false, and ro.product.max_num_touch=0. (telling the tablet there is no touch screen, and that 0 concurrent multitouches are allowed, respectively).
In both cases, I restarted with no discernible effect.
Is there another build.prop variable I could try setting? Or perhaps an app that runs at boot and disables screen touches?
As an aside, if anyone knew of a way to calibrate my screen to induce a deadspot at the coordinates of the ghost touch (it's very consistent in a 1 inch square area, that would probably be the best.
Thanks for any help on this! I love my tablet and am hoping I can get it to at least marginally useful again!
Running Asus Transformer Infinity TF700T with Crombi-kk 4.4.2, have root access, knowledgeable with terminal (and how to edit build.prop from the terminal)
Hi wmdaricthompson,
I don't have an ASUS Transformer to try but a couple of weeks ago I did switch a digitizer and LCD on an IPhone. It should be just a matter of disconnecting the 2 parts of the ribbon cable that go to the digitizer. I don't have enough posts to give you a picture but if you google "asus transformer digitizer" and look at images you should be able to find pictures pretty quick. It is an orange ribbon cable than splits at the end into 2 separate cables. I don't know how hard it is to access this but if it is indeed because the hardware for the digitizer is malfunctioning this should fix it. Re-plugging in this cable (take off and then put back on) may even give you the digitizer back depending on if your issue is based on a wire connection problem.
Good luck and be careful taking your tablet apart (if you decide to that is).
Michael
PS - there is a youtube video called" How to Open and Fix Asus Tablet" by tampatec that shows you how to open your ASUS Transformer up.
bridgeofstraws said:
Hi wmdaricthompson,
I don't have an ASUS Transformer to try but a couple of weeks ago I did switch a digitizer and LCD on an IPhone. It should be just a matter of disconnecting the 2 parts of the ribbon cable that go to the digitizer. I don't have enough posts to give you a picture but if you google "asus transformer digitizer" and look at images you should be able to find pictures pretty quick. It is an orange ribbon cable than splits at the end into 2 separate cables. I don't know how hard it is to access this but if it is indeed because the hardware for the digitizer is malfunctioning this should fix it. Re-plugging in this cable (take off and then put back on) may even give you the digitizer back depending on if your issue is based on a wire connection problem.
Good luck and be careful taking your tablet apart (if you decide to that is).
Michael
PS - there is a youtube video called" How to Open and Fix Asus Tablet" by tampatec that shows you how to open your ASUS Transformer up.
Click to expand...
Click to collapse
Thank you for the information!
I have already opened the tablet once, and saw that cable, I wasn't sure if I would lose any element of the image as well, so I didn't pull it without getting some confirmation first (if I accidentally break a cable clip, I don't want to seriously regret it).
I'll try plugging/unplugging a few times to see if I get function back, and if not, I'll just lose the touch.
Thanks again for your reply!
(I'll post up here the results to confirm for any who are curious/googled their way to this thread)
wmdaricthompson said:
Thank you for the information!
I have already opened the tablet once, and saw that cable, I wasn't sure if I would lose any element of the image as well, so I didn't pull it without getting some confirmation first (if I accidentally break a cable clip, I don't want to seriously regret it).
I'll try plugging/unplugging a few times to see if I get function back, and if not, I'll just lose the touch.
Thanks again for your reply!
(I'll post up here the results to confirm for any who are curious/googled their way to this thread)
Click to expand...
Click to collapse
Two thumbs up. Disconnecting the two amber cables from the screen disabled the touch capacity without impacting this picture at all.
Thanks again!
Thanks
wmdaricthompson said:
Two thumbs up. Disconnecting the two amber cables from the screen disabled the touch capacity without impacting this picture at all.
Thanks again!
Click to expand...
Click to collapse
Hi wmdaricthompson. Firstly I realize this is an old thread but thanks for the info. Just a few questions if you can remember. I also have the dock and have ghost touches making the tablet quite unusable so am thinking of doing your fix. When you disconnected the touchscreen cable did you just then leave it loose inside the tablet or did you remove both ends? The end from under the screen near the dock pins appears glued on rather than using clips.
Cheers
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