yashsingh1/xdaforums huggingface dataset:
[Transformer TF300T Q&A, Help & Troubleshooting] Steveg10:
Replaced digitizer touch screen on Asus Transformer T300 but is not working

Hi, my asus transformer T300 screen cracked. So I replaced the digitizer with a brand new one. (Correct Model 5158n) Put everything back and all looks ok but the touch screen is not working at all. My tablet comes on and I can see the screen but I unable to touch anything on the screen. I opened the tablet back up and reconnected everything about 5 times but the touch screen still doesn't work. Any Ideas. When I navigate down to the developer options using the keyboard and select show touches, I get a load of white dots flying around the screen. What does this mean? Do I have a faulty digitizer or is there anything else I can try to get the digitizer touch screen to start working.

Many Thanks

Steve G
[Transformer TF300T Q&A, Help & Troubleshooting] georgeBoy2:
Hi Steve,

This looks very similar to what I experienced. I guess that an update to the touch screen firmware might solve your problem.

Check out my post with the steps I took. Just make sure to unlock, root and update your firmware

http://xdaforums.com/showthread.php?p=52894359
[Transformer TF300T Q&A, Help & Troubleshooting] minoguana:
Hi Steve.

I spend something like what happens to you. I installed several times the touch screen, but getting nowhere.

Even when you reinstall the driver for the touch on the tablet, was still failing. The screen was moving without touching one.

I had this idea: Touch brings two blades entering flanges. What I did was add a thin paper, cut to size, into the connector and then put the touch, closing it. This places greater pressure and responsive.

One tip, when you go to connect the touch, remove the 3 screws from PCB, disconnect the ribbon cable, and the battery is disconnected (next to the power button there is a small switch).

This way you can work best to connect well, and then put the ribbon cable, 3 screws and hit the little switch.

I hope you serve.

A greeting.
[Transformer TF300T Q&A, Help & Troubleshooting] Thomaswassenaar1011:
Sounds like faulty digitizer but,...

Hey steve, To me it sounds like a faulty digitizer but i want you to check the model number on the digitizer. After ordering my first one. 5158n fpc -1 06ww (Was what the digitizer i was supposed to recieve) I ended up receiving "5158n fpc -1 jk" This digitizer has problems with this tablet. I went ahead and replaced it with the G01 digitizer on ebay and used my method in post #797. Also order on ebay from a us shipper. Try to find the one with shipping from Springfield Missouri. I have personally ordered about 15 from this supplier and not a single problem.

Also i am assuming since the 5158n digitizer is rare. Whomever is supplying them is trying to get them out asap. So quality control goes way down. And price goes way up (Rare item) Hope this helps.
[Transformer TF300T Q&A, Help & Troubleshooting] QuestionsAreFun:
Which PCB is compatible with which digitzer

Heyo, sorry if this question has already been asked, but which PCB is compatible with which digitizer? Like if I had a G01 digitizer, which PCB would I need for it to be compatible? I am looking at the PCBs from asusparts.
[Transformer TF300T Q&A, Help & Troubleshooting] yuraterm:
Every Touchscreen PCB is compatible with every digitizer if you flash it with correct firmware.

Known digitizer models are 5158N FPC-1, 69.10I21.G01, 69.10I21.G03, i101fgt04.0
[Transformer TF300T Q&A, Help & Troubleshooting] demod_oz:
I went through the whole panel change procedure a few weeks ago, and while battling (due to the ghost touches) to get the firmware updated I found a slightly raised spot in the glass - AND THEN PRESSED IT HARD! After a fresh crack appeared in my new glass I realised how stupid that was! Turns out it was a slightly buckled bit of tape!

Anyway I ordered 2 more G01 digitisers (just in case), and just rigged it up to test. Have flashed the firmware, but I'm still getting random touches all over the place. Coils are all looking good. Firmware is recognised in the a

Before I go and replace the glass I'm just wondering if anyone has successfully just rigged up a digitiser and had it working ok?
[Transformer TF300T Q&A, Help & Troubleshooting] pyraxiate:
You have to install the firmware after swapping the digitizer. When you flash it the firmware does a calibration.
[Transformer TF300T Q&A, Help & Troubleshooting] demod_oz:
Ahhhh.... Thanks for the fast response!.. I'll give it another try tomorrow.
[Transformer TF300T Q&A, Help & Troubleshooting] QuestionsAreFun:
Yes I know, the issue is that I am fixing it for someone and they do not want it rooted. That is why I want to know if I could just buy whichever PCB would be compatible with a G01/G03 so I can do it without flashing.
[Transformer TF300T Q&A, Help & Troubleshooting] jed84:
I need some help.

Just trying to install touch screen firmware in Terminal Emulator.

It seems I installed wrong touch drivers before and when I'm trying to install 02-3011-4820.ekt

(command #touch_fw_update command -u /sdcard/02-3011-4820.ekt), I'm getting plenty of errors:

ERROR: GetAckData fail! res=1

Is it possible to install firmware in TWRP to avoid somer errors or is there any other way to flash proper driver?
[Transformer TF300T Q&A, Help & Troubleshooting] pyraxiate:
No problem. I had that issue initially too lol. Hope it fixes things for you. My tf300t is on its 3rd digitizer. Kids.....smh lol

---------- Post added at 10:00 PM ---------- Previous post was at 09:57 PM ----------

You are better off rooting and unrooting it. You can search on ebay for a specific board but It's cheaper getting the most common one and flashing it. Also as I stated earlier... the firmware does a calibration after you flash it. It could fix ghost touches.
[Transformer TF300T Q&A, Help & Troubleshooting] DataFrogman:
I have tried this but I am getting unknown id touch_fw_update?!
[Transformer TF300T Q&A, Help & Troubleshooting] yuraterm:
That means you have no root priviledges. You did't root your device.
[Transformer TF300T Q&A, Help & Troubleshooting] DataFrogman:
It is rooted, it runs cyanogenmod 10.2.1 and I have root permissions.
[Transformer TF300T Q&A, Help & Troubleshooting] pyraxiate:
Try from a rooted terminal on the tablet itself. Make sure to type su and hit enter before typing any commands.

Put the firmware files onto your external storage first.
[Transformer TF300T Q&A, Help & Troubleshooting] DataFrogman:
Ok I will be sure to do that

---------- Post added at 10:22 AM ---------- Previous post was at 09:54 AM ----------

I just did that and it gave me the error touch_fw_update: not found
[Transformer TF300T Q&A, Help & Troubleshooting] andrewnelson23:
The problem is you are on cm and the touch_fw_update command is not recognized. This is freaking annoying to fix, and I just did so yesterday. You need to flash stock SKU. After flashing stock SKU, you may not boot(this happened to me). Perform a cold reset. Do this by entering fastboot screen and going to the wipe data section. You will have to wipe data if you can't boot. I don't think there's a way around that... After wiping data and performing the cold reset, you should be able to boot. Next step, you have to root it. This was very hard for me as I had ghost touches, and also couldn't really use the touch screen at all, so twrp was out of the question. I used philz touch recovery. Clicked enter to reboot and then it prompted me, saying that the device had lost root and asking if I wanted to root it. I tapped the down arrow on my dock to select yes and then hit enter.(I actually had to try this several times since the ghost touches kept clicking things I didn't want clicked) It rebooted and I entered a shell and tested root and I had it. With that root, on the stock ROM, you can perform the touch_fw_update. Its a super annoying process, but it worked.
[Transformer TF300T Q&A, Help & Troubleshooting] jed84:
Please, can somebody help with finding this part somewhere?

Is there any other name for that (cant find anything on ebay)?
[Transformer TF300T Q&A, Help & Troubleshooting] yuraterm:
http://www.asusparts.eu/en/Asus-60-OK0GTC1001-C01
[Transformer TF300T Q&A, Help & Troubleshooting] pyraxiate:
On eBay look for tf300 digitizer board ( or tf300 SD board )
[Transformer TF300T Q&A, Help & Troubleshooting] ryantyre:
bricked

Hello guys and gals, so i have hard bricked my tablet and can only access apx mode. So of course i understand that without a prior backup made with NVFLASH i am probably out of luck.

With that said, i do have a question for a seasoned developer. I understand the nvflash blob has to be for "your specific device" but is there a way to say, use the blob from someone elses nvflash blob if you change the serial number on your device to the one that the blob came from? I thought it may be possible becase i saw the command in the "help" section in NVFLASH "cmd #38" "--internaldata" "used to flash the sku-info, serial-id,mac-id,prod-id"

so i thought it may be possible to kinda clone the device the blob came from so that you can use the blob file through NVFLASH

does any of this make sense?

im just trying to think outside the box here ( i have no clue how the blob files are generated or what nvflash looks for when flashing a blob)

has anyone used this command before?

PS - i know this is in the wrong section but none of the "bricked" threads have been touched for a while so i felt i might get some attention here (bad or good)
[Transformer TF300T Q&A, Help & Troubleshooting] pyraxiate:
I'm not sure about that but I do have the blobs to my tf300 if you have an idea how to modify them. Otherwise it's a relatively cheap fix ordering the whole logic board on eBay. Looks like 35 plus shipping.

Check out this item I found on eBay:

End time: Jul 23, 2014 1:38:27 PM

Item: ASUS Transformer Pad TF300T - 16GB Motherboard Logic Main Board PCB Rev 1.3G

URL: http://pages.ebay.com/link/?nav=item.view&id=231213038842&alt=web

Alt URL: http://www.ebay.com/itm/ASUS-Transf...d-Logic-Main-Board-PCB-Rev-1-3G-/231213038842

(Sent from eBay Mobile for Android)
[Transformer TF300T Q&A, Help & Troubleshooting] ryantyre:
thank you!!!

Thank you for the posting!

Definitely cheap!

i do not know how to modify it but i am willing to bet that someone must. I would love to get some input from some senior developers.

maybe this can be passed along? again, just thinking outside the box!

and thank you for the blob offer
[Transformer TF300T Q&A, Help & Troubleshooting] pyraxiate:
No problem at all. I think 40 bucks and a half hour of time is much easier than hacking the blob lol.
[Transformer TF300T Q&A, Help & Troubleshooting] ryantyre:
Agreed!

i agree %10000 and although i am taking your advice on getting a new board, i have now kind of made myself curious as to if this is possible (it must be!)
[Transformer TF300T Q&A, Help & Troubleshooting] jed84:
Thank you!

My last queston: is there only one version of Digitizer Board

and will it be compatible with any TF300 touch screen? (there is G01 touch and others)?
[Transformer TF300T Q&A, Help & Troubleshooting] pyraxiate:
You will likely need to flash it as per this thread. I've flashed mine a few times already. I would however ask whatever seller you are buying it from if it's blacklisted as far as rooting goes. I've heard of some boards not being able to have their bootloader unlocked.
[Transformer TF300T Q&A, Help & Troubleshooting] cooooooop:
Hello everyone, hopefully some of you smart folks can help me understand what might be going on with my TF300T. Any response is appreciated.

So, I bought a cheap TF300T locally, it said the touch was not working, but everything else was good and it came with a dock, so I thought good deal. After disassembling and reassembling, and flashing the stock firmware, I confirmed that there was indeed a hardware failure somewhere. After reading someone's experience about ghost touches (which I saw on my device) I decided to buy a new digitizer daughter board, I thought for sure this would resolve the problem since it seemed to work for this person and my issue appeared identical.

I got the new digitizer daughter board last week, swapped it into my tablet and ran the firmware update (my digitizer is G01, if that's relevant). I used this guide http://www.snart.com/replacing-tf300t-digitizer/ and the touch_fw_update command seemed to run successfully. However, there was still no change after all this. Still the same ghost touches (maybe not EXACTLY the same), and no touch response otherwise.

So, if you've made it this far, thank you for reading. My question for you smart folks here, is how can a digitizer that looks to be fine, actually be faulty? If the digitizer is not physically broken/cracked and the ribbon appears fine and is fully connected, can there still be something wrong? I feel like I've eliminated the daughter board as the possible problem, so the next step is getting a new digitizer, but I am hesitant because mine looks fine.

In the meantime, I have ordered a replacement for the silver flat cable that connects the daughter board to the main board, mine looks a little rough around the edges so I'm hoping that will be the solution, I'll update this thread with the news once I get to test it out.

Thanks for reading!
[Transformer TF300T Q&A, Help & Troubleshooting] pyraxiate:
There's a small fuse ( coil ) that pops on the main board. Look earlier in this thread under my name for the photo I posted on its location. You can either jump it with a bead of solder or solder in a new coil.

Be warned though that of you bridge it and make a mistake connecting / disconnecting the daughter board, you can fry the main board completely.

Always flip the service switch to off and unplug the battery before disconnecting any ribbons. Failing to do so is what causes the fuse on the main board to pop in the first place.
[Transformer TF300T Q&A, Help & Troubleshooting] cooooooop:
Thanks for the response, I will try this later today. I did make the mistake of disconnecting my original daughter board without flipping the service switch, not sure if I did any further damage though. I've been good since then, but haven't been disconnecting the battery, I'll be sure to do that also now. Thanks again.
[Transformer TF300T Q&A, Help & Troubleshooting] cooooooop:
Hi again. I took a look at that fuse that you mention and it looks like mine is not burnt out like the picture you posted earlier. Do you think it still might have been fried? Like I said, the silver flat cable that I have seems to have suffered some abuse, and I have a new one coming in the mail. I might just wait and try that first.

Here is a photo I took of the same area, sorry about the distortion, I had to use a magnifying glass to get a sharp image.
[Transformer TF300T Q&A, Help & Troubleshooting] pyraxiate:
You could try using a multimeter and testing the resistance.
[Transformer TF300T Q&A, Help & Troubleshooting] demod_oz:
Finally got around to trying it again. Swapped out the screen, put it all back together. Ran the firmware command - and the ghost was back. Not happy. start poking around checking the fuses, all seemed ok.

Had a bit of a ponder.. time to reflect, then I noticed it. little bloody white tabs on digitiser connectors. "No, it can't be" I say to myself. But it was. I hadn't (ever!) lifted them up. Hadn't read about people doing it either - probably skimmed it. Doesn't matter now, they were there. Lifted them up, and amazingly the tabs went in FURTHER. Pressed them back down again and powered her up. No touch, but the tablet was calm. I felt like I was close, the tension inside me was building. As per your suggestion - I ran the firmware command again. VIOLA! smooth and silky multi touch working. Couldn't be happier.

Thanks all for your help everyone!
[Transformer TF300T Q&A, Help & Troubleshooting] obiwankr:
I broke my tablet screen a year ago. I've been using a bluetooth keyboard and mouse with my repaired screen for a year. This outline made it possible for me to finally repair it. I wanted to add my notes because it didn't all work for me and I noticed some other people had problems. I followed all of the steps with a few modifications.....

Step 2.) Kingo root didn't work for me. Motochopper worked like a charm. I just followed some guide I found online. I don't remember which one. Sorry.

Step 5.) Go to google play store and download 2 programs. "Root Browser" & "Android Teminal Emulator"

Step 9.) Open teminal emulator and type

su (Press enter)

cd /system/etc/firmware/touch (Press enter)

ls (Press enter) (That is LS not is. I wasn't sure since l and i are confusing)

/system/etc/firmware/touch # touch_fw_update -u /system/etc/firmware/touch/02-3011-4820.ekt (Press enter) (I omitted /system/etc/firmware/touch # at the beginning because it wouldn't work with this line. It was a lucky guess)

I can't thank everyone enough for all of your posts and help. And the dude who assembled all the pieces together... THANK YOU! I have a tablet again! I can play Cut the Rope again!!
[Transformer TF300T Q&A, Help & Troubleshooting] cooooooop:
I got around to testing with a multimeter and the reading hovers around 1.0 ohm (multimeter set to 200 ohm resolution). I think that means it is working. If it was broken I think I would not get a reading at all, is that correct? Does 1.0 ohm sound alright?

I think it's now time for me to bite the bullet and buy a new digitizer, even though mine appears fine.

Any other comments or help from anyone would be much appreciated.

And pyraxiate, huge thanks for all your help already.
[Transformer TF300T Q&A, Help & Troubleshooting] larscn:
Think of the blob as a cryptographic key. It's unik to every motherboard. It's a nVidia security feature that Asus so kindly has activated for us. It's useless to try and hack it unless you are the nsa.
[Transformer TF300T Q&A, Help & Troubleshooting] Thomaswassenaar1011:
Thank you for updating this.

I appologize that i had "/system/etc/firmware/touch #" in there the "#" was supposed to be a break and being a technician. Sometimes i forget everyone doesnt know that. The beginning part was not supposed to be there. I think i will go edit that out of my post.

Thank you for the update. Kudos to you my friend.
[Transformer TF300T Q&A, Help & Troubleshooting] cooooooop:
That looks to me like you have a disconnected cable. Make sure you have everything in snug.

For anyone following from the last page, I got my new digitizer and it works great! There is hope :)
[Transformer TF300T Q&A, Help & Troubleshooting] QuestionsAreFun:
Hmmm

Hmmm, I removed the back and everything is double checked to make sure everything is connected all the way in, then restarted. Nothing :/ The only other thing I can think to do is a full reset, but that is my absolute last resort. If anyone has ideas it would be greatly appreciated :D
[Transformer TF300T Q&A, Help & Troubleshooting] larscn:
The update utility indicates that the firmware version is 0000....

Did you switch off the service switch and/or disconnect the battery? Seems to me like you probably have burnt coils on the motherboard.

Read this: http://xdaforums.com/showthread.php?t=2715459

Someone should make it a sticky post.... :-\
[Transformer TF300T Q&A, Help & Troubleshooting] cooooooop:
I wouldn't expect a reset to do anything, unfortunately. That looks like a hardware issue and if you have double checked the connections it could either be what was posted above (blown fuse, you should be able to see this clearly, it will be burnt out. I thought mine might be and took a look at it, it was normal and a new digitizer was the solution), or it could be a faulty cable (either the digitizer cable or the silver foil cable) or it could be the smaller daughter board has malfunctioned (the board that the digitizer plugs into, with the sd card).

Very important to always turn the service switch to off before doing any internal work on the tablet. Best of luck finding your issue.

Here is a link to a post with a photo of the burnt coil - http://xdaforums.com/showpost.php?p=39507302&postcount=119
[Transformer TF300T Q&A, Help & Troubleshooting] muskin:
screen

hey great work guys. I replaced my friends broke screen with the correct Asus Transformer TF300 5158N FPC-1 Version. She was complaining about it being slow and one finger print I had left on the screen. So me being a nut, I opened it back up and cleaned the screen and decided to put some 3M two side tape around the edges of the LCD.

Well big surprise when I turned it back on. Now I have all kind of bad lines and a black screen. Is this the LCD or is this a cable or digitizer for the screen.

Here is an image of the screen now.

http://oi57.tinypic.com/mloyep.jpg

Thanks
[Transformer TF300T Q&A, Help & Troubleshooting] boldnuts:
Did you turn of the service switch inside the unit before removing the screen?
[Transformer TF300T Q&A, Help & Troubleshooting] muskin:
nope did I fry the new digitizer or do you think it might be the lcd.

Thanks

---------- Post added at 08:01 AM ---------- Previous post was at 07:48 AM ----------

I guess the videos I watched on youtube did not say anything about the service switch. I guess I got lucky the first time i changed the board out with the correct digitizer and it worked..

who sells those mini hdmi to hdmi cables. bestbuy staples walmart.. just wondering. sorry for rambling on. i have been up since yesterday.

does bestbuy, staples or walmart sell these cables..

Now if I can get help on which part I messed up I can try to refix her tab.

Thanks

---------- Post added at 08:21 AM ---------- Previous post was at 08:01 AM ----------

I have an idea. I might go get a mini hdmi cable to hdmi and port it to the tv to see if the tablet is working and if it is the LCD. If it shows up correctly on the tv would it be the lcd, and if it shows up like I see on the tablet, it would be the digitizer.... hum..just wondering
[Transformer TF300T Q&A, Help & Troubleshooting] cooooooop:
I don't see how a bad/fried digitizer would create those screen artifacts, the first thing I would do is recheck all the cables (particularly the cable to the lcd screen from the main board). If that doesn't resolve the problem I think you might have done some serious damage and may need to replace the main board. Hope it works out for you.
[Transformer TF300T Q&A, Help & Troubleshooting] muskin:
I had a Dell Streak 5 that did that after it was dropped. It started to bleed out in the upper right corner, then took over the whole screen. This tablet did the same thing. I replaced the screen on the dell streak and it did the same thing.

So would you say it's the LCD is bad?

I'll check tonight when I get to work if all cables are secure and if I see any blow fuses. I have a 10x lens I can look through.

What really sucks is the replacement board work ok, she was complaining of slow responses, so I though I would add some 3M two sided tape to the LCD and I did. Everything went back together great with nothing breaking or popping.

This is the screen now. sucks

[IMG="screen"]http://oi57.tinypic.com/mloyep.jpg[/IMG]

Just strange.

I wish somebody could verify the LCD or something else was bad before I start buy parts.
[Transformer TF300T Q&A, Help & Troubleshooting] seoded:
Still don´t know what to buy

Hello people

After reading 87 pages i still do not know for sure what digitizer i should buy.

I´ve attached a picture of the ribbon to see if anyone can tell me: it´s this one, no doubt.

I think it is the 5158n but there is also 5158n fpc-1.

HEEEEEEELPPPPPPP!.

Another thing...from the picture can someone tell me if i also need the LCD, or just the touch.

Thanks
[Transformer TF300T Q&A, Help & Troubleshooting] larscn:
I think it's the one just called "white label". Anyway, you could just order a GO1, root and update the firmware.

ps. Hope you turned off the service switch before you disconnected the digitizer cable....

update....upon a second look I realize you've cropped out the part of the digitizer cable where the type is printed! Could also be a 5158.

About the LCD, it's impossible to say unless you turn the screen on, but you should wait to do that until you've replaced the cracked digitizer.