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Quad-core 10.1" Android tablet with docking keyboard.

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Replaced screen and digitizer, but touch doesn't work

My son's Asus T300 had a cracked screen and wasn't responding well to touch. So I purchased the replacement parts. I replaced the parts. I put the think ribbon back the one next to it with the tiny wires connected. But touch doesn't seem to work.

is there anything else I can try? Is there a software thing I have to do in order to get it to recognize the new hardware?

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I replaced a screen and now there is a cursor jiggling around in a small selection frame in the upper-right region of the screen. Device Manager says everything is fine.

anyone else got that? i definately don't want to jump a fuse if that's not the problem.

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I have the same problem. X202E Replaced digitizer 2 X replaced digitizer cable & ribbon connection board that attaches to the digitizer. It appears that the digitizer is being depressed in multiple locations in the upper to mid right potion of the LCD. I'm lost? I looked to see if anything was there that might be "warping" the digitizer but I see nothing. Any ideas?

I do work on laptops constantly but this is my first foray into touchscreen repair.

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hye, I need the picture of the PCB Board to know where is the microfuse of it, coz the touch screen of my tf300t doesn't work. please help me to solving my problem. i hope you send me the link where i foud it. thanks a lot for helping. gurigjiri

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Hi,

I have a HP PAVILION X360 and I smached the lcd and digitizer and replaced both, but i replaced the digitizer with a non-touch digitizer but I was wondering if I replaced the digitizer with a touch digitizer would the touch start working or not.

-THX-

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Oh i forgot to post the fix to this issue.

I was so happy when i found an answer. There was this forum with somewhere near 80 pages of answers and comments. In the middle of it was a solution to repair a small micro fuse located just below the cable that goes from the main board to the digitizer board. If you notice carefully it can get burnt.

This happens when the unit is not powered down and the digitizer is detached or disconnected. I could not power mine down so i thought because the digitizer was unresponsive to touch. But what i did not know is there is a shutoff switch near the power button. its a slide switch.

So once i figured out what the issue was i ran a super fine wire from one side of the micro fuse to the other and soldered it in. It was tough but it worked!!! like a champ.

Hope this helps any with this issue. I spent a lot of time and money when it was just simple fix.

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Wish there was a way to attach a picture to this fourm, https://www.dropbox.com/s/ajmnqjciis1wi5...

Is this the micro fuse ??? used my multi meter and got OL across this the one above had connectivity. Used Radio Shack conductive wire glue to bridge the 2 solder connections over the top of the component.

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Thank for the tips. But I wasnt able to locate that micro fuse you mentioned. Can you please show it in the pic?

The above comment showing the pic doesnt match my tf300t pcb.

Can you please help us?

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hye Mark Mata, I have the asus transformer tf300t, and i have the same problem too. it's possible to send me a photo to understand the exactly position of micro fuse, and repaire them??? please help me. thanks gurigjiri

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hye mark, I need the picture of the pcb, to soldering the micro fuse and adjuste the touch screen of the tf300t asus transformer. please help me. send me a picture. i hope you are available to helping me. i waith your answer. gg

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hye, I need the picture of the PCB Board to know where is the microfuse of it, coz the touch screen of my tf300t doesn't work. please help me to solving my problem. i hope you send me the link where i foud it. thanks a lot for helping. gurigjiri

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http://forum.xda-developers.com/showthre...

There is a picture in this link of the coil location. I forget what connector that is but im sure you can figure it out by how many pins are in the picture.

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posted by graphdarnell on page 91 of this link - picture of coil

http://forum.xda-developers.com/showthre...

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yuraterm

27th March 2015, 08:31 PM |#929

That is the post with the picture of the coil , its in a thumbnail. The coil is located slightly to the left of the MB connection. IT looks like a transistor and one of the three legs are burnt and there is a small Surface mounted device next to the burnt location. Put a jumper of some sorts over that device and touch will work again.

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hye, I need the picture of the PCB Board to know where is the microfuse of it, coz the touch screen of my tf300t doesn't work. please help me to solving my problem. i hope you send me the link where i foud it. thanks a lot for helping. gurigjiri

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can you cut the digitizer and it still work?

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i had the same problem. go3 model isnt compatible to asus tf300t. looks like i need to order go1 instead. but what an inconvenient problem. asus is one dumbass company.

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I replace new touch screen on my tablet it's a nextbook 8inch do i have to calibrate it it works but the touch is off

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hye, I need the picture of the PCB Board to know where is the microfuse of it, coz the touch screen of my tf300t doesn't work. please help me to solving my problem. i hope you send me the link where i foud it. thanks a lot for helping. gurigjiri

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It could one of several things.

First was the power switch still on and the battery plugged in when you detached the original screen?

This could have caused a small surge and blown out a micro fuse or some micro electronic piece. Its located near the digitizer cable. You would see a small scorch mark there. You will have to run a jumper to get it to work. Just bypass it with solder.

Second you could have the wrong digitizer. There are several models. Make sure the part number matches the old one.

Third. the cable could still not be in all the way. check this first. It shouldnt need any type of software upgrade or update to work.

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hi mark, how to find the fuse?

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I couldnt find the fuse.

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as you mentioned the other cause may be different part number. Yes It looks like different part number.

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New board part number is 69.10I21.G03

and the old is 5158N FPC-1 looks totally different isnt it?

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trying to attach a pic of old digitizer

https://drive.google.com/open?id=0B5cIhz...

please guide to find the fuse and look into the part number.

new part received is

https://drive.google.com/open?id=0B5cIhz...

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I need to replace my digitizer on the tablet asus transformer pad tf300t-1e018a. The problem is i did not know there were 4 versions of it before i threw the old one out. Is there a way i can find out from the model number, serial number, or any other specification present on the mainboard or other parts of the tablet except the digitizer ribbon, which version i need to order?

Maybe someone with the exact same model can tell me which digitizer they have?

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hye, I need the picture of the PCB Board to know where is the microfuse of it, coz the touch screen of my tf300t doesn't work. please help me to solving my problem. i hope you send me the link where i foud it. thanks a lot for helping. gurigjiri

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I have the same problem

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No answer for you but just went through the same thing. Never any problem with touch screen, then dropped and cracked screen. Didn't work. Bought new digitizer and just installed without sticky tape for testing purposes. Getting the same result. What else could have broke when I initially dropped it so only touchscreen would not work? Used the keyboard with it so I know everything else works.

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hye, I need the picture of the PCB Board to know where is the microfuse of it, coz the touch screen of my tf300t doesn't work. please help me to solving my problem. i hope you send me the link where i foud it. thanks a lot for helping. gurigjiri

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Im having kind of the same problem. I am working on one for a friend and replaced the LCd and kept the digitizer. Everything went smooth. Until i was taking the digi from the lcd. A small crack near the bottom of the digi appeared but it was small and in the black bezel area. Got it back together and touch screen wouldnt work. Left it alone for a bit and got back to it and tried to seperate the digi from the lcd again. Another small crack formed. This time near the digi cable in the black outside area. Still not bad but this time i tried to really seal the digi back down on the lcd. I think the sticky pad around the outside is causing a bad buffer between the lcd and digi. When i tried the reseal now half the screen worked or slightly less. It sounds like its a matter of sealing up the digitizer to the lcd firm enough. Hopefully in my problem the second digitizer break didnt end all hope.

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hye, I need the picture of the PCB Board to know where is the microfuse of it, coz the touch screen of my tf300t doesn't work. please help me to solving my problem. i hope you send me the link where i foud it. thanks a lot for helping. gurigjiri

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Mark,

I found that the digi and the lcd work independent of one another. There is nothing to worry about the"buffer" between the two. In my case, the first digi I got the ribbon/glass connection point started peeling up and I got intermittant operation. (Luckily I didn't stick everything together yet). With my second digi I got, intermittant operation again. Eventually found that the connector, both digi and lcd were finicky. I used the sticky and the existing foam rubber to help keep these connectors in place. Everything good now.

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hye, I need the picture of the PCB Board to know where is the microfuse of it, coz the touch screen of my tf300t doesn't work. please help me to solving my problem. i hope you send me the link where i foud it. thanks a lot for helping. gurigjiri

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hola yo cambie touch sren estrellado ya no funcionaba nada compre el digitalizador nuevo me costo trabajo despegarlo del lcd pero o consegui los adesibos se dañaron los sustitui or cinta adhesiba doble por ambos lados sellando perfectamente lcd y touch acontinuacion de terminar de armar al encender el digitalizador touch nuevo no funciona nada como al principio con el estrellado

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pudiste arreglar la tablet?

yo tengo el mismo problema y necesito ayuda por favor no se que tipo de digitalizer tiene mi tablet.

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hye, I need the picture of the PCB Board to know where is the microfuse of it, coz the touch screen of my tf300t doesn't work. please help me to solving my problem. i hope you send me the link where i foud it. thanks a lot for helping. gurigjiri

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Hmm just replaced the digitizer and touch screen does not work. But it did not work before the change because the old digi was cracked all over. Lcd is good however.

Cables look like they are in all the way and snug. Could i need to reset the software through the software? Maybe the new digitizer is bad?

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hye, I need the picture of the PCB Board to know where is the microfuse of it, coz the touch screen of my tf300t doesn't work. please help me to solving my problem. i hope you send me the link where i foud it. thanks a lot for helping. gurigjiri

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Mark,

The 2 connectors, lcd and digitizer, are finicky on mine. I had to take tablet apart a couple times to "reconnect" them. I used masking tape to better hold them securely. A loose ribbon cable connector means no digitizer operation. A loose fine wire connector in the center of tablet means no lcd operation. Good Luck

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hye, I need the picture of the PCB Board to know where is the microfuse of it, coz the touch screen of my tf300t doesn't work. please help me to solving my problem. i hope you send me the link where i foud it. thanks a lot for helping. gurigjiri

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Chris. I have checked and rechecked cables. I now have another digitizer brand new to try out. Still nothing not even intermittent touch. The only thing i have found is the ribbon from the digi board to the main board has one contact kinda scrunched up. It seems like its in far enough to get past the scrunched up part. But even so wouldnt there be intermittent touch?

Could the digi board be bad somehow. ...

When i first did the replacement the screen was working even after i changed the lcd and the old digi first cracked. Cant remember when the digi stopped working all together. But i suspect this ribbon cable and have ordered a new one. Ughhhh, I would say ill never repair another one of these but my experience with them now is getting in depth.

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hye, I need the picture of the PCB Board to know where is the microfuse of it, coz the touch screen of my tf300t doesn't work. please help me to solving my problem. i hope you send me the link where i foud it. thanks a lot for helping. gurigjiri

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So i have replaced the digitizer board ribbon that connects to the main board. I found that two of the contact points were bent up and peeled back or tweaked. SO i replaced that.

So for all who are taking notes.

broken lcd problem, replaced lcd while replacing cracked digitizer. Touch started working spotty if not at all.

replaced digitizer, touch not working at all. checked and rechecked ribbons.

Replaced main digitizer - main board ribbon. no touch. rechecked all connections.

next step.... replace digitizer board? I guess its at this point. The only thing i can figure is the bent/tweaked connections on the main ribbon shorted the board?

One question i have and cant remember is could the lcd be the wrong version? I know the digitzers make a difference. And i have the exact match of digitizer. But i did not know of other versions of LCds. I have not heard that there is other versions just I wonder if there is and that is why the touch is not working.

On you tube there is a video of a factory repair where the factory sent it back to the owner saying they could not find out the problem. And it has a no touch problem also. I hope that is not the case or else im buying a new tablet for someone.

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Definitely look into "exact" part #'s when it comes to digitizer, there are revisions, look into it

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Definitely look into "exact" part #'s when it comes to digitizer, there are revisions, look into it, also the same can be said for LCD replacement.

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hye, I need the picture of the PCB Board to know where is the microfuse of it, coz the touch screen of my tf300t doesn't work. please help me to solving my problem. i hope you send me the link where i foud it. thanks a lot for helping. gurigjiri

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asus transformer t300t have three differant digitizer you need the same one near the ribbon there is a white sticker with writing on it only and nothing under on some some have white numbers and letters under sticker look at the last three might say g01 or g03 it has to be the same one other wise wont work just like the xbox 360 they have differant dvdroms some toshiba,samsung ben-q and so on if uyou but differant brand the xbox dvdrom wont work some how asus transformers are the same way

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hye, I need the picture of the PCB Board to know where is the microfuse of it, coz the touch screen of my tf300t doesn't work. please help me to solving my problem. i hope you send me the link where i foud it. thanks a lot for helping. gurigjiri

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Hi Mark,

I found your very useful. I have a TF700 and got the same symptom than you had. I didn't disconnect the power while replacing my broken digitizer by a new one. I guess this is why my touchscreen stoppped working since...

Would you know where is that micro fuse located exaclty? I have not been able to find it. My electronic knowledges are a bit rusty. I am looking for a little "F" (for fuse) somewhere on the digitizer or main board, but cannot find one.

Would remember where that forum you fond the answer is?

Also, my batterty is showing has empty when I power up the tablet, did you have the same symptom?

Thanks

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hye, I need the picture of the PCB Board to know where is the microfuse of it, coz the touch screen of my tf300t doesn't work. please help me to solving my problem. i hope you send me the link where i foud it. thanks a lot for helping. gurigjiri

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http://forum.xda-developers.com

It was in this site. I dont have time to go through it again. But if you search the tf300t forum for Coil you will find the right place just research and you will find it.

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hye, I need the picture of the PCB Board to know where is the microfuse of it, coz the touch screen of my tf300t doesn't work. please help me to solving my problem. i hope you send me the link where i foud it. thanks a lot for helping. gurigjiri

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maybe you didn't placed the cable to socket firmly. i have experienced that. sorry for may bad english

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hye, I need the picture of the PCB Board to know where is the microfuse of it, coz the touch screen of my tf300t doesn't work. please help me to solving my problem. i hope you send me the link where i foud it. thanks a lot for helping. gurigjiri

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Wish there was a way to attach a picture to this fourm, https://www.dropbox.com/s/ajmnqjciis1wi5... Is this the micro fuse ??? used my multi meter and got OL across this one. The one above had connectivity. Used Radio Shack conductive wire glue to bridge the 2 solder connections over the top of the component.

michaellaforge

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hye, I need the picture of the PCB Board to know where is the microfuse of it, coz the touch screen of my tf300t doesn't work. please help me to solving my problem. i hope you send me the link where i foud it. thanks a lot for helping. gurigjiri

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hye Mark Mata, I have the asus transformer tf300t, and i have the same problem too. my touchscreen tab doesn't work. I think is broken the PCB's micro fuse. it's possible to send me a photo to understand the exactly position of micro fuse, and repaire them??? please help me. thanks a lot. gurigjiri

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hye, I need the picture of the PCB Board to know where is the microfuse of it, coz the touch screen of my tf300t doesn't work. please help me to solving my problem. i hope you send me the link where i foud it. thanks a lot for helping. gurigjiri

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I broke my digitizer and disabled my touch screen. We replaced the digitizer but not when I try to scroll down it goes up and vise versa, also only the left side of the screen works. I have tried many different troubleshooting tactics but none seem to help. Does anyone have any suggestions?

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I have trying to make button on top part of my asus work it seem

To be siickin or stuck for some

Yours truly Brenda

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Jonathan さん、ありがとうございました!
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