Database Users

USB port does not work, any way to fix or root?

So for some reason my USB has stopped working and i can no longer connect to a computer or charge the phone.
I've already purchased another phone so i'm trying to repair this one to use as a backup.
I took the phone apart and the USB port looks to be in tact without any problems, does not appear to have any loose connections or broken connectors.
I did find what looks like maybe some type of corrosion that may have seeped under the tape and bridged two connections on the board.
The phone works perfectly fine except for the USB port, as long as i use a charged battery the phone does everything is has been able to since i purchased it the day the EVOs came out.
So my question is, does anybody know a way to root with hboot 2.16 without using USB? The only method I found to root was the most recently beta released version located at http://revolutionary.io/ which requires a connection to the computer.
I found a possible fix for usb not working and in order to try it out i need to have a rooted phone.
Does anybody have any type of schematics for the EVO? Showing pin outs, etc?
Here's a picture of the section i'm most concerned about, so maybe i could possibly bridge the connection if for some reason it was damaged:
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I'm pretty good with electronics and have no problem soldering connections, i do it all the time with traffic signal electronics. Just wondering if someone knows where a schematic or something would be?
Any ideas guys?
Please don't waste a post by telling me to file insurance claim, I did that already and already have a new phone, this phone i want to try and get working so i can have it as a backup in case something happens with my current phone.
Thanks for all the help in advance!

I wanna know the same thing my EVO will charge but won't connect to the pc for some reason.
Sent from my PC36100 using XDA App

Oddest thing! I came to the forum to post about the same problem. I just noticed that I cannot mount my phone to my computer anymore. I did not change ROMs or anything. It was working before.
It will charge but when I plug it in my computer says an unrecognized device is found and that's it. It won't install it and just gives me an error on the PC. This occurs on my desktop, netbook and work computer where I used to be able to mount.

Not sure about any schematics or is any exists for this certain occasion but with the problem you have there I'd say if your experienced enough you best getting brand new charger port from ebay rather then fixing that busted one. you can get a good OEM charger port for $5 on ebay

To everyone that says they can charge but no data connections via usb. We busted our ports somehow guys and girls... It's not aofwatre. Bootloading problem etc.. It's hardware. Known issue if I recall as well.
Also you should try to sand the corrosion with a fine grit if you can. Or maybe it was bridged and you fried something. Have you seen any burnt parts on the boars?
Sent from my PC36100 using XDA App

Is there an official post regarding this "known issue"???
Or is there a DIY fix for this? It is quite annoying to transfer files on and off my MicroSD without a USB connection.

No but I have heard people taking their phones in due to USB port issues and said that the people said it was a known issue. As I recall if you look into it you should find that there is alot of problems wiht people and USB port issues.

Yeah i still haven't been able to figure it out, got busy with work and didn't have time to mess with it until just now.
I'm going to order a new usb port and solder it on and see if that works.
I will update this thread with my results, should be in about a week.

had this same problem try a different usb cord that was my fix

[Guide]Problems with charging?this might help you :)

Hi guys,
the last five days i was having problems with my usb port and it really scared me because this is how i lost my last phone.It first started to charge randomly,sometimes charged sometimes not,until it didnt charged at all,but thats not the case with my x8(i hope so ).
If you having promblems with charging too, keep reading this thread and i hope you will get an answer.
Usb looseness can be caused due to several reasons,what im gonna tell doesnt guarantee that it will solve your problem.
1)Change your charger
-If the problem is in the usb cable that will solve your problem for sure!
if any of your friends have the same phone borrow his charger and try to charge your phone.
I dont really suggest to buy a new one just like that,maybe read further and if nothing happen then go for a new charger.
2)Clean the usb port
-Its really common for the usb port to fill with dust and lint and as a result usb cable doesnt fit in the port well.
Check this thread out to see what you have to clean
telmosousa said:
A while ago I noticed that my micro USB cable does not fit well on my U8800 and when I picked up my phone the cable the cable always fall out without doing any force. After reading various sites, to decide what would be the best way and after I did it I'm now leaving here how to solve this problem. In my case it was dust and lint that accumulated because of taking the phone in pocket, etc..
Tutorial
You should use a toothpick, previously buffed with a fine sandpaper like the image below. You can use other objects, but with the toothpick you can do it without turning off the phone because it isn't a electrical conductor and you can also sharpen the tip very easily.
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You should clean the area paint in blue below:
After this you should give special attention to areas in microusb port marked in red below which is where bolts fits and attach the cable to the port. You should try to clean as much as possible the dust that has entrenched there.
In my case after 5 minutes of hard work this was the result:
I used the lamp on my bedside table for a better look inside the door. Those black things are dust that came out of there now do not have any slack in the port works at 100% and I can move the phone without any problem.
Click to expand...
Click to collapse
3)move the thing* inside the usb port
If you didnt understand what im talking about i hope the pic will help you
-Try to barely move it with a pin or with you finger or with something else, if the problem resist try to move it a little bit more,be carefull!!!Don't push it too hard it can break!!!
For me it works when i push it from the front side of the phone to the back,but if that doesnt help try the opposite.
This is how i solved my problem,after noticing that my usb cable was unstable when it was plugged in, i tried to move it and it worked,now it charging normally and if i move it the opposite direction it doesnt charge
*****Warning*****​That is for when you have problem with it, if your port is ok dont mess with it!!!!!!!
And dont mess with this too much,you can break it!!!!!!
I'm not responsible for any damage you possible do to your phone
If you have any suggetion for the thread or for my english( ) please feel free to tell me by posting your comment or by pm
*does anyone know the exact naming?i cant find the proper word...

Thanks! Nice thread! I have this problema too..
Sent from my E15i using xda premium

Thanks for the guide! It could be useful

Thx Im going to try!!!

im glad you liked it

Good work bro.
Sent from my E15i using Tapatalk 2

[Q] [need Help] my I9505 not connecting to any PC

Dear All,
I would really appreciate it if some one can help me solve my problem with connecting my i9505 to the PC through the USB at all only charging but Kies wont see PC gives balloon of USB devise malfunctioned.
I have tried many many options like
- changing the cable
- changing the USB port
- changing the PC
- changing the
- debug mode
and many others
i know it is something with the internal settings but cannot get it done
if someone knows any other code than *#7284# or *#7281# which can do the same function please advice as the mentioned ones did not work for me
some pics of my settings:
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Please HELP
Thanks & regards,
Ramzi

Anyone can help on this issue please?

ramziadi said:
Anyone can help on this issue please?
Click to expand...
Click to collapse
I had a problem once with the original cable that came with my s4, It charge and everything but when I connected it to the pc it failed to connect. But a change of cable had solved my issue.
But since you have tried that option already. Did you check to see if one of the pins from the phone's port is probably missing or not in the correct position? It could be the pin that transmits data is broken or something.
Also try to angle the cable when plugged (phone side) in to see if you get any connection. (If you do, then one of the pin is loosed.)

acboy555 said:
I had a problem once with the original cable that came with my s4, It charge and everything but when I connected it to the pc it failed to connect. But a change of cable had solved my issue.
But since you have tried that option already. Did you check to see if one of the pins from the phone's port is probably missing or not in the correct position? It could be the pin that transmits data is broken or something.
Also try to angle the cable when plugged (phone side) in to see if you get any connection. (If you do, then one of the pin is loosed.)
Click to expand...
Click to collapse
Many thanks for help, but unfortunately this could not be the issue as the phone is new and has been taken out of the box.
Even though i have tried what you said but with no success
the phone only charging and the pc giving me that USB device attached malfunctioned

ramziadi said:
Many thanks for help, but unfortunately this could not be the issue as the phone is new and has been taken out of the box.
Even though i have tried what you said but with no success
the phone only charging and the pc giving me that USB device attached malfunctioned
Click to expand...
Click to collapse
Are you running a custom rom or kernel?

JabawokJayUK said:
Are you running a custom rom or kernel?
Click to expand...
Click to collapse
no sir, it is the original factory rom, it was new and when i turned it on first time, it found update about 360mb and that is about it.
and from day pc could not see it as a phone

ramziadi said:
no sir, it is the original factory rom, it was new and when i turned it on first time, it found update about 360mb and that is about it.
and from day pc could not see it as a phone
Click to expand...
Click to collapse
Try enabling developer settings, then mass storage mode.
you could try accessing it with odin to make sure its not a hardware fault with the phone? maybe even have a close look into the connector to make sure there is nothing stuck inside like a tiny piece of paper or fluff that is covering one of the pins.

JabawokJayUK said:
Try enabling developer settings, then mass storage mode.
you could try accessing it with odin to make sure its not a hardware fault with the phone? maybe even have a close look into the connector to make sure there is nothing stuck inside like a tiny piece of paper or fluff that is covering one of the pins.
Click to expand...
Click to collapse
thanks a lot for your help. It was too much for me so i just sold it.
but i hope no one will have such a problem
best regards to all of you

Nexus 4 USB not recognized

Hello, long story short...
Stuck on google screen, no ROM, just TWRP. ADB Fastboot don't work, phone will charge, but windows 8.1 won't recognize it, it just says USB Descriptor Failed and Not Recognized. Drivers for it don't work either.
Bad Motherboard?
EDIT:
I already tried swapping the USB PCB from another fully working Nexus 4 and it did not work anyway, while the one from this damaged one did work correctly on the other already working N4

Take it you've tried another cable and usb port on comp? Also a good chance that this is charging block on the phone rather than motherboard. Worth a try.

This may help http://forum.xda-developers.com/showthread.php?p=42022027
Sent from my Nexus 5 using XDA Free mobile app

jd1639 said:
This may help http://forum.xda-developers.com/showthread.php?p=42022027
Sent from my Nexus 5 using XDA Free mobile app
Click to expand...
Click to collapse
I already tried that, but without the correct Device ID the drivers don't do nothing. Tried forcing them on the Unrecognized USB Device, but it failed to communicate with the phone entirely. I tried swapping another USB PCB from my wife's N4 and same problem... I think I killed this thing... man... Should I try a Laptop with Ubuntu?
EDIT:
I read in another post that it might be the internal USB connector pins (the little orange cable that plugs into the mainboard), I will check this and see if I can straighten them out. Will post back results for everyone wanting to know if this was the problem

I think I found the problem, one of the transistors is kind of blown...
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Does anyone know where I can get a replacement resistor/transistor? Doesn't look that difficult to solder.

Looks like something is bad internally, logic board replacement is inevitable. The component is called a Transient Voltage Suppressor (TVS), it's meant to protect other components, but even after shorting it still throws a not recognized message. Sorry for everyone reading this thread, you will need a replacement motherboard (logic board).

Getting the same problem, happened because of a short circuit on the car charger. Really not possible to change only the transistor? Can live without the working usb, but the horrible battery life is killing me.
Sent from my Nexus 4 using Tapatalk

Nexus 6 Main flex?

So. I have a nexus 6 device and i sent it with a technician for a battery swap (turning of randomly). The thing is when i got it back the phone was dead, the device didn't show any sing of life (didn't boot and didn't even showed a charging animation.), i tought the new battery was the problem but the technician told me that wasnt it. I didn't receive any explanation of what happened to the device or why it didn't turn on.
Anyway. I oppened the device myself and realized that a flex was partly sliced. (the flex conected to the other flex that's supposed to be for the buttons).
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Could that be the reason why my good nexus 6 is now a brick?. When i conect it to a usb on my computer it doesn't show up in any way. maybe if i change that flex the device wont be dead anymore? hope you guys can help me thanks.

manzures14 said:
So. I have a nexus 6 device and i sent it with a technician for a battery swap (turning of randomly). The thing is when i got it back the phone was dead, the device didn't show any sing of life (didn't boot and didn't even showed a charging animation.), i tought the new battery was the problem but the technician told me that wasnt it. I didn't receive any explanation of what happened to the device or why it didn't turn on.
Anyway. I oppened the device myself and realized that a flex was partly sliced. (the flex conected to the other flex that's supposed to be for the buttons).
View attachment 5188621
Could that be the reason why my good nexus 6 is now a brick?. When i conect it to a usb on my computer it doesn't show up in any way. maybe if i change that flex the device wont be dead anymore? hope you guys can help me thanks.
Click to expand...
Click to collapse
Connection cables look okay to me since my nexus 6 didnt have a back at first so ik the battery maybe be dead but its also super dirty or it could also be a software problem

moonwolfyt said:
Connection cables look okay to me since my nexus 6 didnt have a back at first so ik the battery maybe be dead but its also super dirty or it could also be a software problem
Click to expand...
Click to collapse
Actually now that i took a closer look it seems the cable is damaged almost ripped apart you might wanna get that replaced

You can usually find spare parts like this cheap on AliExpress - but it may take a long time to deliver.

runekock said:
You can usually find spare parts like this cheap on AliExpress - but it may take a long time to deliver.
Click to expand...
Click to collapse
Use EBay I got my back cover in 2 weeks while on aliexpress I've been waiting a month to get my sim tray and case for 2 months...