Ok, not sure if this should go here or the Samsung Epic 4g Touch Forum, as this is my phone and where the issue occured, but I figured this could apply to other phones and wanted to help whoever out.
Anyways, I had the phone for just two weeks and one day I connected to my computer with a micro usb cable, and the computer would fail to recognize it saying "USB device not recognized..." I tried everything including different computers, cables, reinstalling device drivers etc to no avail. Come to find out, I plugged the micro usb cable into the micro usb more firmly and pushed down on a little bit, and finally recognized the device. I guess the port was wearing down over just two weeks and the connection had come loose.
Anyways, wondering if anyone had this issue and if it was repairable as I can see the port getting progressively worst with repeated plugging and unplugging of the device. Thinking samsung would have been able to have built a more durable mini usb port for such a nicely designed device.
Well first, you were right with wondering if you were posting in the wrong place. This is the original epic forum, not the touch. Also,this question has been beaten to death already. Either your cable is faulty, or your drivers aren't fully installed. You can also remove your battery while in download mode and that can help it being recognized.
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b16flybye -- I think I just said it wasn't the usb cable or drivers and that it was the actual micro usb port on the phone that was causing the issue.
If you truly believe that it is the port, you can get it replaced at a Sprint store.
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and sorry I meant to post in the general forum. I will move my post.
Gavisann -- Yea, it is the port. Once I push the cable in further, the device will recognize it, but once I let go, it loses the connection.
tnguyen444 said:
and sorry I meant to post in the general forum. I will move my post.
Gavisann -- Yea, it is the port. Once I push the cable in further, the device will recognize it, but once I let go, it loses the connection.
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He also meant wrong device. This is not the Epic Touch. It is the Epic forum you are in...slide out keyboard...1 1/3 years since release.....
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He's a long way from home. Good luck with your...port, or cable, or whatever the hell the problem is. Sounds like you knew the problem before you posted in the wrong place though.....
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Related
Am I the only one who can't sync with a home dock? It has never been able to sync from the roll out day that I bought it. I always thought it was a Samsung screw, but I opened it up tonight. You can see in the pic below that it actually has a USB connection with all the right wires. Does anyone have the correct pinout to the micro USB connector? BTW, not a bad pic for 5 megapixel camera, heh?
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If you are talking about the Media Part of it, then this is an issue with Samsung that is supposed to be fixed on froyo. so just wait a day or two and test it then. Also you might find more answers Here:
http://forum.xda-developers.com/showthread.php?t=783177
?Not talking the video Froyo thing. What I'm taing about is the usb micro circuitry that should allow us to sync between the phone and the computer via the micro cable?
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Top Nurse said:
?Not talking the video Froyo thing. What I'm taing about is the usb micro circuitry that should allow us to sync between the phone and the computer via the micro cable?
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I'm not sure what you think the dock does, but there is no desktop sync with these devices (until Samsung Kies works, which will probably be never). When I plug mine into the dock, it asks whether I want to charge or start the USB hub. If I choose the latter, it connects as a USB device, but syncing with Outlook, etc. doesn't happen.
bigray327 said:
I'm not sure what you think the dock does, but there is no desktop sync with these devices (until Samsung Kies works, which will probably be never). When I plug mine into the dock, it asks whether I want to charge or start the USB hub. If I choose the latter, it connects as a USB device, but syncing with Outlook, etc. doesn't happen.
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I just wanted to use the usb port to do odin, 1 click, move files, etc. On mine I get nothing other than charging. The one suspect wire was the white one which might have been making contact with the board. On my way to sprint store to get a replacement.
THANK YOU!!!
Moved response to here
Buddy's Epic. He screwed it up. Iwas flashing with Odin (from a flash drive plugged in to computer, don't ask and don't do it) to stock. Halfway through it did this. I managed to fix it, but i wanted to share this picture.
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Tabbed on my Galaxy 987
This has happened to me! Trust me, when you see that screen your heart sinks, haha. But yea it's either because the USB cord you are using is not good, or the USB port is not good. If you're on a desktop try using the USB ports on the back of the computer.
It ended up being a bad cable.
Tabbed on my Galaxy 987
Yeah I would have just about **** myself. Glad you got it fixed.
Sent From My Evo Killer!
I get those screens ask the time flashing with odin. I just remove the batt and put it back. Re Odin. I notice the usb in the back of the pc works best. I also noticed I'm getting the color screens almost every flash attemp with odin. Not bricked, just crashed. But have you ask figured out what exactly causes those crashes? Is out really the usb cable?
Well....at firat a bad usb cable prevented the pc from detecting the phone. It would charge. But no data. I got the green screen a couple of times when flashing from Odin that resided on a thumb drive (along with the rom). I then moved everyting to local C: and it flashed fine afterwards. Don't know if it was a coincidence or a problem with using flash drives. This was from a Dell Precision Workstation with XP Pro.
Tabbed on my Galaxy 987
oh wow I think I would have screamed in horror~!
Yea I would freak the hell out. Considering I use my phone for work, and the fact I had to pay full price for my Epic. Never done a Odin flash before, anyone have any tips and tricks for a fist timer? So I will go down the road he was in.
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.
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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?
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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
I'm installing an HTC flyer in my car permanently where the radio would go (2DIN mounting), but kind of sad at the prospect of losing camera functions (video of dashboard interiors are boring).
So, what would be involved in removing the camera module and placing it somewhere else, as the dash for example? Would I just need to unsolder the camera module, solder on a whole bunch of cables, and connect them to the same contacts? Or am I barking up the wrong tree?
Alternatively, if a device has USB OTG capabilities, is there any way to make it talk to a regular USB webcam?
Discuss
Alot of research could go into what you're trying to do.......
However, I'd recommend just trying it and see what happens. Make sure your wires are all the same length.
So yeah.. In this situation, i think the Leroy Jenkins approach is appropriate.
AdamOutler said:
So yeah.. In this situation, i think the Leroy Jenkins approach is appropriate.
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PRICELESS!! lmao. @OP, awesome idea for the in dash flyer. Please post some completed pics!
have you thought about removing the camera from the back ad making "jumper cables" to put it up front? you might need something to make a housing for it to sit in the dash, but it would be better than writing a driver for it.
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The thing is in adding(soldering?) 2 proper connectors to longer flex IMO, hard to do at home, but nothing is impossible. ^^
About OTG connecting - you'd probably use universal WebCam drivers from Ubuntu for eg. though the problem would be in powering that I think, WebCam has to be OTG compliant (with external power connector maybe?) or you'd need some special adapter, the rest is redirecting Android to use your webcam, but don't think it's hard comparing to other things.
I did this with a fascinate in my 87 BMW 325ic
I bought 2 extra cameras ( paid $16ea somewhere, cant remember off hand)
I failed at getting it to work myself as I suck at soldering.
However-
I had a friend take it into work and solder it in for me. We then took a light sensor from a 4th gen camaro , mounted it on my dash, ran the cam there, installed the phone and f-in-a . it was sweet.
this lasted for a full 3 weeks until something came undone and now the cam doesnt work. Ive switched back to the stock deck and just wired a bluetooth receiver into the tape deck, mounted a droid x down by the ashtray and it works. Not as great as what I had, but it works.
Point being, it can be done. and its pretty sweet when done right.
grab fried boards from ebay and start from there.
Wait some more weeks, cotula is developing usb host mode driver, and he has developed a working driver. Its for android. It will be available soon to public when he corrects the errors.
So u can simply plug in an usb cam to ur phone( providing only external power supplay is needed.) So u can do it with out bricking ur phone. Till then use it as a phone..
send from my hd2 @ miui 1.12.2
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
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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.
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