I just bought a new Nexus 7 (2013), it is about a week old.
Last night I left the supplied ASUS charger and micro-USB cable plugged in overnight (fortunately the cable was not connected to the Nexus.) When I woke up this morning the micro-USB plug had literally melted, with plastic oozing out of the plug housing and through the plug itself. Had the cable been plugged in it would have destroyed the Nexus USB connector. I've seen several reports on the web of this scenario but none with a clear explanation of where the "fire" started. See the attachment.
Does ASUS have a problem here? In any case my plan for now is to use a wireless charger, it is too scary to think what would have happened to the tablet had the cable been plugged in.
I've opened a case with ASUS and they've asked me to RMA the cable so they can inspect it.
First off; post this in the right section. The 2013 folks would want to see it
Second.. Is there something in the USB cable on the 2013, like an LED, etc? What in the world could cause such a short in the plug of the cable like that? Scary.
Sorry, I didn't notice there was a separate topic for the (2013) Nexus 7. I'll replicate my original post there.
There aren't any components on the cable other than a USB Type A male connector on one end and a micro-USB male on the other.
Related
My 18 month old Tytn is not longer charger via the wall chager or car charge. But strangely it will charge is connected to the PC. I have tried a few different wall chargers including the original one and also test the wall charger on other charge by USB plug devices.
I have done a hard reset and also re-installed the stock rom.
Any other idea's ?
Same strange thing happens to me since 2 weeks.
No Charge with power adapter, tried different modells.
No Charge in car
But Charge via USB from PC . And Activesync works...
Any Idea would be very helpful.
tytn2user said:
My 18 month old Tytn is not longer charger via the wall chager or car charge. But strangely it will charge is connected to the PC. I have tried a few different wall chargers including the original one and also test the wall charger on other charge by USB plug devices.
I have done a hard reset and also re-installed the stock rom.
Any other idea's ?
Click to expand...
Click to collapse
Same here, no fix, just dealing with it, hoping the charge by usb doesn't crap out.
A few months ago I receive a wallcharger from a friend who had a HTC TOUCH, as I inspected the voltage on my original TYTN II charger and the touch charger I figured out the touch charger would do the job, so I plugged in and for a brief moment the amber light go on, but almost inmediately it went of, so I guess it would not work with my phone.
But I rechecked the voltage and got me thinking what could be wrong, and after messing around a little bit with the charger and the usb plug I found out that for some reason if I plug the usb jack all the way down it doesn't make contact with the phone usb, so I have to plug it half way to make it contact and charge the phone.
Maybe that would be your case.
Good Luck.
in my situation the yellow loading light of the TytnII is even switching on when I connect the power charger . But even after being yellow=loading for a full night .
No Change in battery status
Freecall
My Tilt had a loose Mini-USB connector thing.
:S
OK. After reading people having the same problem I decided to pull mine down and take a look. Expecting to find a blown SM fuse on the circuit board. To my surprise I did not find any SM fuses in that area of the USB plug. While I had it apart I noticed some damage to the USB socket, viewable from the outside without having to pull it apart . I re-assembled the unit and VERY VERY carefully tweaked the damaged pin (pin 1 in my case) with the tiniest sewing needle I could find in the sewing kit. I bent the gold color wire back into a position matching the other 4 and pulled it into a wall charger and it started charging. So the problem in my case was a damaged pin 1 in the USB plug visible from the outside.
Charging is done by the two outside pins.
For the pinouts check out http://pinouts.ru/Slots/USB_pinout.shtml Picture on the left hand side of the screen called MINI is the same as looking at the plug on the tytn from the outside.
While looking at the plug with a magnifier I could clearly see that pin 1 was collapsed into the plastic center part and would not be making contact with the USB charger when inserted.
I will need to take more care when inserting a USB plug from now on and reduce the amount of time I used the plug. I have been geocaching with my TytnII the last few weeks and it has resulted in a lot of plugging in each time when returning to the car. This practice will have to stop for me if I want to get more millage out of my tytnII.
When I first got the phone earlier this week, I could plug it into the charger in the wall just fine with no issues, it would just charge. Now suddenly it started telling me USB connected and goes to the MTP screen and of course locks up the phone.
I can of course bypass this by switching the phone to mass storage mode, but since I have Kies and use it occasionally, it would be nice to not have to switch that setting each time depending on my charging/syncing situation.
Why would it have not locked it up with the MTP screen originally when charging from the wall but now it does? The results are the same whether its plugged into the wall or the USB port on the computer. I have two Captivates bought brand new on a family plan, both do this now with any combination of chargers and USB cables, wall USB port, or car charger. Neither one has a common application installed since the other is my girlfriends who hasnt done much to it yet, so Im blaming the phone itself for now...
~T.J.
Interesting. I just checked with my BB charger and they dont do it using that charger, but they do it as soon as I connect the stock charger again.
Im wondering if its a voltage sensing circuit thats tripping due to the different voltages which should be applied - either wall charger or USB port. Maybe for some reason my wall chargers arent putting out enough voltage and its thinking its a USB port, but the BB charger is putting the right amount of voltage out?
Am I on base as to how it differentiates between wall or USB port? The number of pins obviously doesnt matter as all the cables have all the pins in them, unlike some charger cables which only have the power and ground. The only thing I can think of is that it uses the amount of voltage/current to tell the difference and create its reaction.
~T.J.
Sounds like a problem with the stock charger, maybe usb cable alignment. My iphone wall adapter does this with the samsung cable but the samsung wall adapter doesn't, same with my car charger from att. Also I have a $5 walmart car charger that has a cable that splits into both a mini usb and a micro usb that isn't a real usb cable, it's charge only. That cable has no problem on any wall or car adapter. I believe the phone detects if its connected by checking voltage on a data pin (just a guess really) so if a nonstock charger is used it assumes that it is a computer. But it may also be a data signal that is given off by the charger.
Sent from my SAMSUNG-SGH-I897 using Tapatalk
did you try a new charger and if so, did it work? I've had my captivate since Thursday and on Thursday it charged and everything fine, but then yesterday,
a) no computer I connect it to while recognize it, no matter what I have it set too and have latest drivers installed
b) if I charge it, after I unplug it, it locks up to black screen and I have to remove the battery to get it to work
c) I also have an in-dash touchscreen monitor in my car that has a usb port because it works with an ipod. I plugged the usb into to use it as a car charger, unplugged it, same thing
d) it did say usb connected after it was unplugged, but I switched from mass storage to ask on connection and it went away
so is an actual wall charger the solution?
Sent from my SAMSUNG-SGH-I897 using XDA App
and now I unplug it, and if it locks, it will not unlock, just black screen
I have to take out the battery and then only way to get it to turn back on, is to plug it back in the wall
Sent from my SAMSUNG-SGH-I897 using XDA App
^^^Ouch that's not right, if you can't figure it out you may need to re-flash or just bring it back under warranty, or insurance
Sent from my SAMSUNG-SGH-I897 using Tapatalk
I have a friend who is visting the US (I'm from Canada) and I asked him to pick me up a nook. Not finding clear info in some of the reviews, mainly concerned about charging.
This charges over usb when hooked up to your computer right? Just want to make sure it doesn't use a proprietary cable for charging. I read on the ipad side, that older computers don't give out enough power to charge over usb, is that an issue with the nook?
What adapters/cables does it come with exactly? And is it just a standard mini-sub for the charging?
Also, this has a headset jack correct? I've read no bluetooth, I guess there's no way to get a mic working on this then.
Micro USB, will charge VERY slowly using a computer. Includes a 2amp wall socket and special cable to quick charge (still micro usb, just more pins). Has a headset port but does not come with a headset.
I've only had a few mobile devices. I read the ipad can charge over usb if the mobo supports giving out that extra juice. Some mobo's have a new firmware update to enable this.
The connector is micro-usb but just more pins. Hmm. so if the cable breaks or I misplace it no other micro-usb will charge it?
edit: i read a little more and found that it's 30 pin proprietary cable to speed up charging. I also read the galaxy tab does something similar.
Does anyone know if they use the same pin configuration? probably not, but I can get tab usb cables here.
I know you didn't ask for it but I'll tell you anyway
In case you are worrying about registering your device (mandatory at initial setup).
I'm NOT in the US and it worked fine.
Good to know. Thanks.
But I'm more concerned about charging it and relying solely on their cables.
I read the ipad can trickle charge on newer computers but some wouldn't provide enough power. Asus et al have released utilities to increase the power to the usb ports.
I can't post the links but endgadget has an article about it providing links to those utilites. They just talk of apple devices but does this work with the nook?
It comes with a charger for US-type sockets and only if you charge your nook with this (and yes, it is proprietary ) it'll charge quickly. It does seem to charge when you connect it to a standard PC USB port but at an extremely low rate.
On the device Micro-USB (not Mini) is used.
You say it does seem to, do you mean from personal experience? How slow? It sounds like that if you do own one it was so slow you didn't let it finish.
Like if it's 8hrs overnight, I can live with that, but I want to confirm that there is a plan b and not solely rely on their cables.
And as I mentioned asus and others released utils to give more power output to the usb (although these seem like their were only created for ipads). Wondering if those utils speed things up.
for ex, google asus ai charger to see what I mean.
I received my nook Color a mere few hours ago so I can't tell you a lot about its charging behavior It "seems" to load slower via standard USB... if you want to know about the details check one of the large threads on the NOOK and its rooting. I remember reading some information about the USB connector and its peculiarities there.
Ah you just got it. I see.
I found this on the root thread:
'
"There are 12 pins coming off the connector. It looks like there are no pins for the standard micro USB portion, only the extended 12 pins. 2 pins are used to bring in +5V, 2 pins are for signal ground providing a hefty circuit for the 2A charging. USB takes up two pins, and as far as I can tell 2 more are for each LED via current limiting resistors. Two more pins go to discretes that I haven't identified, and two more pins are unconnected. I'll take my scope to them when I have some time."
Not sure what he means when he says no pins for the standard micro portion...
Maybe the plug doesn't have standard USB pins, but the NOOK itself does have standard USB pins as well as the proprietary ones. Because I have trouble inserting the original B&N plug, I went out earlier today and bought a standard Micro USB cable...
I connected it to the nook and it said "not charging", so I went out to do some shopping (10-20 minutes max) and left it at 89%... when I came back it was at 93 %.
So it DOES in fact seem to charge albeit slowly.
Thanks. It's weird, lots of comments of its own cable not fitting properly.
As long as it charges with a normal cable I'm good.
I guess it is charging... however there is a slight chance, that it's NOT charging and the battery charge display is lying (de-calibrated). I don't think so, but I'll only know for sure after a few more days of using only the standard USB charger cable.
Today I managed to get my NookColor cable caught in my car door while I was getting in my car to head to work. This mangled the cable up pretty good. After much swearing and a trip to Barnes and Nobles I purchased a replacement cable. With the new cable in hand I figured I might as well take the end apart on the broken one to see how it was wired up. Using a pocket knife I forced the joint where the two pieced of plastic are joined together apart. The end result is rather interesting.
The first image is of the top side of the connector. This is where the little LED is located. The second image is of the bottom side of the connector. The third is of the bottom side of the connector with the shield removed.
The interesting thing is that the connector does not actually have the four standard pads for connecting to the normal USB pins in the NC's socket. It only connects to the twelve extra pins at the back of the NC's socket. Two of those extra pins must be for the standard USB communications. At least two more are used for the power connection to the NC. That leaves eight unknown pins. One or two of which probably controls the LED on the cable. As soon as I can find my multimeter, I plan on doing a continuity check between the USB cable wires and the pins in the connector. Any other suggestions of things I should be looking for?
I read in passing that the deeper socket on the nc, that makes regular microUSB cables not charge the nc, relates to the extra contacts needed to charge the bigger battery more quickly. Will try to find the reference-
Regular cables DO charge... At 500mha, the stock rom does not she charging but it does around 10%/hr if idle.
There are certainly several ground pins which should be ready to find. finding those will help narrow it down.
Sent from my NookColor using XDA App
Khaytsus: i stand corrected. Found the reference: barnes& noble 'book clubs' (ie forums) thread on "things that you should know about the NookCOLOR." A non nook color USB won't charge it when in a wall socket, but may keep the battery from at least going down.
Even a NC branded USB isn't officially expected to charge a NC, if plugged into a pc USB port. Neverrtheless, some say it trickle charges when left atrached to a computer all night (like 8hrs). In a wall socket it supposed to charge in 4 -5 hours.
Interestingly, NC won't charge at all if turned entirely off while plugged in.
The same thing happened with me too(my cable also broke, and i decided to experiment with it). Here's what i found out.
1. Three wires in the usb cables are solely meant for charging.
2. If only two (ground an one live) wires are connected, the stock cable charges nook like a ordinary usb cable(very slow).
3. The nooks usb cable tip had 3-4 more outputs which were not connected to any wires in the usb cable(they could be anything from mic input to video output).
I was trying to get more info on these extra outputs by soldering some wires to them but it needs very fine soldering, i couldn't achieve that and i broke mine entirely.
That reminds me can anyone send me a extra cable as am not in U.S(so B&N won't send me one) and am sick of waiting for 10 hours before i can play with my nook again.
mjf0000000 said:
Interestingly, NC won't charge at all if turned entirely off while plugged in.
Click to expand...
Click to collapse
Uummm... Don't think this is true as I charged my Nook just last night with it turned off.
I'm sure you have this, but for anyone else who would like to look at the standard USB pinouts.
While I'm on the topic, did the Nova disection help in determining the Nook end of the connections?
the last time i looked, Nova hadn't really looked that close at the USB...they were focusing on the wifi/BT chip.
very nice was planning on doing this myself one day soon...any chance you can go in a bit closer and get clearer pics of the traces on the pcb? Would really help to decipher it.
Interested to see a breakdown of a standard micro usb vs nooks for comparisons sake
A couple of things:
-The NC connector has a row of 12 pins, but does not have any pins that match with the "legacy" microusb pins. At least 4 of the signals on that connector duplicate the microusb pins (gnd, d+, d-, +5). IIRC there are two +5 pins on that row and three grounded pins.
-Hooking only +5 and gnd to the USB end of the stock cable causes the NC to charge at max current draw. I made a short USB interposer that does this. I suppose you could put some carefully applied tape over the middle pins if you wanted to try. Here are some measurements I did of various ways of powering the NC a while back:http://forum.xda-developers.com/showpost.php?p=9410625&postcount=243
mjf0000000 said:
Khaytsus: i stand corrected. Found the reference: barnes& noble 'book clubs' (ie forums) thread on "things that you should know about the NookCOLOR." A non nook color USB won't charge it when in a wall socket, but may keep the battery from at least going down.
Even a NC branded USB isn't officially expected to charge a NC, if plugged into a pc USB port. Neverrtheless, some say it trickle charges when left atrached to a computer all night (like 8hrs). In a wall socket it supposed to charge in 4 -5 hours.
Interestingly, NC won't charge at all if turned entirely off while plugged in.
Click to expand...
Click to collapse
I have one interesting finding to note. Most USB wall adapters are 500mA. I happened to have a USB wall adapter that is 1A. With my 1A, I was able not only able to keep the battery from draining, but I was able to replenish it (although it was very slow) As a comparison, the USB adapter from B&N is capable of 2A.
I will try and get closer pics of the PCB when I get home from work. I just need to get better lighting than my dark home office.
after years of not issue, yesterday my note stop charging in the outlet chargers, I have several all do not charge it but have no issues charge my wifes phone.
but I can charge the phone with the same orig cable when the usb is my computer and not the outlet.
any clues why my phone will charge in my computer with same cable but not in orig outlet plug. please tell me I do have to have my $2K high end gaming desktop on just to charge my phone in its usb slot.
I cleaned everything, it is a new battery
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any help is apprecaited
I guess problem is in your adapter..try different adapter and see if it helps
Sent from my AweSoMe ?♥Note2♥?
I have tried 4 different adapter/cords combos ( just in my house) none of them charge my phone in an outlet - all work with my wife's smaller samsung in output. so weirdly only a direct usb with the oem cord to computer works ( in both my desk and laptop). so weird. so annoying.
You have to buy a new charging port, and the board that comes with it. This is a link to the part you need. If you search "n7000 charging port flex ribbon" you should be able to find other places that have it. http://www.etradesupply.com/oem-samsung-galaxy-note-gt-n7000-charging-port-flex-cable-ribbon.html