My nook coolor has worked perfectly since the day I got it, the second day after release. Last night when I put it in the charger I noticed that if the cable was pushed a little bit up when then nook lay flat it lost connection. It actually been charging itself up to 50% untill it stopped charging beacause of the cable.
I'm thinking that the micr usb port is the probleme here, is this a known issue?
I've seen reports of this being a problem. Usually the cord is at fault. You should be able to exchange it at a B&N
The USB port on the NC has two stages. The first stage has the standard 5 pin connections, but the second stage has 12 pins that are specific to charging the Nook. If you don't push the cable all the way in, it won't engage the 12 pins and won't charge properly...
Sent from my NookColor using Tapatalk
I've noticed this too on my NC. The cable plugs into the device easy enough but the slightest movement of the cord causes it to cycle between charging and not charging (orange and green 'n' on the cord). This makes it virtually unusable while plugged into AC power...not a deal breaker but a pretty annoying little bug. Will a new cord really fix this issue and will B&N replace them for free?
On similar hardware, often times that is an issue with the internal jack being tweaked too often and breaking the solder connections, or the copper traces themselves. From the tear-down pics, it's all surface mount, which means if it IS the jack, you're most likely SOL if not under warranty.
I've had my NC for about 3 weeks. My micro usb connector is no longer connecting reliably. I have to lay the NC on its face for the connector to maintain a data connection. The power connection is more reliable, but not 100% either.
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.
Help guys. Do appreciate a little help here. I have a phone cover for Galaxy Note and it covers it perfectly except a little problem with the opening of cover at the microUSB area. The hole over the microUSB area is not properly cut. It means that whenever I would plug the microUSB wire into the port during charging, it wouldn't fit perfectly. However, the battery still indicates that it is charging eventhough the microUSB charging wire is only plugged into the microUSB port halfway.Battery always charged to a 100%. My question is could plugging the microUSB wire halfway into the port damage the phone in anyway while it's charging? Thanks.
Not likely, but there is a chance it might damage the phone. Since it's not properly inserted, some connectors might hit wrong pins, especially when moved.
Probably best to just take the case off for charging.
I'm having a bit of an issue with my usb port where I need to push the cable upwards (if you are facing the phones screen) in order for the phone to begin charging. It also is taking a little longer than normal. I have tried a different cable as well with the same result.
Is there anyway to repair the usb port on the HD7? I just took the case apart on the back, but the port is still shielded. Is there any instructions out there on how to replace this port?
Iron soldering or a new board, your choice.
try with the soldering, if that fails, a new board must be bought, it cost around $25-$35 online.
So I've ended up destroying (the charging circuit) my I9000 by removing the usb connector the wrong way. I've followed this guide
but I was to impatient with heating up the usb connector., Because of that the copper pads came along with the pins of the usb connector.
So now my question. Is it still possible to make the charging circuit work?
I've found these two images. Source 1 and Source 2. I don't know if the images are right, can anybody confirm this?
But if I run wires from the pins of the usb connector to the components in the image would it make the charging system work again?
Or are there any other smart solutions to fix this issue?