Hello everyone,
I have my 32GB TF201 with docking that I purchased 3 weeks ago. After I purchased I was able to charge my table directly thru outlet twice and once thru the dock. This week the tablet ran out of battery. I plugged it to the outlet with an empty battery and yellowish light was on. In the morning (after 6 hours of charging) I checked and the light was still yellowish. I said 'what the hell' and left home for work. When I came back I checked and saw that the battery was only charged to ~9%. I re-checked the outlet and it was not charging. The battery icon appears when I plug the cable but the status is 'Not charging' and it actually is not charging. I could then charge the dock thru the same outlet and usb cable up to 100%. I also could charge the tablet thru the dock's battery. the only problem is between the charger and the tablet itself. I will still take it to the service but I can still listen to ideas to check in the weekend.
Thanks a lot.
You probably have a busted charge port on the tablet itself. Try plugging the tablet to the computer and see if it registers. If not, more than likely the charge port on the tablet is broken.
Sent from my SPH-D710 using xda premium
huynhc said:
You probably have a busted charge port on the tablet itself. Try plugging the tablet to the computer and see if it registers. If not, more than likely the charge port on the tablet is broken.
Sent from my SPH-D710 using xda premium
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that was the one thing I did not check and I will today. but the tablet is being charged from the dock that is connected thru the same port.
I am having the same no charging issue, but I do not have a dock. The device recognizes the computer just fine when I plug into that, but into the wall, I get nothing. Even when connected to the computer, all the connection info pops up (usb debugging, asus sync, etc) but it does not charge. Problem started this morning.
Cayniarb said:
I am having the same no charging issue, but I do not have a dock. The device recognizes the computer just fine when I plug into that, but into the wall, I get nothing. Even when connected to the computer, all the connection info pops up (usb debugging, asus sync, etc) but it does not charge. Problem started this morning.
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sorry to hear that but still good to know that I am not the only one I will update this thread when and if I get a response from the service. please let me know if you find the reason or a solution to this problem
cheers
yuzereroglu said:
sorry to hear that but still good to know that I am not the only one I will update this thread when and if I get a response from the service. please let me know if you find the reason or a solution to this problem
cheers
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Okay, I first had this issue last night. Unplugging and plugging it back in fixed it at the time. Then this morning, I couldn't get it to charge at all (replugging it in multiple times) via AC or USB (though it did recognize the other USB things like it should). I managed to find a dock in stock nearby finally and picked one up today. Plugging the tablet into the dock charges off the dock like it should, and plugging in the dock charges it like it should. Now, miraculously, when I unplug the tablet from the dock and plug it back into the wall via AC, it works again.
So, don't know what exactly the issue is, or how exactly to fix it, but at least it seems to have fixed itself for the moment. And, now I have the dock if this happens again
hey there. i took the tablet to the service but to my luck the unit is flagged as 'defective on arrival' and I had to return it. I guess it was a ahrdware issue. I could not take a new one since the reseller was out of stock of TF-201. I am waiting for it to become available.
Wow - my tablet would not charge at all last night as I ran out of battery. I tried all the outlets in my hotel room and my PC, but it just seemed like the charge port was dead. I noticed that the trim around the charge port was a bit deformed, so the plastic part that abuts the bezel was not straight.
Anyways - I get to the office this morning and plug it in and now its charging - whew! This is eventually going for RMA since the HDMI is completely dead, and now it does seem the charge port is a bit loose. I am concerned it will happen again just when I need it!
Very frustrated with the quality issues - it's just harshin' my buzz with this tablet.
I've switched through three different primes (with issues unrelated to this) but I seem to notice that all of the chargers are like this. It seems like a security feature or bug (not sure) but if you keep the charger plugged into the outlet, it auto shuts off the charging adapter after being plugged in for a prolong period of time. If you take the charger out, leave it unplugged for an hour or two, then plug it back in. It will work again. All three of the primes I got do this. So I just remember to unplug the charger and don't leave it plugged in and the issue doesn't seem to happen anymore.
btw just a heads up:
- USB won't charge on computers unless your usb port is usb 3.0. If your usb is 2.0 it will only charge on idle (which you won't be able to tell really)
- Dock won't charge the tablet unless the tablet runs around 75% battery (sometimes higher sometimes lower) its in the FAQ
Cayniarb said:
Okay, I first had this issue last night. Unplugging and plugging it back in fixed it at the time. Then this morning, I couldn't get it to charge at all (replugging it in multiple times) via AC or USB (though it did recognize the other USB things like it should). I managed to find a dock in stock nearby finally and picked one up today. Plugging the tablet into the dock charges off the dock like it should, and plugging in the dock charges it like it should. Now, miraculously, when I unplug the tablet from the dock and plug it back into the wall via AC, it works again.
So, don't know what exactly the issue is, or how exactly to fix it, but at least it seems to have fixed itself for the moment. And, now I have the dock if this happens again
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This is the exact replication of what's occurring with my TF201 with the exception that it is still not charging directly plugged into the tablet after I remove from the dock.
weird trick
I think this might be due to how some devices recognize power, i have the same issue with my iPod touch. I found that if you take the charger wire with adapter attached and plug that into the tab, then plug that into the wall it should normally work. My brother was having this issue also with his dock not charging, and this method makes it work.
Well, called ASUS support and got an RMA to send it in. Apparently something's wrong.
Related
Today while I was plugged in I noticed my TF was not getting charged. I checked all the connections, rebootedthe device, and still no luck. I plugged it into my laptop and it was recognized as usual, and even charged up 1% over 10 minutes. I then plugged it into an old iphone charger and it charged a bit faster.
I tried the Asus AC adapter again and it didn't work. I called Asus and explained the issue. I was told I could order a new charger through estore.asus.com. Of course they don't have them in stock. I called the store and they recommended I contact customer support again. I called them back and they said my only option was to wait until the estore got them in stock. They said I couldn't RMA the Adapter at all. The rep said he couldn't confirm if the adapter was covered by the warranty!
I'm really frustrated right now, sorry for venting.
rcm_rx7 said:
Today while I was plugged in I noticed my TF was not getting charged. I checked all the connections, rebootedthe device, and still no luck. I plugged it into my laptop and it was recognized as usual, and even charged up 1% over 10 minutes. I then plugged it into an old iphone charger and it charged a bit faster.
I tried the Asus AC adapter again and it didn't work. I called Asus and explained the issue. I was told I could order a new charger through estore.asus.com. Of course they don't have them in stock. I called the store and they recommended I contact customer support again. I called them back and they said my only option was to wait until the estore got them in stock. They said I couldn't RMA the Adapter at all. The rep said he couldn't confirm if the adapter was covered by the warranty!
I'm really frustrated right now, sorry for venting.
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Man that sucks & what a ****. Try calling again & hope you get a better CS rep. GL to you.
Apologize for asking a trivial question; have you made sure that the wall adapter has locked into the charger correctly? There are two prongs in the adapter that need to click into the charger unit. I ask since I had a hard time figuring this one out
Does your TF battery discharge when plugged in? I have noticed others on here and some other sites talking about a charging problem. I got my TF today and plug it in right away since it talks about charging for 8 hours. It went from 35% to 100% pretty fast. After it got to 100 I put it on the dock and plugged the dock in. At some point the dock got a green light. At that point I hit the battery icon and saw it said 98%. It has stayed there for the last three hours with everything plugged in. The thinkpad I have at work has a preset threshold for when it starts charging. Supposidly this is for the battery health. I wonder if the TF wont start charging until it drops to a certain level. Even though my TF doesn't show charging at 98% if plugged in directly or through the dock if the dock is plugged in the dock shows a green light.
fonze73 said:
Does your TF battery discharge when plugged in? I have noticed others on here and some other sites talking about a charging problem. I got my TF today and plug it in right away since it talks about charging for 8 hours. It went from 35% to 100% pretty fast. After it got to 100 I put it on the dock and plugged the dock in. At some point the dock got a green light. At that point I hit the battery icon and saw it said 98%. It has stayed there for the last three hours with everything plugged in. The thinkpad I have at work has a preset threshold for when it starts charging. Supposidly this is for the battery health. I wonder if the TF wont start charging until it drops to a certain level. Even though my TF doesn't show charging at 98% if plugged in directly or through the dock if the dock is plugged in the dock shows a green light.
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Yup. Devices will only start charging at 89-90% until full. If you disconnect the charger before it's full, most will not continue charging, until again depleted below that threshold.
OP, try turning the device off completely with the cable out (hold the power button for about 15 seconds). Then, when off, and the cable plugged into the charger, plug the charger in to the device. If the charger is working, it should power the device on, and hopefully, you'll see the charging icon.
rcm_rx7 said:
They said I couldn't RMA the Adapter at all. The rep said he couldn't confirm if the adapter was covered by the warranty!
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Don't know where you are in the world but in the UK they _can't_ exclude an integral part like that from the warranty. If the person on the other end cant verify if it's under the warranty I suggest you tell them to get someone that can. their lack of internal communication is not your problem.
I got the same problem.
I got my Transformer last week and I encountered the same problem. When I first called the Asus support, the guy told me that my option would be to send the whole thing to them because I did not know at that time that it was the adapter. I told him that I would return the machine to the store that I bought instead. Then, I started testing by plugging it to my PC and it worked. I also plugged a USB light to the Asus adapter and it did not do anything, so I called them back the next day. I got a better support person this time and he told me to send the adapter back to them. I got the RMA number. I know that they probably don't have the replacement yet so I will have to wait and see.
In the mean time, I find out that the iPad AC adapter will charge the Transformer a bit faster than plugging into a computer. However, it is still not that fast. It takes several hours before charging from 60% to 100%, but it is not too bad. I will have to leave with it until I get a replace adapter.
I have tried completely powering the tablet off and plugging it in, it does nothing. The adapter worked fine for about a week, but now it's toast. I'm going to try and call Asus again today and see what I can do. It's sad that others have had the same issue!
I'm going to try and find an iPad charger in the meantime.
Replacement adapter?
As I said before, the iPad AC adapter will charge the transformer but it will be slow. I tried to find a replacement adapter but I could not find anything that will provide 15V and 1.2Amp. I think the iPad adapter will provide 5V and more than 1.2Amp. Does anyone know an AC adapter that will provide more voltage?
FYI I've tried emailing Asus about getting a spare power adapter. They weren't particularly helpful:
The Travel kit is currently not available for purchase. Unfortunately we can not give a time estimate when this product will be available for purchase. For availability and price please contact your local retailer.
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kunrj said:
As I said before, the iPad AC adapter will charge the transformer but it will be slow. I tried to find a replacement adapter but I could not find anything that will provide 15V and 1.2Amp. I think the iPad adapter will provide 5V and more than 1.2Amp. Does anyone know an AC adapter that will provide more voltage?
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Even if you happen to find a 15v PSU with a USB connector on it it's unlikely to work as it would nee dto put that 15v on the right pin. The USB3 socket is not supposed to have 15v anywhere so the pinout can't be anything like a standard, they just happen to be rolling in 2 uses (USB sync/+15v Power) into one port.
Information of PSU model with known fault here:
http://forum.xda-developers.com/showthread.php?t=1081435
C series serial number prime worked for three days now won't take a charge. Device will connect to pc or mac via cable, just won't take a charge. Any ideas for me?
askmattrix said:
C series serial number prime worked for three days now won't take a charge. Device will connect to pc or mac via cable, just won't take a charge. Any ideas for me?
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there have been other threads about this. usually its the charger overheating and putting it in a ziplock in the freezer, resets it.
Mine did that too, just leave the charger and everything unplugged from the wall for a day. That fixed mine.
Sent from my ADR6425LVW using XDA Premium.
The other issue I've seen is poor contact in the USB socket on the wall adapter. I had to unplug the usb cable from the wall adapter. Then, look at the usb socket on the power adapter. The gold pins are the usb contacts. Directly opposite of them, there should be two silver prongs. I had to use a small flat blade screwdriver to pry both of them out a little further to ensure they did their job of firmly pushing the usb cable against the socket's usb contacts. Once I did, my TF201 was able to get charge from it, again.
If you decide to replace the wall charger, I believe Fry's and Office Depot stock the asus charger.
Same thing for me.. PC recognizes it as a media device, but will not charge with wall charger. Wall charger works with my HTC Phone, so it works.
I don't think it has anything to do with the latest update, since the Dock wont charge either, and there's no OS in that, right?
Just experienced this today. I have had it unplugged for about 10 hours now, we'll see if it charges.
I had the same issue few days after I got my prime. I connected my sgs to the charger and it worked. Then connected the prime and voila-works.
askmattrix said:
C series serial number prime worked for three days now won't take a charge. Device will connect to pc or mac via cable, just won't take a charge. Any ideas for me?
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Which C model do you have? C1,2,3? Just asking.
Johnny0906 said:
Which C model do you have? C1,2,3? Just asking.
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C1. There are some good suggestions here I need to try.
Wrap it in a towel and bang it against a table. That will fix it usually. Then get some pc heatsinks and some arctic silver adhesive and you can attach them to the charger to keep it from happening again.
The plug has two options, 5V (standard for USB?) and 15V. I used the plug on my old HTC phone (Ozone) and then plugged it back into my Prime and it worked. Thanks for the great tips guys.
Since the charger works in two modes, I wonder if some charges became confused and started dishing out 5V when they should be dishing out 15V. Thoughts?
G37 said:
The plug has two options, 5V (standard for USB?) and 15V. I used the plug on my old HTC phone (Ozone) and then plugged it back into my Prime and it worked. Thanks for the great tips guys.
Since the charger works in two modes, I wonder if some charges became confused and started dishing out 5V when they should be dishing out 15V. Thoughts?
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Hi, I got the same problem. The charger indeed seems to be stuck in the 5V mode, since, when plugged in the tablet does get charged, even though it is not indicated, but very slowly. It is charging as if it is plugged in to a pc.
I tried plugging it into (old) phones, but I still can't seem to get it to switch back to the 15V mode.
The freezer didn't help either.
Any other suggestions?
I waited about 4-5 hours before plugging into my old phone. My other suggestion is to allow the phone to charge for a short bit (30 minutes) unplug and wait, then plug into your Prime.
I have a feeling that its a transistor toggle that isn't flipping at the correct voltage.
I've had the same problem yesterday. In my case the problem was with the charge socket on the keyboard itself. Some copper pins were deformed and that stopped the device charging. I took a magnifying glass(also for checking if any of the copper pins are bend) and a small tool to bend them back. After this it charged again. Hope this helps.
My charger suddenly stopped working from today. The Prime is detecting the connection as the screen turns ON but it is not charging. I charged my sensation using the same adapter and USB cable and it is working fine. Why can I not charge Prime via PC like phone? Is it possible? I am in India and not sure if the power adapter is easily available as Prime is not yet launched in India.
Kindly suggest.
Thanks in advance.
Hi,
I've started to have this problem today, plug it in and it does come up with the charge icon but it doesn't charge - or doesn't seem to.
However I left it connected last night from midnight until 8am this morning and it went from 13% to 17% so it is charging VERY VERY slowly although the unit doesn't actual seem to think it is.
I have it plugged in to my phone right now and its working perfectly, I borrowed the charger to my g/f last night to charge her iphone and i'm thinking this might have done something to flip the voltage as since then it isn't working.
Anyone have any ideas on this??
Kevin
thornd7 said:
The other issue I've seen is poor contact in the USB socket on the wall adapter. I had to unplug the usb cable from the wall adapter. Then, look at the usb socket on the power adapter. The gold pins are the usb contacts. Directly opposite of them, there should be two silver prongs. I had to use a small flat blade screwdriver to pry both of them out a little further to ensure they did their job of firmly pushing the usb cable against the socket's usb contacts. Once I did, my TF201 was able to get charge from it, again.
If you decide to replace the wall charger, I believe Fry's and Office Depot stock the asus charger.
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I had this problem a couple of weeks ago and completed the same as above works well
Gilbo12 said:
I had this problem a couple of weeks ago and completed the same as above works well
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But if the charger works fine when charging a phone it cant be the connection at fault..
It does seem to me that the power it is outputting has dropped especially the I managed to gain 5% over the course of a night where WIFI was off and screen was off even though the charge icon doesn't come up.
Is there a way of forcing the charger back in to 12v mode??
damnit... I had the same problems a few days ago and I thought it was in the cable instead of the charger... not realising the charger has to put out 15v instead of 5v.
Does this mean the Transformer won't charge with for example, my HTC charger?
I totally messed up my cable, because I thought it was broken... when I opened up the USB plug, I noticed the yellow wire was not connected anymore, but this didn't solve anything. Eventually I messed up the cable that bad, that I've ordered a new one from ebay... but when I read this... I should have just banged the charger a few times... shait.
funfair said:
damnit... I had the same problems a few days ago and I thought it was in the cable instead of the charger... not realising the charger has to put out 15v instead of 5v.
Does this mean the Transformer won't charge with for example, my HTC charger?
I totally messed up my cable, because I thought it was broken... when I opened up the USB plug, I noticed the yellow wire was not connected anymore, but this didn't solve anything. Eventually I messed up the cable that bad, that I've ordered a new one from ebay... but when I read this... I should have just banged the charger a few times... shait.
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Has anyone actually ever managed to fix this problem? I've just contacted ASUS about it to see what they say - hopefully they'll ship me out a new charger plug or something, what a useless charger!!
I woke up early, got ready for my work, only to realize my Tablet wasn't fully charged.
then I said eh probably misplugged or something, then I took it and went to my work.
Tonight, I just came back home to notice that my tablet is no longer charging off AC outlet.
I take out the cord and plug the USB; cable seems to be working as my Windows seems to locate the driver fine.
However, I tried plugging the Prime cord to my Droid charger. It seems it's not accepting power. (I can't remember correctly if it did previously.) I also tried plugging my Droid USB to Prime AC outlet. Definitely doesn't charge either. (And same as before, can't remember if it should have)...
What options do I have at this point? I been reading few reviews and it seems that I can only USB charge with tablet off and doing lot of other hexes...
also, is there any way I can possibly get RMA on this dead plug (and possibly dead cord), possibly? Anyone had this problem and tried it? I looked up and seems plug + cord is around $40...
Check if your tablet starts smoking. Other people have had that happen to their cords.
Sent from my tablet thing with XDA Premium.
I tried to plug into my prime to charge as I usually do when it gets low on battery and it refused to detect that it was plugged in. I've tried with multiple outlets and yes I am using the official asus wall charger and cable. It only charges very, very, very slowly if the tablet is off and plugged into the wall charger. In no case does it detect that it is actually plugged in though.
I see that there is a system update, not sure if that would fix it since I can't do it because I'm at 8% battery currently.
I'm on 9.4.2.14 right now
thanks in advance
I just updated this morning to the .15 and now I can't charge, so don't know if that will help you. Same as you I tried multiple outlets and nothing; reboot didn't help either. Prime was working great for me for what I need, now this. Will try the charging while shutdown. I see an RMA soon. Charging while off only is not an option, it's an inconvenience.
Sent from my Transformer Prime TF201
I have had the same problem after receiving .15 this past weekend. I have tested other cables and wall chargers and know that's not the issue. I also did a factory reset to no avail.
Any ideas?
Check the charger or get a new charger.
I've been having the same problem.. tablet will not charge either. Luckily or me i scored on a dock. And now the only way my tablet will charge is when i connect the tablet to the dock and use the wall charger to simultaneously charge both tablet and dock. Without dock, tablet will not charge. Maybe trickle charge only when screen is off. Gotta me a software glitch. Can't be usb cable or ac adapter as with dock, everything works perfectly.
Im having the same problem. Prime doesnt charge while connected to wall charger...it seems to only charge when the screen is off and connected to a pc. When this first happened a few days ago i left the prime powered off and plugged it into the wall to charge overnght which it actually charged but it hasnt charged again since. So ive been at 10-20 all day and barely get to use it so it wont die as i checked the battery stats and it seems the prime is consuming a whole lot of power in a short amount of time...if its not the charger then im screwed since i unlocked the bootloader...this issue needs attention as its effecting multiple users so hopefully someone somewhere can either confirm that they tried using a new charger and what the results were or someone else has a charger that you know works and try using your prime on another persons tablet..it seemed to have started when i had "switch me" app installed and running a guest profile i noticed my pc stopped communicating with my prime and it all went downhill from there..
It's definitely not the charger in my case. I'm waiting to hear back from Asus, I'll update when I get their response.
Haven't used the prime much since picking up my SGS3, but I powered it on and plugged in the charger. It made a audible 'ding' and flashed a picture of a battery. Didn't think much of it but about 15 minutes later noticed it wasn't charging. Checked settings-->Battery and said not charging. Plugged into usb and pc recognized it, popped up the auto play and the prime did the same screen flash of a battery and ding. Can transfer files fine, did a few pics. But still not charging according to 'battery' in settings and % is still dropping .... Any ideas?
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
bigblue95z said:
Haven't used the prime much since picking up my SGS3, but I powered it on and plugged in the charger. It made a audible 'ding' and flashed a picture of a battery. Didn't think much of it but about 15 minutes later noticed it wasn't charging. Checked settings-->Battery and said not charging. Plugged into usb and pc recognized it, popped up the auto play and the prime did the same screen flash of a battery and ding. Can transfer files fine, did a few pics. But still not charging according to 'battery' in settings and % is still dropping .... Any ideas?
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
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Click to collapse
I have the same issue, try charging it through the keyboard dock. I find if I plug it in directly to the tablet it trickle charges but says its not (will only go up slowly and only when screen is off possibly even the tablet itself), its to do with the charger, it is has some sort of transistor to switch it between 5V and 15V so I've heard, prime requires the 15V, but it gets stuck in 5V - only plugging it in to the keyboard dock works for me.
Whether what I've said above is true I don't really know I'm only going off what I've read, if anyone has a fix for this please mention it!!
Kevin
kevinm2k said:
I have the same issue, try charging it through the keyboard dock. I find if I plug it in directly to the tablet it trickle charges but says its not (will only go up slowly and only when screen is off possibly even the tablet itself), its to do with the charger, it is has some sort of transistor to switch it between 5V and 15V so I've heard, prime requires the 15V, but it gets stuck in 5V - only plugging it in to the keyboard dock works for me.
Whether what I've said above is true I don't really know I'm only going off what I've read, if anyone has a fix for this please mention it!!
Kevin
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Well before I went to bed last night, I plugged in my prime to my PC, powered off and went to sleep. Wake up, turn it on, and I'm still at 38% and dropping. Hasn't charged at all. But PC see it just fine still. I'm baffled! Anyone else have some insight?
When you guys charge your prime, do you get a battery image flashed on the screen? It's maybe 3" diagnal and an audible 'ding'? Last time I used it, it updated the firmware to the .28 and I really didn't use it after so I don't remember how it acts when it get plugged in for charging.
bigblue95z said:
Haven't used the prime much since picking up my SGS3, but I powered it on and plugged in the charger. It made a audible 'ding' and flashed a picture of a battery. Didn't think much of it but about 15 minutes later noticed it wasn't charging. Checked settings-->Battery and said not charging. Plugged into usb and pc recognized it, popped up the auto play and the prime did the same screen flash of a battery and ding. Can transfer files fine, did a few pics. But still not charging according to 'battery' in settings and % is still dropping .... Any ideas?
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
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Click to collapse
bigblue95z said:
Well before I went to bed last night, I plugged in my prime to my PC, powered off and went to sleep. Wake up, turn it on, and I'm still at 38% and dropping. Hasn't charged at all. But PC see it just fine still. I'm baffled! Anyone else have some insight?
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Click to collapse
kevinm2k said:
I have the same issue, try charging it through the keyboard dock. I find if I plug it in directly to the tablet it trickle charges but says its not (will only go up slowly and only when screen is off possibly even the tablet itself), its to do with the charger, it is has some sort of transistor to switch it between 5V and 15V so I've heard, prime requires the 15V, but it gets stuck in 5V - only plugging it in to the keyboard dock works for me.
Whether what I've said above is true I don't really know I'm only going off what I've read, if anyone has a fix for this please mention it!!
Kevin
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bigblue95z said:
When you guys charge your prime, do you get a battery image flashed on the screen? It's maybe 3" diagnal and an audible 'ding'? Last time I used it, it updated the firmware to the .28 and I really didn't use it after so I don't remember how it acts when it get plugged in for charging.
Click to expand...
Click to collapse
After.28 was pushed I noticed my prime was NOT charging. I checked the connection, the ends, the port...nothing.
I then called Asus and they told me to plug into PC and let it charge to over 50%...It sat uninterrupted connected to my PC for over 10 hours...this is a very slow charge...they then told me to call back and they would basically wipe data through Android Recovery to find out if it's software or hardware related.
After it charged to 75% on my PC I unplugged and reconnected AC charger....it worked. I didn't wipe data, I think it just needed that trickle charge. Similar to the first charge 8+ hours...
Good luck with it, I'd call Asus...I'm just telling you what they told me...I never called back cause it worked...
Yes it shows when you connect AC adapter, and yes it's audible tone
DROID DOES, Apple did...like I forgot when
I had a very similar issue, and really got nervous when my apple USB charger still didn't do more than a trickle. Then I read the power specs on the asus charger and realized it's got more power, so I went and bought another charger and sure enough that worked right off the bat.
Once it charged I did some troubleshooting and realized that the power brick itself (even though it wouldn't stay together from the time I got it) was fine, the cable was the problem. My cable appeared to be in mint condition, no visible damage or bent pins or anything, transfers files but only trickle charges. Finally ditched it and now I have one good USB cable and two USB adapters.
I got my charger for $25.00 at office depot I think, 30 was regular and it had a discount or something I believe.
reset switch
I ran into this today again. There is a little hole on the left side of the tablet with a hard reset switch in it. Stick a pin in there (quite deep) and the switch will reset the tablet and it will start charging again. if it fails repeat the procedure.