I'm at a bit of a loss here..
Instead of powering on, the battery light goes *blink* *blink* *LongPause* ..
I have a (3 day old) Archos 101 and updated to the most recent software when it I first powered up the device. I probably drained my battery yesterday when I put it in the night stand drawer while Aldiko was trying to import a fresh ePub file..
When I turned it on this morning, it blinked once and stopped. When I plugged in the charger (figuring the battery was drained) the "blink blink longpause" started. Long pressing the power button stops the blinking. If the power is connected, the power light burns, so I figure its charging. If its not on power, the power light doesnt burn. I tried the "Hold + while powering up" to boot into recovery but that doesnt change anything.
The Archos FAQ said something about charging the battery, but its been charging for about 9 hours now and the device still wont turn on.. (Green light still burns continuously while charging, not when disconnected) My XDA forums search didnt turn up any results..
Anyone got a clue what this means, what I can do or whatever? Tnx
Maybe the screen froze. Try resetting it by holding down the power button for ten seconds or so. If you're charging it at the same time, it should boot right back up after the reset is complete.
Sent from my A32
Yes, I tried that :/ That's what I meant by long pressing the power button. It changes the blinking pattern to just the burning power led..
Thanks for the tip though!
Sent from my HTC Magic using XDA App
Give it another shot. Disconnect the plug. Hold down the power button for a little over 10 seconds. I would do like 15 in my head. Wait a few seconds after that and press the power button quickly once. If you get the steady green light just wait. Dont keep pressing it. You should eventually see the Archos splashscreen. I have had this happen on several occassions when the system has been idle for a while with the screen off. Hope it works.
Ok; I did that.
Except that when I push the power button that last time to have it boot up; the power light just flashes once. I didnt touch it to be sure and it doesnt start.
When I plugged in the power supply after that, the *blink blink longpause* resumed.
When I hold down the power btn now, it reverts to continuous burning green power led.
Its been charging for more than 24 hours now.
This sounds like what happened to mine. it happened after about 3 days, too. I finally got my replacement the Tuesday before Christmas.
If you get it powered up, get your stuff off & clean up your personal info (something I wasn't able to do.
From my post on AchosFans Forum:
For several days my Archos wouldn't take a charge. I didn't think anything about it the first day...stuff happens. After using it the next time, not really thinking there was a problem I plugged it in (and of course it turned itself on again). So this morning it only had 8%. I messed around a few minutes before work resetting it & such - checked setting>about>battery stats and it said "charging" and 0% battery. When I came home this evening it still said "charging" & 0% battery. It then shut down (with a not-normal screen flicker) the first time I unplugged it (hoping to cycle it or get lucky) and it is now a brick. When I plug it in now the charging light did a fast-double-blink and it it remained dead.
I called Archos & they told me to send it back. She didn't ask for much info before telling me to send it, which I took to mean that it is a known issue.
Same happened to me
The same has happened to me after the archos 101 drained its battery fully. I think the firmware has a flaw where it lets the archos drain its battery too far. In that state, hooking it up to the charger wont make it start charging all the time.
I had the blink-blink-blink problem also, even after it had been on the charger for hours. Finally it started working (and charging! )again after lots of 15-second Powerbutton presses, some in combination with Volume Up or Volume Down, and some with and some without the charger connected. Suddenly it turned on (showing 0% charge in the Settings, Information panel indicating it had fully drained and hadn't been charging in the previous hours) . I advice you to keep trying pressing the Power button 15 seconds with the charger connected, and experiment with pressing it in combination with the volume button, followed by a short Power press to boor the Archos.
In the mean time (till a new firmware comes), i make a habit of not fully draining the Archos (i will install Tasker to let it shutdown at 10%) , and checking if the green led comes on after plugging in the charger. Only when the green led is on, it's really charging. And it should start blinking after a few hours to indicate its full.
My wife has a chinese android iPad clone (a Flytouch II) and guess what? It's also picky at charging and turning on.
The Gravity reply had me scared (tnx though) but I'm glad to report that pwhooftman's post helped!
I plugged it in, put a movie on and started trying to reset/start it. It happened reasonably quickly after that.. I pressed the power button while it was off power, the power led flashed once as before. I plugged in the power. The green light lighted up. I pushed the power and + for 15 seconds, and pressed the power button once shortly. Unlike the other times, the blinking pattern didnt start and the green light kept burning. Hopeful, I put it down and waited - as the FAQ said it would start when it d charged more. Finally after a while, I pressed the power button and it booted. Not exactly exact science, but Im just happy that it works again :/
I guess the "blink blink longpause" means something like "I know I've got power but I cant seem to load my battery" - Archos should have this info in their manuals.
Thanks guys
G3n said:
The Gravity reply had me scared (tnx though) but I'm glad to report that pwhooftman's post helped!
Thanks guys
Click to expand...
Click to collapse
Nice to know I can scare people...and it isn't Halloween!
I tried everything I could think of to get it to take a charge, with no luck. The problem I had with mine was the times it wouldn't take a charge BEFORE I had drained it - that is why it got drained in the first place.
I hope it was only mine!
He s at it again. Drained to 3% and now it wont charge anymore. *sigh*
except he wont even do the blinking anymore now.
Seems to be a fairly common issue with these tablets :/
Same thing was happening to me too. Dunno if this will work for people, but here is how I fixed mine.
Hold your finger on the power button for 10 seconds while the blinky light is on. This should stop the light completely.
Then plug the charger in. This gave me a continuous light rather than a blinky light. Leave it like that for a couple of hours and then try powering it on again.
Hope this works for others.
Had this happen to me once so far. Seems to have to do with it going into a sleep state or something. If I leave it for long and the screen turns off. Sometimes it won't come back up without first holding down the power to shut it down (even though I can't see anything on the screen) and then waiting to boot back up. I had to plug it in, get the steady light and then power on and it worked.
OK, I know this sounds weird...
But what's the temperature of the A101 like?
I had an identical problem a short while ago, and a forum post suggested that the tablet could be too cold. I thought it was a total shot in the dark, but I wrapped the Archos in a quilt for a few minutes, and amazingly enough, it popped back into life with the charger plugged in, and has been pretty fine since then.
To be fair, it could be one of three things: (i) temperature is the issue, (ii) coincidence, (iii) a bad connection in the pins/socket of the adapter input on the Archos 101 which just needs 'jiggling.'
I have also noticed that if I charge the Archos while it is in standby, I never get more than 92-94% battery. If I shut it down, plug in, then shut it down again when it restarts on power supply insertion, I can usually get 98% battery, at the least, sometimes 100% battery.
I agree, we shouldn't have 'quirky' devices, or have to wait for firmware to fix them, but other device makers have had similar problems in the past with battery reporting, until appropriate firmware fixes.
it happened to me last night frustrated the heck out of me couldn't get it to turn on no matter what i did, so i took it back to pc world and the guy said
"what would you like to do, out of curiosity do you like it?" I replied no and he said "then ill refund you"
i then paid the extra on a galaxy tab and not looking back the archos was a complete pile of sh!te! I almost cried when i turned it on and spent the next two months convincing myself i actually liked it.
its woefully made, cheap and tacky, screen is pathetic and the memory appalling.
i know its cheaper than tab and iphone but for 270 it should still be fit for purpose and this is not it's the worst gadget ive ever owned by a long long shot, i didn't even show it off at work because i was so embarrassed at how bad it was.
G3n said:
He s at it again. Drained to 3% and now it wont charge anymore. *sigh*
except he wont even do the blinking anymore now.
Click to expand...
Click to collapse
So, how did the story end?!? Did it survive?
Ok...
I kid you not, i've tried warming the archos up with a hot water bottle for several seconds and that did the trick appearently...
Had the same problem.
TheTen said:
OK, I know this sounds weird...
But what's the temperature of the A101 like?
I had an identical problem a short while ago, and a forum post suggested that the tablet could be too cold. I thought it was a total shot in the dark, but I wrapped the Archos in a quilt for a few minutes, and amazingly enough, it popped back into life with the charger plugged in, and has been pretty fine since then.
To be fair, it could be one of three things: (i) temperature is the issue, (ii) coincidence, (iii) a bad connection in the pins/socket of the adapter input on the Archos 101 which just needs 'jiggling.'
I have also noticed that if I charge the Archos while it is in standby, I never get more than 92-94% battery. If I shut it down, plug in, then shut it down again when it restarts on power supply insertion, I can usually get 98% battery, at the least, sometimes 100% battery.
I agree, we shouldn't have 'quirky' devices, or have to wait for firmware to fix them, but other device makers have had similar problems in the past with battery reporting, until appropriate firmware fixes.
Click to expand...
Click to collapse
G3n said:
I'm at a bit of a loss here..
Instead of powering on, the battery light goes *blink* *blink* *LongPause* ..
I have a (3 day old) Archos 101 and updated to the most recent software when it I first powered up the device. I probably drained my battery yesterday when I put it in the night stand drawer while Aldiko was trying to import a fresh ePub file..
When I turned it on this morning, it blinked once and stopped. When I plugged in the charger (figuring the battery was drained) the "blink blink longpause" started. Long pressing the power button stops the blinking. If the power is connected, the power light burns, so I figure its charging. If its not on power, the power light doesnt burn. I tried the "Hold + while powering up" to boot into recovery but that doesnt change anything.
The Archos FAQ said something about charging the battery, but its been charging for about 9 hours now and the device still wont turn on.. (Green light still burns continuously while charging, not when disconnected) My XDA forums search didnt turn up any results..
Anyone got a clue what this means, what I can do or whatever? Tnx
Click to expand...
Click to collapse
HERE is the FIX ! I am on my second A-70/250 - my wife has the 8gb version, and I thought the 250gb one was simply defective - evidently, this IS a known issue, but it can be fixed, and I sent back my other one without reason
Anyways, no more pity party for me, here is the fix - if you have the flashy-power light dealio going on, plug your Archos into the power adapter, plug the adapter into the wall, and plug in the USB CABLE to the Archos, and to your PC - the Archos WILL pwoer up, when it does, it asks if you wish to mount the USB to copy files, select, "YES" and let it sit and charge ! Now - the REASON it does this is VERY simple, and it kills me to admit that I was killing my tablet all by myself ! Disable the "never off" screen thingy - set it for 10 minutes - (settings - display - screen timeout). Go into your power settings as well - (settings - power management) and make sure there is a checkmark in the deep sleep area ! THAT IS IT ! You are fixed ! Dang... I REALLY wish I would have found all this out before I returned the other one - I had SO much stuff loaded on it ! GAH !! - SenKat !
I got the same problem yesterday, it kept blink blink and could not turn on. After 5 hour charging, I warmed it up by hair dryer and suddenly it's on. Crazy amazing! Hahahahahuahuahuahua.
Temperature is main problem. Try with your hair dryer!!! Heheheheheh
Its sounds unbelievable, but low temperatures are indeed a cause.
Sent from my GT-I9000 using XDA App
my a70 had this same problem, left it rest a whole night, then plugged it in to usb and power (usb 1st) and it booted up, hope this helped
My friend that I bought the Asus prime for, asked me if I could take a look at his prime.
Here is the screnario:
Listening to radio station app, screen went to sleep while the radio was still playing and he tried holding the power button down and nothing worked to reboot or wake up the prime. The Prime was left playing to drain down the battery. It has all its recent updates (.15), not rooted, and not unlocked. When I looked at it, I charged it up, I can see the light and turned green to full battery status. I can feel the prime vibrate as I hold the power button, I tried volume + power hold, tried the hard reset with the paper clip hearing the click next to the sd card slot holding it for 10-30 seconds. The laptop can see the folder in the prime as i hold the power button and also disconnects when i power down. ordered 12-28 from best buy so the return window has expired and its a BC0K serial number.
Anybody find a solution with a black screen prime that just vibrates and can be seen on the laptop before I send it for an RMA?
Was there any shock to the device? A small bump or anything, it sounds like the ribbon cable for the screen has become disconnected, there are some reports of this on the forums.
flyingwolf said:
Was there any shock to the device? A small bump or anything, it sounds like the ribbon cable for the screen has become disconnected, there are some reports of this on the forums.
Click to expand...
Click to collapse
This + have you went into recovery?
maybe try draining the battery again then charging up. ive seen a few post issue like this. if screen connection didn't break, then letting it drain again and charging up might fix it. good luck!
Actually, the prime was already drained maybe a total of 3 times. There was no shock to the device as it was working with the radio app on and when it was being listened to while it was on the bed, the screen went into sleep and could not wake up no matter what button was being pushed so the prime was left to drain its battery. My friend didnt know how to reboot, so he decided to left the battery to drain. Could the radio playing + sleep of death + battery drainage caused the permanent screen sleep? Too bad I dont have the micro hdmi connector to see if i can isolate the screen as the problem.
yup the micro hdmi would help a lot probably. But if your PC recognizes it I suggest you back up data that you need then try to do a blind factory reset so you can get rid of any non oem app installed including that radio app if any of them is whats causing the screen not to turn on.
1. Hold volume down then press and hold power.
2. When you feel it vibrate (this could take up to 10 seconds if the tablet was already on) wait another 5 seconds and then release both buttons.
3. After you release wait another 5 seconds (dont wait too long here or it will reboot on its own if you dont select anything after about 10 seconds) then press volume down 1 time and volume up 2 times.
4. The tablet will factory wipe and after another 10 seconds it will reboot.
If the tablet still wont turn on then you got another issue and that isnt caused by the radio app or any other app.
Didnt work. It just vibrated and the screened stayed black... Im wrapping this puppy up and bringing shipping it to the repair center. Thanks anyways.
Vibrates when power button is held but wont turn on
My Prime also has the basic problem. I use it daily for about 3 to 4 hours, reading replying to e-mails and web browsing. While I was reading, the volume started going up on its own and I noticed that even after I put in standby mode, the battery discharged so I shut it down completely.
After that I could not turn it on. When I hold down the power button it vibrates bit the screen does not come on even after I fully charged till the led turns green.
logical_motion said:
My Prime also has the basic problem. I use it daily for about 3 to 4 hours, reading replying to e-mails and web browsing. While I was reading, the volume started going up on its own and I noticed that even after I put in standby mode, the battery discharged so I shut it down completely.
After that I could not turn it on. When I hold down the power button it vibrates bit the screen does not come on even after I fully charged till the led turns green.
Click to expand...
Click to collapse
Had to RMA back to Asus for them to fix the display and it took about a week. Warranty covered it, but if you do RMA ask them to ship you a shipping label. You shouldnt have to pay for shipping it to them for a manufacturer defect. And take pics and videos of the tablet and packing for your safety. They just need the tablet and nothing else. Good luck
Asus is F-ing with my endorphines...
I've had my TF201 since March 30th. Been using it for 1 week and it suddenly went dead (nothing on the screen, no vibration if I held the power button down). Tried everything I could find on the forums, it didn't work so I sent it to repairs (not immediately, cuz I had more important stuff to do). They kept it for almost 3 weeks, got it back this last Monday (May 21st) and... it died out on me again yesterday night (after just 3 days of use, congratulations ASUS technicians!). I was simply browsing and I clicked on the icon to increase the luminosity to the maximum supported (IPS+, I was charging it at the time) and the screen suddently went black. Like "nothing visible on it" black.
After that, I tried numerous times to reset it (including the volume+power down, according to the indications in this thread) - all I could get from it was the vibration as if it starts. Nothing else popping up on the screen. I plugged it this morning into my computer and it got somehow recognized, cuz my W7 tried installing drivers for it (even tho it had recognized the tablet again after it came from repairs and I already had drivers for it installed) but failed with the error "APX - no driver found".
I've had enough. Two months already and only one week and half of actual use. It's pathetic, ASUS needs to be taught a lesson, so I'm calling Consumer Protection in my country and the European Consumer Protection Comission. All the forums that I've surfed are filled with reports of broken units and ASUS will just tell you "if you have a valid warranty we'll repair it for free". I DON'T ****ING NEED regular repairs every 2 weeks!!! I need a functional tablet that I can use or give me my money back!
I'll post the results of my tribulations here...
I had a user that suffered the blank screen.
When you think it's presumably on. Try a paperclip to the reset hole on the left side. His came back up at that point and hasn't done it again since.
Never had this happen on mine.
Okay, so my prime was on the latest CM10.1 offered here: http://forum.xda-developers.com/showthread.php?t=2053269
I had TWRP 2.5.0.0 on it as well as the corresponding GApps. I did nvflash and everything on my Prime and it was working flawlessly since the day I bought it. I have had ZERO issues and thought it would never brick.
Just a few weeks ago, I began to notice my TF201 acting VERY slow. When I say slow, I mean like opening Solid Explorer, for example, would take a long time. I didn't pay it any mind and continued on watching movies on it, reading books, browsing and just my every day normal usage. Two nights ago, I copied over some files using AirDroid and saw that I had 36% battery left. I left it charging overnight and unplugged it when I woke up. When I came home, it wouldn't turn on. I don't know if my charger is borked and somehow f*ck'd up my TF201 while it was charging, but I can't think of anything else.
I've tried the following:
-plug it in and hold power button
-leave it plugged in to charge some more
-leave it unplugged for a few days to drain and then plug it in, holding power button
-pressing and holding the power button
-holding vol up + power (10+ seconds)
-holding vol down + power (10+ seconds)
-holding reset button (10+ seconds)
-plugging into my computer
The screen just stays off. No vibration or anything. If I look at the power button, it just stays orange, steady not blinking. If I leave it unplugged it goes off. If I leave it plugged, it stays orange never green.
Is my battery done? Fried? By the charger? I have babied this tablet since I bought it. I have a $60 Gumdrop case for it. It is flawless on the outside with zero blemishes. How could this happen? Has anyone else seen this kind of brick before?
Sounds like some sort of catastrophic hardware failure. Slowness and boot failure could be perhaps explained by fried eMMC/SSD but it's strange that it doesn't power on at all. Because of the speed issues you mention that were happening, it doesn't really sound like the battery.
I hope you get it figured out -- have you tried contacting Asus or any tablet repair specialists? Surely someone might be willing to talk some debugging. I take it that it's not under warranty anymore?
mnasledov said:
Sounds like some sort of catastrophic hardware failure. Slowness and boot failure could be perhaps explained by fried eMMC/SSD but it's strange that it doesn't power on at all. Because of the speed issues you mention that were happening, it doesn't really sound like the battery.
I hope you get it figured out -- have you tried contacting Asus or any tablet repair specialists? Surely someone might be willing to talk some debugging. I take it that it's not under warranty anymore?
Click to expand...
Click to collapse
It's definitely out of warranty --both the limited time and the fact it was hacked to the teeth. I'm not as upset anymore about losing that tablet. It barely had any XDA love anyway. Lol. My Xoom is at least still heavily supported by Team EOS and Steady Hawkin.
The reason why I suspect the battery is because of the fact it wouldn't turn on at all. The power button just stays orange. I could be wrong, of course.
I have a Nook Tablet (NT) that is rooted and running CM 10.2. All was well until recently when I noticed that once the battery is drained it'll take almost a day for it to turn back on, most of the time being stuck in a loop where the "battery is too low to power on" screen will appear and reappear. Two days my daughter was using it to watch Netflix and the low battery toast appeared, she plugged it in and the NT shut off. Pressing the power button produced nothing until we unplugged it again. I tried using three different cords including a fastboot cord I made for our KFHD, each time it shut right off and won't start back up. I've tried plugging a cord in without any power and it doesn't have any effect, yet the minute any kind of power is introduced....it shuts off and stays off while plugged in.
I searched Google, read almost every sorta relevant post and have searched other forums as well with no luck. Has anyone had this problem? Has anyone solved it? What could be the problem? Any help is appreciated. :crying:
KFlannigan5 said:
I have a Nook Tablet (NT) that is rooted and running CM 10.2. All was well until recently when I noticed that once the battery is drained it'll take almost a day for it to turn back on, most of the time being stuck in a loop where the "battery is too low to power on" screen will appear and reappear. Two days my daughter was using it to watch Netflix and the low battery toast appeared, she plugged it in and the NT shut off. Pressing the power button produced nothing until we unplugged it again. I tried using three different cords including a fastboot cord I made for our KFHD, each time it shut right off and won't start back up. I've tried plugging a cord in without any power and it doesn't have any effect, yet the minute any kind of power is introduced....it shuts off and stays off while plugged in.
I searched Google, read almost every sorta relevant post and have searched other forums as well with no luck. Has anyone had this problem? Has anyone solved it? What could be the problem? Any help is appreciated. :crying:
Click to expand...
Click to collapse
This is an old post but I'm wondering if you ever found a solution? My kids nook tablet is doing the same thing. Thanks!
mpry1 said:
This is an old post but I'm wondering if you ever found a solution? My kids nook tablet is doing the same thing. Thanks!
Click to expand...
Click to collapse
I have a hunch the battery is starting to fail. It is not a good idea to let the battery get too low, the reason being if it does then the circuity inside tells the nook that the battery is too low to function. When that happens the nook won't power on OR charge quickly. It can only trickle charge, which is why it can take a long long long time to get enough power to turn on.
If this is happening without warning, then it is because the battery indicator calibration is off. If it does flash up a battery warning turn it off right THEN (put it to sleep by pressing the power button once) and plug it in. This should keep it from powering off totally and should charge quickly.
If it keeps happening, it could be the battery needs to be replaced. There are two places to get one that I know of batteryship.com and newpower99.com both seem to come with tools to do the job.
My tablet started doing the odd phantom touches when the battery gets below 23%. I am trying to find a (real) way to calibrate it, but so far no go. But if need be I can just plug it in at 25% or so, as long as it doesn't get any worse. However from what I hear they often do.
Darth Newton said:
I have a hunch the battery is starting to fail. It is not a good idea to let the battery get too low, the reason being if it does then the circuity inside tells the nook that the battery is too low to function. When that happens the nook won't power on OR charge quickly. It can only trickle charge, which is why it can take a long long long time to get enough power to turn on.
If this is happening without warning, then it is because the battery indicator calibration is off. If it does flash up a battery warning turn it off right THEN (put it to sleep by pressing the power button once) and plug it in. This should keep it from powering off totally and should charge quickly.
If it keeps happening, it could be the battery needs to be replaced. There are two places to get one that I know of batteryship.com and newpower99.com both seem to come with tools to do the job.
My tablet started doing the odd phantom touches when the battery gets below 23%. I am trying to find a (real) way to calibrate it, but so far no go. But if need be I can just plug it in at 25% or so, as long as it doesn't get any worse. However from what I hear they often do.
Click to expand...
Click to collapse
The problem you experienced with NT CM flaky battery reading and with NT going beserk at low battery reading was discussed at http://forum.xda-developers.com/showthread.php?t=2551512.
FWIW there are some battery-calibration apps but I have not tried them.
I'm starting to think it's a hardware issue. I have replaced the battery twice and did a clean install of liquid smooth and it still shuts off completely when it gets plugged in. It will fully charge while plugged in but it will not turn on at all while power is going to the battery through USB. Once unplugged it will boot normally. Really strange.
digixmax said:
The problem you experienced with NT CM flaky battery reading and with NT going beserk at low battery reading was discussed at http://forum.xda-developers.com/showthread.php?t=2551512.
FWIW there are some battery-calibration apps but I have not tried them.
Click to expand...
Click to collapse
I will check out the thread, but I am running the B&N stock 4.3 currently (and rooted).
As many of us are aware, there is a issue that can occur with a Nook Tablet going crazy with phantom touches. Essentially it looks as if you are tapping on the screen when you are not. It usually happens very quickly, one minute ok, the next everything is getting tapped all over the screen. This can cause data loss as the device thinks you are touching the screen. For example a file you were working on may abort before saving as it thought you hit "close".
I have been bugged by this issue on and off. Some people replace batteries to fix the issue, and while that will fix it 99% of the time, there is an easier (and cheaper way).
The problem appears to be the newton loses battery calibration. There has been talk in the past of deleting the battery file via CWM or other Android app that deletes this file (or even doing it manually with a file browser app, which may need root access). This battery file is only data since the LAST time you charged the device. Not the calibration data. And this file is deleted automatically everytime you plug it in to charge.
How I fixed it
After a lot of research I found that many Android devices there often a way of recalibrating the battery charge system. The steps are:
1. If you get phantom touches hit the power button as fast as you can to put it to sleep ande prevent anything occurring you might not want (aka a file deleted you wanted to keep etc).
2. Charge the battery to full, until the green light is lit on the charge indicator located on the Nook Tablet charge cable
3. Unplug the device from the charger
4. Use the Nook Tablet for 20 minutes with a high drain app (aka watch a video)
5. Plug the Nook tablet back into the charger and wait until the light turns green again.
6. Repeat steps 2-5 several times. I would suggest 3 or 4.
7. See if you get phantom touches again when the Nook Tablet power gets low. If you do try steps 2-5 again several more times.
In my experience after a few times of this, I no longer had the phantom touches issue.
Why it happens
I am not sure all the details as to why, but one time I do know for a fact that one time it happened after I had the tablet on the charger with a full charge (I had not got around to unplugging it yet) when the power to my home failed. It came back on a few minutes later but that night when I was using the device I got phantom touches at about 50% power left. Which I never had before. After doing the above method it is working fine again even down below 15% power (which I never let it get that low normally).
I suspect that the power failure caused the charger system to recalibrate and since the battery was already at full, messed up the whole system. I also would NOT leave the Nook Tablet on a charger for long periods. If it sits at 100% for a long enough period it is possible for the battery to drop down a little and start charging again. This could start a recalibration again, bringing back the phantom touches issue.
I have not posted until now as I was not certain what fixed it before. If it was the charge to full, use for 20 minutes, then charge again method or turn it off then charge method worked. I tried several before and wasn't sure which one worked. Now I can say the put to sleep, charge, use, charge again method does work. But don't turn off the device then charge if you can help it. If the Nook tablet is powered all the way off (not sleep) doesn't seem to do a battery recalibrate. Or at least my best experience is to plug it in while in sleep mode, charge to full (green light), use for 20 minutes, and then charge again.
Sorry if this has been posted before. But a quick search didn't reveal any hits.
UPDATE:
Upon further tests, often powering off the device fully (holding power for 30 seconds or pressing for 5 and saying yes to the popup to power off), then plugging it in, letting it turn on and charge to full will fix the problem as well.