Database Users

[Q] Is my HD2 broken?

Hi everyone. New here so I look to you for answers. I bought my HD2 about 2 weeks after they came out. Used it for about a month and started using a couple different phones for a while. My HD2 sat on my desk with the battery out of it for about 3 months before I decided to use it again last night. Last night I plug it in to charge and no charging light and it wouldn't turn on. I let it sit all night and still nothing in the morning. I took it to the t-mobile store and they tried a different battery and charger and still nothing. They suggested to call customer service since it is still under warranty. I have not flashed any ROMs or or changed it from stock in any way. Any suggestions before I go the customer service route? I searched the forums and could not find any answers to my specific issue. I appreciate any help you guys can give me. Thanks!

What kind of charger are you using? It sounds like your battery is completely dead, and to get it to charge you MUST use a charger that outputs 1amp. The stock charger provides this, but most 3rd party ones don't. Try using the stock charger for a couple of hours, and if that doesn't work, you will probobly need to jump start your battery using a common 9-volt battery. If it comes down to that let me know and I can walk you through the process.

I used the stock charger that was packaged with the phone. I think you are right that it is completely dead. How would I go about jump starting it? Thanks again!

Its fairly simple really. You need a 9 volt battery, and 2 peices of wire. Simply attach one end of each wire to the 9 volt somehow(tape, wrap the ends around it etc...) and then put the other ends of the wires to positive and negative on your HTC battery, observing positive 9 volt to positive HTC battery of course. You will more than likely have to hold the wires to the HTC battery, which is fine, just dont let them touch each other or you will risk shorting out and/or bursting your 9 volt. Anywho, hold them there for 2-5 minutes. If your HTC battery begins to get warm STOP immediately, let it cool down, then put it back into your HD2 and charge it with the stock charger. While the 9 volt battery doesnt supply as much amperage as the charger, it does provide more volts of course(9-ish versus 5) and can cause the battery to overheat and in some cases melt. After no more than 5 minutes, your battery should have 2-3% of a charge, which is enough for it to be recognized by the phone, and enough for it to be charged by the wall charger. The overcharge preventing circuitry is the reason why you sometimes have to do this trick, if the battery becomes completely discharged(less than 0% power) the overcharge circuitry recognizes it as being fully charged, or faulty and therefore will not supply it with power. Try that, and see what happens! And if nothing does, let me know and I will tell yah the next step.

Worked perfectly. Thanks so much for your help. I knew I'd find the answer on XDA.

No problem friend, glad I could help you get it back up and running!

ashasaur said:
And if nothing does, let me know and I will tell yah the next step.
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kalel8145 said:
Worked perfectly. Thanks so much for your help. I knew I'd find the answer on XDA.
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Click to collapse
shame! i wanted to know the secret next step! hehehe

Battery status stuck at 0%

Recently I purchased my first tablet, ofcourse the Nexus 7 32 GB and I am very happy with it.
As soon as I started it, I received the notice that an update was ready to be installed, which I did (4.2).
After that I got another notice to install 4.2.1.
So far so good, everything worked very well....also the normal charging with stock charger and cable.
Then after about 1.5 weeks I noticed that my battery level didn't went down from 100% to xx%, even after playing games for several hours.
I am absolutely sure this wasn't the case before, I did charge well and battery-level went down normally.
So because I couldn't tell if the battery was empty or not (because it kept being on 100%), the Nexus went down ofcourse.
Well, I plugged in the stock charger and cable and started to charge it.
Battery icon (when Nexus is off) nicely went from first quarter (25%) to full (100%) when I unplugged it.
It booted up nicely, but then I noticed that the battery-level showed 0% and kept stating 0%. Even again after playing games for several hours (GTA4 and RR2).
Normally it should decrease in battery-level ofcourse.
So now I'm stuck at battery-level 0%, but strange thing is that the Nexus works fine besides this small problem.
I can charge it, play with it for several hours, reboot, deplete the battery, etc....
Only thing is I can't see the actual battery-level which is very annoying, since I never know when the battery is empty and needs to be recharged.
I searched internet using Google and also here on XDA, but never found a solution.
What I already did was :
1. Reflash stock ROM, using the Nexus Root Toolkit.
2. Flash CM 10.1 with CWM Touch
3. Tried to hold down POWER + VOL UP + VOL DOWN for 30 seconds
4. Tried POWER + VOL UP
Nothing I did worked.
Did someone had this problem before and was able to solve it ?

speedme said:
Recently I purchased my first tablet, ofcourse the Nexus 7 32 GB and I am very happy with it.
As soon as I started it, I received the notice that an update was ready to be installed, which I did (4.2).
After that I got another notice to install 4.2.1.
So far so good, everything worked very well....also the normal charging with stock charger and cable.
Then after about 1.5 weeks I noticed that my battery level didn't went down from 100% to xx%, even after playing games for several hours.
I am absolutely sure this wasn't the case before, I did charge well and battery-level went down normally.
So because I couldn't tell if the battery was empty or not (because it kept being on 100%), the Nexus went down ofcourse.
Well, I plugged in the stock charger and cable and started to charge it.
Battery icon (when Nexus is off) nicely went from first quarter (25%) to full (100%) when I unplugged it.
It booted up nicely, but then I noticed that the battery-level showed 0% and kept stating 0%. Even again after playing games for several hours (GTA4 and RR2).
Normally it should decrease in battery-level ofcourse.
So now I'm stuck at battery-level 0%, but strange thing is that the Nexus works fine besides this small problem.
I can charge it, play with it for several hours, reboot, deplete the battery, etc....
Only thing is I can't see the actual battery-level which is very annoying, since I never know when the battery is empty and needs to be recharged.
I searched internet using Google and also here on XDA, but never found a solution.
What I already did was :
1. Reflash stock ROM, using the Nexus Root Toolkit.
2. Flash CM 10.1 with CWM Touch
3. Tried to hold down POWER + VOL UP + VOL DOWN for 30 seconds
4. Tried POWER + VOL UP
Nothing I did worked.
Did someone had this problem before and was able to solve it ?
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Click to collapse
Hi,
I had this issue too when i purchased my nexus 7.
For solve the probleme I've remove the back of the tablette then unplug and replug the battery.
Don't had any other issue. its realy a nice tablette you have make a good choice.

Sounds like a problem with the fuel gauge chip... Not sure if you can fix it.
Sent from my Nexus 7 using Tapatalk HD

Try fully charging with power off then deleting your battery stats file...
Sent from my Nexus 7 using Tapatalk HD

knuckles1978 said:
Try fully charging with power off then deleting your battery stats file...
Sent from my Nexus 7 using Tapatalk HD
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Click to collapse
That file only stores the data used to fill the battery graph... It has nothing to do with the actual calculation of battery percentage.
Sent from my Nexus 7 using Tapatalk HD

Oh well, was just an idea.. Thanks for enlightening though..
Sent from my Nexus 7 using Tapatalk HD

Check out this thread, there's people talking of a fix for PA for battery percentage stuck at 100%.. Maybe the same cause as your problem... Look from post #10047 onwards.. Makes me think its probably not a hardware issue at least.
http://forum.xda-developers.com/showthread.php?t=1800268
Sent from my Nexus 7 using Tapatalk HD

knuckles1978 said:
Check out this thread, there's people talking of a fix for PA for battery percentage stuck at 100%.. Maybe the same cause as your problem... Look from post #10047 onwards.. Makes me think its probably not a hardware issue at least.
http://forum.xda-developers.com/showthread.php?t=1800268
Sent from my Nexus 7 using Tapatalk HD
Click to expand...
Click to collapse
In PA, is definitely a software issue and seems to be caused by paprefs. The issue that is commonly reported with the N7 across all roms is typically caused by the battery connector not being properly seated. Asus QC consistently has fallen short on this connector.
Sent from my Nexus 7 using Tapatalk HD

I have fixed multiple loose battery connectors using clear scotch tape. The problem is that they didnt use any adhesive on the battery for a batch of n7`s. Makes it possible for the battery to slide back and forth at least 5mm. When it does it pulls the internal battery lead right off the mother board connector. Tape the connector tight. Then tape the battery to that side. Do NOT tape over the copper tape. I even made a small strip of foam to place along the far side of the battery to remove the room to slide.
Easy fix for an annoying problem.
Sent from my Nexus 7 using Tapatalk HD

I can surely try to open the back and check if the battery cable is seated correctly, but I'm wondering....
If it isn't seated correctly, wouldn't that mean that the battery isn't charged at all ?
In my case the battery is being charged and depleted normally, since I can use the N7 to play games etc.
Only the battery-level indicator keeps telling me the level is at 0% and it says "unknown".
It's just annoying as I don't know when it's fully charged or fully drained.
Now I let it charge for a complete night and work with the tablet untill it dies on me.

Just to let everyone know, who might face the same problem :
I pulled off the back cover and found out that indeed the connector, coming from the battery going to the mainboard, was not fixed in its socket.
It was not completely out of the socket, just not firmly pressed.
So I pressed it firmly and put back the cover.
After restart, the readings are back to normal.
Thanks everyone for pointing me in the right direction.

speedme said:
Just to let everyone know, who might face the same problem :
I pulled off the back cover and found out that indeed the connector, coming from the battery going to the mainboard, was not fixed in its socket.
It was not completely out of the socket, just not firmly pressed.
So I pressed it firmly and put back the cover.
After restart, the readings are back to normal.
Thanks everyone for pointing me in the right direction.
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Click to collapse
I have exactly the same problem!! Can you please help me. I tried what you said - removed back cover, pressed the connector hard, and switched on again. The problem is still there. Can you look at this picture - http://android.hdblog.it/wp-content/uploads/2012/07/Nexus-7-Teardown.jpg and tell me if the connector are the red and yellow wires on the left, on the side of the tablet closest to the camera? If so, how did you press it? Could you explain those steps once again please?? Much appreciated!

speedme said:
Just to let everyone know, who might face the same problem :
I pulled off the back cover and found out that indeed the connector, coming from the battery going to the mainboard, was not fixed in its socket.
It was not completely out of the socket, just not firmly pressed.
So I pressed it firmly and put back the cover.
After restart, the readings are back to normal.
Thanks everyone for pointing me in the right direction.
Click to expand...
Click to collapse
Make sure you put a piece of tape on the connector to secure both pieces together and also one on the battery to prevent it from shifting. The newer n7's had a battery that didn't fill the space for it...allowing it to shift and pull the connector free.
Sent from my ADR6425LVW using Tapatalk 2

I had exactly the same issue. Word 4 word.
I took the back off my n7 (take the SIM holder off 1st, makes getting the back off much easier) and noticed the battery connection was loose. Unplugged fully, replugged and got my battery % back! :thumbup:
Sent from my Nexus 7 using xda premium

speedme said:
I can surely try to open the back and check if the battery cable is seated correctly, but I'm wondering....
If it isn't seated correctly, wouldn't that mean that the battery isn't charged at all ?
In my case the battery is being charged and depleted normally, since I can use the N7 to play games etc.
Only the battery-level indicator keeps telling me the level is at 0% and it says "unknown".
It's just annoying as I don't know when it's fully charged or fully drained.
Now I let it charge for a complete night and work with the tablet untill it dies on me.
Click to expand...
Click to collapse
That's what I thought but as I had the same issue but when took the back off saw the battery connection was loose.
Sent from my Nexus 7 using xda premium

I can't seems to get the back cover off
Sent from my SPH-L710 using Tapatalk 2

First off, for everyone that has battery-related problems, please check my thread:
http://forum.xda-developers.com/showthread.php?t=2090826
It provides "fixes" to a number of battery-related issues.
Second, the cover is really easy to get off. Just use your fingernails. Start half-way down one of the long sides (I forget which, but try both - your fingernails will easily slide into the seam). Gently snap off the cover from your starting point. Slowly work your way around. If you go slowly/carefully, it'll come off rather easily and without breaking off any tabs. It snaps back on easily as well.
In my post, I recommend that you apply a small piece of electrical tape on the battery connector, as they have shown over time to come loose for a number of N7 owners.
In all but the occasional rare case, N7's with battery-related issues are easily "fixed" and do not need to be returned for replacement. Just read my thread. It'll save you a lot of time and frustration. It'll also might save you from a needless return!
Good luck and report back.
-bk

Strange. my tablet is doing the weird battery bug. Battery stuck @ 100% for quite some time, even after a whole day of idle and @ home usage after work.
Realized it wasn't dropping.
This morning, I opened up the back and checked out the battery. It was glued down so not shifting around, but I noticed there were fingerprints on the copper material. Odd thing is I bought this tablet new. Box was sealed and everything.
So far I unplugged the battery and plugged back in. Haven't turned the device back on just yet. Might wait a couple hours and see.

Aria807 said:
Strange. my tablet is doing the weird battery bug. Battery stuck @ 100% for quite some time, even after a whole day of idle and @ home usage after work.
Realized it wasn't dropping.
This morning, I opened up the back and checked out the battery. It was glued down so not shifting around, but I noticed there were fingerprints on the copper material. Odd thing is I bought this tablet new. Box was sealed and everything.
So far I unplugged the battery and plugged back in. Haven't turned the device back on just yet. Might wait a couple hours and see.
Click to expand...
Click to collapse
Well-known issue. Simple fix.
Just read my thread referenced above yours.
Good luck!

billykxda said:
Well-known issue. Simple fix.
Just read my thread referenced above yours.
Good luck!
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Click to collapse
Yup I stumbled upon your thread after a bit of searching. The tablet was actually rather new, just purchased a week ago. Was charging and draining fine for few days of ownership, and all of a sudden it started acting up. I realized it was too good to be true seeing 100% battery % after a whole day + gaming on it @ home.

Hd2 wont power without charger

My Hd2 will not power on without the charger plugged in. and then once i unplug the charger it shuts right off. My battery says 100. Can someone help me and tell me whats possibly wrong.

check the battery pins, they bend very easily. If its not that, then you have a faulty battery or a faulty phone. (99 times in 100 its a bent battery pin)

samsamuel said:
check the battery pins, they bend very easily. If its not that, then you have a faulty bayyeru or a faulty phone. (99 times in 100 its a bent battery pin)
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Click to collapse
+1 I had the same problem and it was from the pins

reds28heem said:
My Hd2 will not power on without the charger plugged in. and then once i unplug the charger it shuts right off. My battery says 100. Can someone help me and tell me whats possibly wrong.
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Click to collapse
I had the same problem... I even replaced my battery but still no luck. I was running an android rom and my friend suggested to flash a new rom. I did that and there... Task accomplished! hope this works for you if the battery pin thing didn't...
Sent from my ZeJstersHD2 using xda premium

Battery for sure. I tell you this from my personal secret experience.

can plug and unplug charger repeatedly cause harm?

so I found my little sister plugging and unpluging the charger repeatedly, well she's a child I can't blame she was playing,but I can blame my stupidity for leaving my phone with her,luckily the charger wasn't connected to the wall so there was no electricity,anyway the phone charges and everything, but I can see 2 aligned marks on the rubber that covers the port,so what else might have happened? bent port?? is the port inside the phone bendable or tough?

Makes me cringe thinking about it ? if everything is still working though it's probably fine but only time will tell if the port fails. If you use wireless charger that will cut down the amount of times you have to plug it in. Before wireless charging I would use charger and ota daily on my Samsung devices and never had a port fail.

AndroiderM said:
Makes me cringe thinking about it �� if everything is still working though it's probably fine but only time will tell if the port fails. If you use wireless charger that will cut down the amount of times you have to plug it in. Before wireless charging I would use charger and ota daily on my Samsung devices and never had a port fail.
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Click to collapse
thank you, well after this accident I will definitely get a wireless charger, but I have a question what do mean by 'time will tell if the port fails' I mean if it got damaged the phone wouldn't charge at all right? another question if any thing bad happened to the port would there be any possibility that It still charges however affect battery life cause it to drain fast for an example?

Just saying port couldve got minimal damage and a problem could arise downdown the road. Ex something bent that event breaks after multiple uses. I highly doubt this will happen just an example. All newer phones have safeguards overcharging, undervolting, etc so all you internals are fine especially with the charger being unplugged from the wall. Don't over think it if the phone starts acting up find an excuse to get a warranty replacement

AndroiderM said:
Just saying port couldve got minimal damage and a problem could arise downdown the road. Ex something bent that event breaks after multiple uses. I highly doubt this will happen just an example. All newer phones have safeguards overcharging, undervolting, etc so all you internals are fine especially with the charger being unplugged from the wall. Don't over think it if the phone starts acting up find an excuse to get a warranty replacement
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OK I got it, unfortunately I can't get a replacement as the 14 days are over but I hope that no harm was done, thank you.

Won't turn on, no lights, but warms up when plugged in.

As the title says, Phone won't turn on. There are no led lights at all. It does get warm after being plugged in for a little. I had jrkruse's hybrid_bra1 stock safetynet samsungpay...... rom on it. It was rooted. Very minimal processes running. I actually had basically everything stopped and greenify on. Phone was around 40% battery. I plugged it into charger, took my dog outside, showered real fast, washed a few dishes, then came back in to room within 15 minutes to my phone being dead and hot. It's never got this hot before even while rooted and plugged in with this rom on it. I have never had it get that hot. Was just formatted the day before and really bare but, that is what happened.
A couple battery apps I had put the batteries remaining life capacity at around 60%. It held a charge poorly. Even for 60% capacity it felt weak, considering how little I did on it lately. I am thinking the battery may have took a crap but unsure because it warms up when it is plugged in. I plan on getting a battery soon since they are inexpensive and replace it to try it out.
Just wondering if anyone here has any experience with this and can offer any advice.
Thank you in advance.
(I looked for a min or two for similar posts but didn't find much. Will gladly take down if someone can point me the way)

You say your battery was already outworn, It may have died. I think you should try with a new battery, Or take it to a technician who can test the phone's hardware to see if there is anything else broken
i've only had one similar case with an s3, which would turn of at random % of battery. But when plugged turned on. I replaced the battery and it worked fine then

Maxissc said:
You say your battery was already outworn, It may have died. I think you should try with a new battery, Or take it to a technician who can test the phone's hardware to see if there is anything else broken
i've only had one similar case with an s3, which would turn of at random % of battery. But when plugged turned on. I replaced the battery and it worked fine then
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Click to collapse
I really do hope that is what's wrong. I just ordered a battery. Thanks for the reply. I also got some little tools and battery door adhesive sticker. Wish me luck!
funny story....
The mic in my Nubia Red Magic broke and I sent that back to hong kong for repairs like 20 days ago. Before the Red Magic, I used this galaxy s7 edge my friend gave me. I gave it back when I got the Red Magic and told him to sell it or something. Not much later, decided to buy it back off of him for $200 to give to my mother. She loved it. I had the gs7 edge with me exploring prepaid provider options for my mom when the Red Magic mic broke. So then I decided to borrow the edge from her till my phone got back and few days later I break this one too..
I feel naked without a phone for so long haha

Zombiebeaver said:
As the title says, Phone won't turn on. There are no led lights at all. It does get warm after being plugged in for a little. I had jrkruse's hybrid_bra1 stock safetynet samsungpay...... rom on it. It was rooted. Very minimal processes running. I actually had basically everything stopped and greenify on. Phone was around 40% battery. I plugged it into charger, took my dog outside, showered real fast, washed a few dishes, then came back in to room within 15 minutes to my phone being dead and hot. It's never got this hot before even while rooted and plugged in with this rom on it. I have never had it get that hot. Was just formatted the day before and really bare but, that is what happened.
A couple battery apps I had put the batteries remaining life capacity at around 60%. It held a charge poorly. Even for 60% capacity it felt weak, considering how little I did on it lately. I am thinking the battery may have took a crap but unsure because it warms up when it is plugged in. I plan on getting a battery soon since they are inexpensive and replace it to try it out.
Just wondering if anyone here has any experience with this and can offer any advice.
Thank you in advance.
(I looked for a min or two for similar posts but didn't find much. Will gladly take down if someone can point me the way)
Click to expand...
Click to collapse
I have the same rom, with charging issues. I don't think its the rom causing it. The s7e are getting old and the batteries are taking a toll with the age. My phone will charge up to 81 at night and stay there. I get better results with wireless charging so i just top my phone off during the day with my wireless charger. There is a code to reset the battery's internal memory, if i find the link on how to do it I will post here for you.

Fear_The_Fluff said:
I have the same rom, with charging issues. I don't think its the rom causing it. The s7e are getting old and the batteries are taking a toll with the age. My phone will charge up to 81 at night and stay there. I get better results with wireless charging so i just top my phone off during the day with my wireless charger. There is a code to reset the battery's internal memory, if i find the link on how to do it I will post here for you.
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Click to collapse
Thanks for reply and alright let me know if you find out. My phone had no problem charging to 100% Its just the 100% on the status bar wasnt 100% of the 3600 capacity from wear. My friend's also does the same thing as yours except his he cant charge more than like 24% haha. He just uses it as a plugged in music player in car.... I am getting battery in the mail tomorrow and will see what I can do.

Zombiebeaver said:
Thanks for reply and alright let me know if you find out. My phone had no problem charging to 100% Its just the 100% on the status bar wasnt 100% of the 3600 capacity from wear. My friend's also does the same thing as yours except his he cant charge more than like 24% haha. He just uses it as a plugged in music player in car.... I am getting battery in the mail tomorrow and will see what I can do.
Click to expand...
Click to collapse
Try this: https://forum.xda-developers.com/showpost.php?p=74268596&postcount=4
I have not done it because it requires draining the battery and I never get around to doing that. Hopefully it will help you out. Good luck!

Fear_The_Fluff said:
Try this: https://forum.xda-developers.com/showpost.php?p=74268596&postcount=4
I have not done it because it requires draining the battery and I never get around to doing that. Hopefully it will help you out. Good luck!
Click to expand...
Click to collapse
A little late, sorry. lol.
Thanks for suggestion, however, I may have worded my statement incorrectly. I meant to say that My phone would charge to 100% and the status bar displayed it as 100% but, the health and total capacity of the battery in mah was not the maximum 3600 or so due to simple wear and tare. It isn't apparent within any stock android feature however, battery monitoring apps like accubattery gather statistics after several charging sessions and estimate the current mah capacity. Mine was much lower than the default oem stated value of 3600. So my battery could be charged 100% but the 100% is really only 2400 mah lol. It was obvious either way by noticing that after my time using it and the previous owner's bad charging over night habits, that the battery was gradually needing charged more often lol..
I did read about the calibration method before when I was first looking into the battery issues. It seems it is more often done after a new battery is installed.
I screwed up a new battery install at the last second. I had to stop due the tiniest little round metal piece coming off from a very light swipe of my plastic spudger.
It was a very small wire connector piece. Unbelievably irritating. I didn't even finish because I doubt it would work properly. I beleive it is for the rf cable or something not sure. The red one on the left bottom side of the logicboard/motherboard whatever. There are three of them.
I took it apart and put it together a couple times prior to this and in a hurry it popped off and I couldnt find it. I couldnt find out the exact part name online so I could buy one and solder it back on. I did find a site/ supplier that has a plethora of them though. They are tiny coaxial connectors/pins. I didn't look through them all but there are 6,000 some listed under coaxial connectors (RF). https://www.digikey.com/products/en/connectors-interconnects/coaxial-connectors-rf/437?k=coaxial pin
I haven't gotten around to asking samsung or the digikeys support if they could help me find out which it is. They have different sizes and frequency ratings or speeds and such. The phone is packed away until I manage to figure out which pin to buy or if I pull 80$ or so out of my behind and buy a whole new motherboard logic board haha.