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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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shame! i wanted to know the secret next step! hehehe
I seemed to try all 3 methods and nothing is happening. I was using the rom and the phone died. Please help
EDIT AS OF JUNE 6TH!: Fixed it with an ac wall charger.
faiz1120 said:
I seemed to try all 3 methods and nothing is happening. I was using the rom and the phone died. Please help
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Did you check if your battery died?
Check this thread: http://forum.xda-developers.com/showthread.php?t=1084199
Good luck.
iandy1 said:
Did you check if your battery died?
Check this thread: http://forum.xda-developers.com/showthread.php?t=1084199
Good luck.
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it said it was dead when it turned off on me cause even with the wp7 rom it was draining while the charger was in. this never happened on android
faiz1120 said:
it said it was dead when it turned off on me cause even with the wp7 rom it was draining while the charger was in. this never happened on android
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Looks like WP7 will not charge if the battery is dead.
I don't have experience with WP7, I just read the thread above earlier.
If the battery was fully depleted the procedure on the link is worth a shot.
Good luck.
ive been trying that and sadly no luck. i hope this guys rom didnt mess up my phone. they dont even sell the hd2 on tmobile anymore
theres nothing wrong with the ROM,
WP7 was never ment for our device, the battery controller and WP7 do not get along well at all,
if you can boot to bootloader or magldr then plug in your cable, it will charge, no lights will come on though.
if you cant boot to it try heating up the battery a bit
there is a method that suggests plug it in, remove the battery, leave for a few seconds, put the battery back in again and leave to charge
the final method of charging involves connecting a USB cable directly to the battery, , cut an end off, connect the red to the +, the black to the -
the other two cables are not used and should be taped up
the third terminal on the battery is not used either, tape up the connections so that they cant short out. finally plug the cable back in to the PC
all methods should not be charged for more than 1 hour
How long do I heat up the battery if I'm using a hairdryer?
just make it warm to touch, i wrapped mine up in a towel and put it on a radiator for a few min, it was warm, not hot, it gave me just enough to get me in to bootloader. it should comfortably warm your hand and not be hot in any way,
but that will only work if you havent killed your battery competely, if you have no volts or amps you will need to direct charge it or use an external charger.
remember, its a chemical reaction inside those things, you ever see a laptop catch fire? well its the same kind of batteries so be warmed! .....did you see that ? .....ok im now leaving
dazza9075 said:
just make it warm to touch, i wrapped mine up in a towel and put it on a radiator for a few min, it was warm, not hot, it gave me just enough to get me in to bootloader. it should comfortably warm your hand and not be hot in any way,
but that will only work if you havent killed your battery competely, if you have no volts or amps you will need to direct charge it or use an external charger.
remember, its a chemical reaction inside those things, you ever see a laptop catch fire? well its the same kind of batteries so be warmed! .....did you see that ? .....ok im now leaving
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k thanks im about to try that now.....i missed the warped in towel part
Apologies if I don’t have the right forum lads,
I bought a Pipo Max M1 tablet about 3 months ago. I loved it , a very good tablet.
I bought a second one for my nephew as a Xmas present.
Before I gave it to him I charged it using my own charger a 5V, 2.5mA charger.
Then I took it to him in Greece.
Now when I went to Greece I never took my charger with me, I assume my nephews charger would do just fine.
When both tablets were discharged I used my newphews charger. This charger was a 12V, 1.5mA charger totally different from the one which came with my tablet.
When I used the 12V, 1.5mA the tablets showed both 100% charge in 2-3 minutes and then both discharged in less than 1 minute, clearly something wrong with that charger. Both tablets never charged again and where completely drained.
Now when I came back to the UK and used my charger (which was working from the start) , my tablet will not charge, it will not turn on and the tablet will get really hot when the jack plug is located when I hook it up to the power supply.
Is it possible the tablet is fried because of the wrong charger that came with the second tablet?
Could it be a matter of taking it to a technician and fixing it?
Any ideas guys?
Thanks in advance and looking forward to your reply
I have the same problem with you. They sent me the wrong charger (9V, 2.5A). The tablet was dead after 3 minutes. Now i'm waiting to receive the right charger.
Try to reset your tablet from the small hole in the back side. otherwise, you can try this http://www.slatedroid.com/topic/38865-dead-pipo/page__st__20__p__471674#entry471674
panospc said:
I have the same problem with you. They sent me the wrong charger (9V, 2.5A). The tablet was dead after 3 minutes. Now i'm waiting to receive the right charger.
Try to reset your tablet from the small hole in the back side. otherwise, you can try this http://www.slatedroid.com/topic/38865-dead-pipo/page__st__20__p__471674#entry471674
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Panospc I have tried the reset button quite a few times but the batteries are completely drained!
Also I tried the method outlined in your link , although i had to cut the red cable and reconnect it but nothing happened.
My worry is that the tablet now overheats where the power supply plugs in.
Did your tablet overheat when plugged into the power supply without charging or turning on? Does it work now?
Thanks for your help by the way
mtdgr said:
Did your tablet overheat when plugged into the power supply without charging or turning on? Does it work now?
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I have only the 9V 2.5A charger right now, with this charger, both tablet and charger was cold all the time after 4 hours of charging. The tablet is not turning on. When I get the 5V, 2.5A charger I will inform you.
If you have a multimeter, try to measure the voltage of the battery, maybe the voltage is higher or lower than normal.
panospc said:
I have only the 9V 2.5A charger right now, with this charger, both tablet and charger was cold all the time after 4 hours of charging. The tablet is not turning on. When I get the 5V, 2.5A charger I will inform you.
If you have a multimeter, try to measure the voltage of the battery, maybe the voltage is higher or lower than normal.
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Yes I had the same issue when I was trying to get different adapters to work with the tablet.
I have ordered two seperate adapters from ebay both at 5V,2000 mA which the seller described specifically for the M1. I will post them to Greece and hopefully they will work.
Regarding my tablet as I am no expert, is it possible you think my tablet was fried?Can it come back to life?
A highest voltage adapter than 5V (the 12 V that I used) , do you think it burned the unit?
Thanks again ( PS: I think you are Greek?)
mtdgr said:
Thanks again ( PS: I think you are Greek?)
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Yes, PM me if you want, it would be easier for me to talk in Greek.
panospc said:
Yes, PM me if you want, it would be easier for me to talk in Greek.
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Will PM you mate cheers
PS: I just got feedback from a technician and he said the unit is dead. I am starting to give up hope! shame!
maybe this suggestion will be work but i am not for sure.
i will take no reponsibilities of damages!
1. try to change battery.
2. unsoldered the battery from tablet and try to to relive with the correct charger ( maybe cut the cable of charger and connect the right pins to relive the battery)
3. connect tablet with the correct charger without battery to see if your table still lives.
good luck
KindsKoPP said:
maybe this suggestion will be work but i am not for sure.
i will take no reponsibilities of damages!
1. try to change battery.
2. unsoldered the battery from tablet and try to to relive with the correct charger ( maybe cut the cable of charger and connect the right pins to relive the battery)
3. connect tablet with the correct charger without battery to see if your table still lives.
good luck
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Thanks for the advise mate
1. try to change battery.
no idea where to get a compatible replacement , if you can advise thats great
2. unsoldered the battery from tablet and try to to relive with the correct charger ( maybe cut the cable of charger and connect the right pins to relive the battery)
are you saying straight connection of the two battery cables to the power supply? will this not damage the battery even further? my charger is a 5V and the battery on top it says 3.7 V?
3. connect tablet with the correct charger without battery to see if your table still lives.
tried it no luck!
I got a 5V, 2A charger from ebay and my tablet works fine now.
I guess that the tablet has a circuit before the battery that prevents charging if the voltage is higher than 5v. So I think that this circuit was fried from the 12V charger and the current doesn't reach the battery and other parts of the tablet. You have to find a way to connect the tablet to an external charged battery with the same voltage to see if the tablet is alive, I think most mobile phones have a 3.7V battery also.
panospc said:
I got a 5V, 2A charger from ebay and my tablet works fine now.
I guess that the tablet has a circuit before the battery that prevents charging if the voltage is higher than 5v. So I think that this circuit was fried from the 12V charger and the current doesn't reach the battery and other parts of the tablet. You have to find a way to connect the tablet to an external charged battery with the same voltage to see if the tablet is alive, I think most mobile phones have a 3.7V battery also.
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panos good to know your unit is working fine!
there are three cables when I open the tablet
1 red
1 black
1 grey
what's this grey cable doing? According to your advise, should I connect the red and black cables to an external 3.7V battery?
I read in a couple of forums that I can jump start the battery...how is this possible? any instructions/procedure?
mtdgr said:
what's this grey cable doing?
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I think the gray cable is for WiFi antenna.
mtdgr said:
According to your advise, should I connect the red and black cables to an external 3.7V battery?
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Yes, Make sure you connect it with the correct polarity, red wire is positive and black wire is negative.
Thank you Panos
I will give it a try and will let you know!and fingers crossed!
Ps: if you hear in the news about a house exploding in newcastle that would be me messing up the battery connection!!
Sent from my GT-I9300 using xda app-developers app
Hi guys I've got the same problem. I got my PIPO m1, but it didn't switch on with or without charger. I disassembled device and charched battery straight. So, after 8 hours of charching it has just 3.25 volt. And if I connect charger to the unit, voltage on its motherboard is 0.5 volt (battery is desoldered at this moment). It can't be the problem of charger, cause I used several ones (5V, 2.5A).
And! The main point! Stock charger was from PIPO m2 so it has 9V Unfortunately, I noticed it after my first charching tryings.
For now I've got a brick. Have you got any ideas what i can do to reanimate it?? ( Thanks!
SpookyXDA said:
Hi guys I've got the same problem. I got my PIPO m1, but it didn't switch on with or without charger. I disassembled device and charched battery straight. So, after 8 hours of charching it has just 3.25 volt. And if I connect charger to the unit, voltage on its motherboard is 0.5 volt (battery is desoldered at this moment). It can't be the problem of charger, cause I used several ones (5V, 2.5A).
And! The main point! Stock charger was from PIPO m2 so it has 9V Unfortunately, I noticed it after my first charching tryings.
For now I've got a brick. Have you got any ideas what i can do to reanimate it?? ( Thanks!
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SpookyXDA I will follow panos advise today and try to connect the tablet straight to an external 3.7v battery.
Also I will try and find a 3.7v charger and connect the battery straight to that charger and see how it goes!
I have the feeling the circuit board , like panos said above, was fried at a point due to the 12V (in my case and I think the same for you since you used a 9V). If anyone is here has good imagination and creativity on how to overcome and bypass the fried portion on the circuit that would be great!
i can upload a couple of photos if that helps!
I will wait for your results!
SpookyXDA said:
I will wait for your results!
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Iam afraid none of the things i tried works...i need to find replacement parts if this is going to work..i think a small section of the circuit board if fried.
When the rablet is plugged into the power supply it gets very warm which means electeicity goes through but i doesnt reach the battery
Any idea where to get replacement parts guys??
Sent from my GT-I9300 using xda app-developers app
Okay, i still got a couple of ideas to reanimate device. If everything goes well, I'll write about it here.
SpookyXDA said:
Okay, i still got a couple of ideas to reanimate device. If everything goes well, I'll write about it here.
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Let me know how it goes mate
Sent from my GT-I9300 using xda app-developers app
If it is impossible to fix, I am interested to buy it because I'm looking for some spare parts.
This may be the noobiest of questions, but is there anything special that needs to be done to chage the unit or is anyone aware of units with bad charging ports. I just unboxed my Nexus last night and as my usual new device ritual put it on the charger for a few minutes. Noticed the battery icon came on for about 5-10 seconds and then disappeared. Figured it was normal but when I powered it on we only at 43%. Shut it off and let it "charge" overnight but when I powered it back up still at 43%. Tried a different cable with same results. Calling store today but wondering if I might have missed something.
Sent from my EVO using xda app-developers app
mumbles202 said:
This may be the noobiest of questions, but is there anything special that needs to be done to chage the unit or is anyone aware of units with bad charging ports. I just unboxed my Nexus last night and as my usual new device ritual put it on the charger for a few minutes. Noticed the battery icon came on for about 5-10 seconds and then disappeared. Figured it was normal but when I powered it on we only at 43%. Shut it off and let it "charge" overnight but when I powered it back up still at 43%. Tried a different cable with same results. Calling store today but wondering if I might have missed something.
Sent from my EVO using xda app-developers app
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A common problem seems to be that the battery connector is not properly seated during assembly. Pop off the back cover and visually inspect the connector. Also, there are a handful of threads regarding the issue you're having. You may want to search for them and check them out for some pertinent info.
najaboy said:
A common problem seems to be that the battery connector is not properly seated during assembly. Pop off the back cover and visually inspect the connector. Also, there are a handful of threads regarding the issue you're having. You may want to search for them and check them out for some pertinent info.
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Thanks. Does the back just pop off? Was running out the door to work so didn't get to search. Will check when I get home.
Sent from my EVO using xda app-developers app
Ok, so got the back popped off and all look connected. Power the unit back on and somehow it's at 49% and my wife said when she picked it up earlier today it was at 55%. Checked the battery stats and it's been online for 9 hrs. If I plug it in while powered on the charging icon displays as if it's charging. Just tried leaving it powered on and connecting the charger and just leaving it. If I hit the power button the charging icon comes on, so maybe it is charging, just incredibly slowly?
mumbles202 said:
Ok, so got the back popped off and all look connected. Power the unit back on and somehow it's at 49% and my wife said when she picked it up earlier today it was at 55%. Checked the battery stats and it's been online for 9 hrs. If I plug it in while powered on the charging icon displays as if it's charging. Just tried leaving it powered on and connecting the charger and just leaving it. If I hit the power button the charging icon comes on, so maybe it is charging, just incredibly slowly?
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My cable went bad within a month. Luckily, every other item we own seems to have the same micro-usb slot, so we had a ton of other cables to try, so that fixed it. But two bad cables - I wouldn't guess that.
Try to unplug the battery and replication it again. Open the back cover and do that. You need to be carefully and not to break the pins.
Sent from my Nexus 7 using xda app-developers app
Seems to be charging ok now. Going to watch it today, then be in adb later for root.
Sent from my EVO using xda app-developers app
(fixed)I let my phone die because I wasn't near a charger. Now my phone is completely dead. I try to charge and nothing happens. It won't boot with lit black screen....nothing. It's like having the battery taken out.....
any known fix?
edit: (fixed) I waited and nothing happened so a bit after that I held the power button for 40 seconds then unplugged the charge and while still holding the power button plugged it back and the red/orange light came on. I then let it charge for a bit until the light turned off then I powered it on and worked. I experienced the problem once before but it did the red/orange light problem. It had never fully died like that before which freaked me out.
let it charge for atleast 30 minutes
Sent from my Nexus 4 using xda app-developers app
pak-stars said:
let it charge for atleast 30 minutes
Sent from my Nexus 4 using xda app-developers app
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nothing so far :/
i've had the same problem before.. the best method for make sure that n4 works again is simple, just dissasembly the back case and replace batery connector port and replace it back.
just follow Nexus 4 Teardown from iFixit.com
just remove the battery connector port. you don't need to remove all the battery.
godman_8 said:
nothing so far :/
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1) Check your USB cable and adapter.
2) Use another charger.
3) Use another wall socket.
4) Use a combination of options 1-3 before you determine your phone a lemon.
fixed
fixed (read my post)