HP Touchpad CMx will not charge (bricked) solution - General Questions and Answers

After many successful upgrades to Android I finally got the kiss of death. The battery died and it would not recharge. After many hours of research and trial and error I was finally able to get it charged again. I had read to let it sit for a week and let it totally discharge but me impatience wouldn't allow me to. The fact is it was a week before it would charge so get your patience slippers on and relax while nature takes its course.
To prevent this from occurring... Always use the HP charger or Touchstone...it puts out a higher voltage then regular chargers. Make sure yours is working.
Try the following in order
1) Hold the POWER, VOLUME + AND HOME buttons down at the same time for 15-20 seconds while being charged (hard reset)
2) Hole the POWER and VOLUME + button while connected to a PC that's on.
If it still refuses to power on:
Let it sit or you can spend a week pushing the buttons with no results. After the weeks penalty box, One I simply placed on the Touchstone and it began to charge. Another I put on the Touchstone and to the USB charger at the same time and it began to charge (removed the USB charger.
Moral to the story, be patient, put the touch pad away for a week while you order the Touchstone charging dock.

Related

[Q] Won't turn on

I just opened the box and took out my new TF 700, I plugged the charger into a wall socket, then into the TF700. For a second or so I saw a battery icon showing about half charge. I've tried to turn it on but nothing happens when pushing the power button. I do have a orange light at the top left when the charger is plugged in but it won't turn on plugged in or not.
Any ideas, do I have to wait 8 hours just to turn it on or do I have a DOA
Thanks,
Dave
All of a sudden it started working, now to learn how to use it, its my first tablet.

HELP! My TF101 won't respond

Ok,
I've had my baby since about day one. Been rooted since then too. For the past few months the power button started giving me grief. Eventually about a month ago I took off the bezel to directly access the buttons. I have a rubber bumper type case that I kept on there for minimal protection.
So I come home yesterday and the screen is off and not responding. It had about 30% battery when I left it the night before. Usually it holds a decent charge. But I plugged it in anyway and no response. I tried plugging it into the pc and no reaction.
I don't know what else to try. I can't get a pulse. Any help is greatly appreciated. I tried all combinations of holding the buttons but to no avail.
Try plugging it into the PC USB overnight for a trickle charge, maybe your battery died and the charger is dead
*Detection* said:
Try plugging it into the PC USB overnight for a trickle charge, maybe your battery died and the charger is dead
Click to expand...
Click to collapse
Thanks bud. I plugged it in and it started to charge. I should have checked that and I probably would have, but I was sweating it so much I didn't put 2 and 2 together..
This will be my 4th OEM charger so I really should have known. But each time before they seemed to go when plugged in to a certain outlet.
Thanks again dude. I'm off to Office Depot to buy (2) more chargers. (sings) "I got my baby back, baby back, baby back..."
Good news, new charger is better than new tab
You could try the freezer trick with the chargers, seal it into a zip-bag and put it in the freezer for 20-30 mins
The original chargers have some sort of temperature controlled resettable fuse in them, they seem to trip when the charger gets too hot, and the freezer resets it, in many cases fixing the charger

[Q] turned off for a long time and now won't start

Hey all, I have a stock tf700t that was working well until the charger cable snapped. Several months passed before the replacement cable arrived. So I put it on to charge overnight, and got both the orange light initially and then the green led to say it was fully charged. But I can't get it to respond to any attempts to turn on. I tried the usual
Pwr held for 30 sec.
Pwr and volume buttons
and stincking a pin in the reset hole
- but nothing happens. no vibration or LCD response?
Reading some forums, I tried to use a PC USB port to trickle charge the device, but interestingly this does not light the LED's.
Any ideas as to what is happening?
hoads1234 said:
Hey all, I have a stock tf700t that was working well until the charger cable snapped. Several months passed before the replacement cable arrived. So I put it on to charge overnight, and got both the orange light initially and then the green led to say it was fully charged. But I can't get it to respond to any attempts to turn on.
Click to expand...
Click to collapse
Do you remember the charge state before you stored it? Li-ion batteries generally don't like being stored in a totally discharged condition, and if the voltage drops below a critical level, the battery can even be permanently damaged.
Try charging the tablet from a PC USB port (directly - not via the dock) - it's normal that in this case the LED does not light up.
thanks for the advice, I am pretty sure it would have been <5% battery, maybe even lower. I hope the battery is okay, and will try your idea.
The trickle charge via USB takes a long time. Leave it connected for at least 6 hours and make sure your PC doesn't hibernate or sleep.

LG P920 just boot when plugged to charger

the problem is just that, the phone boot just when pugged to charger, original or any charger, or PC USB, or just anything that give current via he's own osb port
power button doesn't work anymore (from near 3 years I need to go out with a emergency charger and a short usb cable)
this problems starts near 3 years ago, some day the phone goes crazy and boot loop several times, from just LG logo to scanning multimedia files, or start perfectly, but shutdown any time, or just work good several days (and with the power button working)
I was thing on humidity or moisture, but the mainboard seems to be ok, one day I was soldering two wires, and when de power button was working putting together the two wires acts like power button, but when power button doesn't work the wires the same
some day recently I was cut away the power button flex, test it and it's broken, but the two wires doesn't work
the very problem is that now the shutdown is most noticeable, no matters if I put just the original stock battery or other original, those batteries are ok, old but ok, charged and the voltage are ok
there is some with expertise to guide me to find how to resolve this?

Phone completely dead

Hello. The other day, my daughter dropped my 7 pro onto the kitchen floor. It was in a case and had no cosmetic damage. It worked fine (or so I thought) and I used it the rest of the day. When I woke up in the morning, the phone was completely dead. (wouldn't turn on, wouldn't recognize it was plugged into a charger etc). Here's what I have tried:
3 separate chargers/cables
Mobile charging bank
car charger
plugging into 2 computers
pushing and holding power button
pushing and holding power plus volume up
pushing and holding power plus volume up and down
The phone was not charging at all.. The mobile charging bank indicators did not drop... (no energy drained from the mobile charger).
I came to the conclusion that the charging port could have gone bad in the fall. I'm experienced at electronics repair so I ordered a new charging port and replaced the charging port.... Still nothing.
I ordered a new battery that should be here Monday but I've never experienced a battery just quitting... Usually there are signs. I was wondering if anyone had any other suggestions. I am using my oneplus 6t as a backup but I really just want my 7 pro back.
Dollyllama said:
Hello. The other day, my daughter dropped my 7 pro onto the kitchen floor. It was in a case and had no cosmetic damage. It worked fine (or so I thought) and I used it the rest of the day. When I woke up in the morning, the phone was completely dead. (wouldn't turn on, wouldn't recognize it was plugged into a charger etc). Here's what I have tried:
3 separate chargers/cables
Mobile charging bank
car charger
plugging into 2 computers
pushing and holding power button
pushing and holding power plus volume up
pushing and holding power plus volume up and down
The phone was not charging at all.. The mobile charging bank indicators did not drop... (no energy drained from the mobile charger).
I came to the conclusion that the charging port could have gone bad in the fall. I'm experienced at electronics repair so I ordered a new charging port and replaced the charging port.... Still nothing.
I ordered a new battery that should be here Monday but I've never experienced a battery just quitting... Usually there are signs. I was wondering if anyone had any other suggestions. I am using my oneplus 6t as a backup but I really just want my 7 pro back.
Click to expand...
Click to collapse
Hello. Have you tried holding the power button + the volume up button for a bout 20-30 seconds?
---------- Post added at 03:22 AM ---------- Previous post was at 03:21 AM ----------
Dollyllama said:
Hello. The other day, my daughter dropped my 7 pro onto the kitchen floor. It was in a case and had no cosmetic damage. It worked fine (or so I thought) and I used it the rest of the day. When I woke up in the morning, the phone was completely dead. (wouldn't turn on, wouldn't recognize it was plugged into a charger etc). Here's what I have tried:
3 separate chargers/cables
Mobile charging bank
car charger
plugging into 2 computers
pushing and holding power button
pushing and holding power plus volume up
pushing and holding power plus volume up and down
The phone was not charging at all.. The mobile charging bank indicators did not drop... (no energy drained from the mobile charger).
I came to the conclusion that the charging port could have gone bad in the fall. I'm experienced at electronics repair so I ordered a new charging port and replaced the charging port.... Still nothing.
I ordered a new battery that should be here Monday but I've never experienced a battery just quitting... Usually there are signs. I was wondering if anyone had any other suggestions. I am using my oneplus 6t as a backup but I really just want my 7 pro back.
Click to expand...
Click to collapse
Hello. Have you tried holding the power button + the volume up button for a bout 20-30 seconds?
Update:
Replacing the charging port did nothing but I decided to order a new battery and attempt replacing that while the phone was apart before completely throwing in the towel.
Success!!!
The drop snapped the contact points at the end of the battery which is why it still worked for the rest of the day but no longer charged. The phone has been back together for 2 days now with zero issues. Although I was able to put the back cover on and it lines up correctly, I wanted to do the job right... I did order a new adhesive strip for the back cover so that it will be completely sealed as if it came from the factory.
Dollyllama said:
Update:
Replacing the charging port did nothing but I decided to order a new battery and attempt replacing that while the phone was apart before completely throwing in the towel.
Success!!!
The drop snapped the contact points at the end of the battery which is why it still worked for the rest of the day but no longer charged. The phone has been back together for 2 days now with zero issues. Although I was able to put the back cover on and it lines up correctly, I wanted to do the job right... I did order a new adhesive strip for the back cover so that it will be completely sealed as if it came from the factory.
Click to expand...
Click to collapse
Can you please tell me from where did you order new battery, and is it original or replacement one? Does your warp charging work?
I ordered it off a us seller on ebay. It is the same battery according to the sku... It works just fine. I honestly don't pay attention to warp charging... I use battery charge limit and never charge above 80% and try not to let it drop below 40. I bought the phone mint but used on swappa in December 2019, but it didn't include a charger... I use my 4 port charging bank or the 6T charger. I never bought a charger specific for the 7 pro. I will say that on the 6t charger it will charge from 40 to 80 percent in under an hour
Dollyllama said:
I ordered it off a us seller on ebay. It is the same battery according to the sku... It works just fine. I honestly don't pay attention to warp charging... I use battery charge limit and never charge above 80% and try not to let it drop below 40. I bought the phone mint but used on swappa in December 2019, but it didn't include a charger... I use my 4 port charging bank or the 6T charger. I never bought a charger specific for the 7 pro. I will say that on the 6t charger it will charge from 40 to 80 percent in under an hour
Click to expand...
Click to collapse
Sounds like it's working again?

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