Please help! My dear friend asked me to fix her broken 610 from what I couldn't even restore to the original ROM. I've tried to download some roms that were as close as to the device that I have (a Polish PLAY.pl 610) but unfortunately couldn't load it through fastboot, adb or recovery. But that's not the subject right now.
All was ok (I could boot it up to fastboot), but one night I sat it down, and the next day it was dead.
- The orange diode doesn't light up when plugged to PC/socket charging
- Power, Power+VolUp, Power+VolDown, none of the combination work, the screen doesnt even flicker
ALL that shows that it is there, is a QHSUSB_BULK unknown device in Windows Device Manager...
Is there a way to fix it? I didn't manage to flash the ROM I just rooted it with HTCs tools, the next day it was like this.
Thanks!
Enstriel said:
Please help! My dear friend asked me to fix her broken 610 from what I couldn't even restore to the original ROM. I've tried to download some roms that were as close as to the device that I have (a Polish PLAY.pl 610) but unfortunately couldn't load it through fastboot, adb or recovery. But that's not the subject right now.
All was ok (I could boot it up to fastboot), but one night I sat it down, and the next day it was dead.
- The orange diode doesn't light up when plugged to PC/socket charging
- Power, Power+VolUp, Power+VolDown, none of the combination work, the screen doesnt even flicker
ALL that shows that it is there, is a QHSUSB_BULK unknown device in Windows Device Manager...
Is there a way to fix it? I didn't manage to flash the ROM I just rooted it with HTCs tools, the next day it was like this.
Thanks!
Click to expand...
Click to collapse
Sounds like a dead flat battery. Take it to a phone repairer and get them to give the battery a boost charge . You can do this your self if you know what your doing but these battery's can explode if you don't know what you doing and you'll need the right equipment, so if YOU DECIDE to try this be very careful (I am not responsible for any damage that may occur if YOU DECIDE to attempt these repairs yourself).
- remove the phones back cover
- disconnect the battery
- connect the battery (with correct polarity) to a bench top power supply with the voltage set to 3.5 volts DC and current limit set to 150 mA (this is very important, incorrect polarity or power supply settings may result in flames or explosions) and monitor the battery voltage. Once it is above 3 volts you are done.(if the battery seems to be getting hot at all during this process stop immediately)
- reconnect the battery and and give it a full charge as per normal in the phone.
Related
Hello!
I purchased this device some time ago and did not modify it in anyway (no rooting/flashing etc), just a stock device. After leaving it just laying around for about a month I tried to turn it on again and nothing happened. Connecting it to USB or wall charger just makes the power button red led blink intermediately.
Ive tried:
Reset button
Hard reset (vol up+vol down+power button)
Leaving it to charge overnight from the wall charger
Leaving it to charge overnight from USB
Singing to it
Specifics:
Stock firmware
Viewsonic VPAD7
Model#: VS13761
Any help would be appreciated (even as mundane as saying "its hardware is fried") etc, just want some clarify on what happened if their is no way to fix it.
Thank you in advance
Same problem
Even My Vpad 7 is having the same problem.
Can anyone shed light to the above problem?
Puia
Let's start with here -
http://forum.xda-developers.com/showthread.php?t=1015005 - post #6
Can you hold the "Volumn" Down button while pressing the Power button to get into FTM mode (diagnostic screen) - make a note of the basic information it displayed.
To exit/reset - you might need to use a small pin to press the Reset button at the lower bottom (left) of the device to get it to reboot.
If it does not reboot, power down or shut-off, does it stay on with only the RED LED flashing.
Probably the battery is dead or dying..
i am in a similar situation.. i can only see a Red flashing LED. the tab wont reboot, go into diagnostics or respond to any plethora of button press combinations..
For those of you reporting problems with your Vpad7 - apparently not responding & only flashing red LED, can you access/read/verify your device's FTM status? Does it show any sort of boot-up sequence at all (the 3 birds being the common one for official Viewsonic Vpad 7's?
Please re-check your mSD card - you have one inserted right? properly formatted and not corrupted, readable as a USB drive when taken out & connected to a PC? Try removing any Sim card or vice versa, insert one and try to boot it up? Has the battery being charged to 100% (using the stock 2.0A charger - typically take 4 to 8 hours)?
Since it's NOT rooted and has no custom recovery installed (right !) - even a successful effort to boot into Recovery Mode won't help at all, but, it will help if you can get into bootloader mode.
Still following ... if everything checked out up to now, it's very likely that your ROM was corrupted/damaged and you need to reflash the "correct" factory ROM (RUU or *.nb0 file) using the factory utility - as discussed in the referenced link .
If you think you know what you are doing and dare to try a DIY rescue by flashing it all over (got nothing to lose anyway, it's a brick - paperweight at this point) - see if you can access the viewsonic website and download the files directly ... if you cannot download/access the files, please post here or PM for possible alternatives from my private collection now in cloud storage (it's geared mostly for newer/ITE devices, however, but not all of it) Please be specfic with your model's firmware/build & other info as shown under FTM or see your factory carton's box for the technical info.
If it's under warranty, by all means, contact support & get RMA to return it for repair/exchange - in 2 to 3 weeks (4 ?) you will have it back in working order, good as new - no fuzz, no worries & the "brick" can fly in android again.
If none of these apply, another possibility for the advanced users daring to play in a "what do I get to lose at this point situation" - to try to connect it to PC and run ADB using terminal emulator, to try to bring it back to life or at least restart/reboot it. http://forum.xda-developers.com/showthread.php?t=1229804
Good luck & I will check back soon ...
Unfortunately, mine will respond to none of these. nothing shows up on the computer when i plug it in.. not a sound, nothing. i may try booting up my old linux partition and see what /var/log/messages has to say when i plug it in..
i have an inkling that the battery has completely died though.. its a smart battery so has a PCB attached to it. if this has gone then i doubt the tab will power up.. unfortunately, replacement batterys arent easy to source..
i will let you know how i get on with it later on tonight when the GF and Kid have gone to sleep so i have some peace to potter around the house..
cheers for all your help my friend!
Today I plugged it in to my computer.
There was a white flash on the screen then same thing happened again.
The red light will blink sometimes or it will stay on as if it is charging but nothing is showing up on the screen.
Does anyone know how to open up the viewpad 7 or a manual on how to change the battery?
Puia
Gtea said:
Today I plugged it in to my computer.
There was a white flash on the screen then same thing happened again.
The red light will blink sometimes or it will stay on as if it is charging but nothing is showing up on the screen.
Does anyone know how to open up the viewpad 7 or a manual on how to change the battery?
Puia
Click to expand...
Click to collapse
removing the back is rather simple.. run a credit card or any thin plastic along the edge starting at any corner.
good luck finding a replacement battery though.. i have searched high and low and cant find then for sale to the public that isn't a bulk order anywhere.
if you do find somewhere, please let me know..
Mine is an olivepad but I think the viewpad 7 and olivepad are the same hardware wise. (I may be wrong).
Maybe we can exchange the battery with another with the same voltage rating. And maybe higher mAh rating for better battery life?
It's already bricked so I don't mind experimenting a bit.
Here are some pictures I snapped.
vpad7 wont turn on
speakfor said:
Hello!
I purchased this device some time ago and did not modify it in anyway (no rooting/flashing etc), just a stock device. After leaving it just laying around for about a month I tried to turn it on again and nothing happened. Connecting it to USB or wall charger just makes the power button red led blink intermediately.
Ive tried:
Reset button
Hard reset (vol up+vol down+power button)
Leaving it to charge overnight from the wall charger
Leaving it to charge overnight from USB
Singing to it
Specifics:
Stock firmware
Viewsonic VPAD7
Model#: VS13761
Any help would be appreciated (even as mundane as saying "its hardware is fried") etc, just want some clarify on what happened if their is no way to fix it.
Thank you in advance
Click to expand...
Click to collapse
Open vpad7. Remove the only screw top near sim/micro sd. Remove Batt. connector for 15-30 seconds, put it back turn on and charge fully. (Its bcoz of fully discharged batt.)
Thanks
NAUMAN
---------- Post added at 11:48 PM ---------- Previous post was at 11:40 PM ----------
Gtea said:
Even My Vpad 7 is having the same problem.
Can anyone shed light to the above problem?
Puia
Click to expand...
Click to collapse
Open vpad7. Remove the only screw top near sim/micro sd. Remove Batt. connector for 15-30 seconds, put it back turn on and charge fully. (Its bcoz of fully discharged batt.)
Thanks
NAUMAN
Viewpad 7 won't charge battery and power on
Hi
Seems like it might be enough to just parallel connect a phone battery, with 3,7v to the battery PCB for a short period, to be able to charge the battery again.
Mogens
I disconnected the battery for 30s and assembled it back again, but the red flashing continues and it can't be turned on or charged.
Battery is over discharged.
1 - Open it and disconnect battery connector on mother board and reconnect and try to charge. If the battery percentage appears on screen appears and moving means its charging. Charge for few hours then turn on.
2 - Disconnect battery connector and charge it for 5 mins by using any 5V 1A power source for any mobile. Then put back battery connector and charge using original charger. If no other 5v 1 A source available, you have to cut the wire of same original charger and use +ve and -ve.
Regards
Nauman
Hi,
i have a european htc flyer with LeeDroids actual custom rom (GB).
Today I drove my car, while charging it with a special 12V - Micro USB-Car Cable.
I tried google navigation and some other features and after that I chose HIBERNATE from the power-menu.
After half an hour I wanted to reactivate the device but everything I try - it simply wont start. display stays black, i tried every button (including the combination to bring it in the recovery mode). nothing works. the red light next to the power button is on (as if it is still loading).
has anyone an idea, what i can try to start the device, is it a brick? what about garantuee in this state? what should i do??
please help, thx
You need to give it time on the proper wall charger. Red indicates a completley depleted battery. I don't think you'll get what you need from a usb charging mode at this point. It could take some time to revive if you've push the battery far enough to deep discharge becasue the initial period will be used to recondition the battery at very low current.
...has been on the wall charger for hours - no effect
Can you plug it into the PC and see if it detects anything at all and if it does what is that. The other possibility is that you've somehow ended up in download mode.
I ended up in download mode on my original incredible. Not fun. See if it boots if you plug it into the pc. If so, I know how to fix it.
Sent from my HTC Flyer
nothing detected when plugged in via usb onto my pc
tried also adb shell, sais no connected device
think its really dead...
i have a flagship store in town, bring it in tomorrow -keep you posted, what the problem was/is
Let Lee know too if you haven't already just in case there is something in the code causing problems. That way he can pull it to keep other people safe.
Before anyone says "this has been answered a million times" and posts a link, I want to assure you that I have read every single thing I can here on xda before posting.
The current status of my DNA is unknown to me. The device is rooted and has been for quite a while. It is S-OFF and has been for 3 years. The bootloader is UNLOCKED and has been for 3 years. The recovery is TWRP (most recent version for the DNA). The ROM it was running was santod040's GPE ROM for the DNA. It was running that rom for 6 months.
The device had no Sim card in it. It was used primarily as a backup device if I needed it and to play a few gaming apps that I have multiple accounts with (clash of clans). The device was used only on wifi for gaming. No apps were downloaded to the device prior to the device failure. No websites were visited prior to failure. 360 security was on the device as the primary antiviral app.
Symptoms that created current affliction:
None that I know of
Current affliction(s):
Will not power on
PC USB will not recognize (running Windows 10 - HTC Sync is NOT installed on my computer)
Will not hard reset
Will not boot to bootloader
Will not charge on AC power with original HTC charger (led flashes but never goes solid)
Will not charge on AC power with alternative triple shielded cables (led flashes but never goes solid)
Will not charge with any cable via PC USB (led flashes but never goes solid)
Possible remedies to affliction that have been attempted:
Volume down and power button simultaneously - FAILURE
Volume up and power button simultaneously - FAILURE
Both volume up and down with the power button simultaneously - FAILURE
Holding power button to reset manually - FAILURE
ADB - FAILURE
Boot to bootloader - Not possible for the moment
Boot to recovery - Not possible for the moment
Power up - FAILURE
The only thing it does is flash the amber led light when attached to AC or the PC via the charge cables (I have tried many)
Any and all help or solutions to at least get it back to recovery or the bootloader would be appreciated. I have the RUU 1.15 and a stock original backup saved to the PC. If I can get to at least recovery I should be able to sideload or oem lock the device and run the RUU. But for now I can't even get a screen.
Please help in any way you can and I thank you all in advance for any assistance rendered.
I don't know,but i can only assume that the battery is dead. You can buy new battery and try to replace it yourself. I bough battery replacement for my Droid DNA in case something happens from aliexpress : http://www.aliexpress.com/item/orig...rfly-droid-dna-htl21-bl83100/32260653385.html
HTC Droid DNA Battery Replacement Guide: https://www.youtube.com/watch?v=aFCvGcG0dVs
I give just a guess.
it seems, like cirios83 said, battery is "dead", i.e. battery is alive, but it self-locked by controller on very low voltage level.
why?
something makes battery drain. in my case it was unexpectedly died sound chip tf9887. time of replacing take over 1-2 hour in service (if they have an donor).
beffore going to service you can take off a back lid, disconnect the battery and measure resistance of supply chain. it must be close to infinity.
if it is not. you will know at least, that mainboard is in trouble.
this is example of one of many reasons why phone is "dead"
cirios83 said:
I don't know,but i can only assume that the battery is dead. You can buy new battery and try to replace it yourself. I bough battery replacement for my Droid DNA in case something happens from aliexpress : http://www.aliexpress.com/item/orig...rfly-droid-dna-htl21-bl83100/32260653385.html
HTC Droid DNA Battery Replacement Guide: https://www.youtube.com/watch?v=aFCvGcG0dVs
I give just a guess.
Click to expand...
Click to collapse
Since the phone is a uni body design, I have never looked into actually taking it apart. We do have a few places where I live that specialize in repairs and such, but I am not completely sure that the battery is the issue, it had one other problem that developed about a year and a half ago. That problem was the loudspeaker on the back no longer produced sound.
Perhaps there is a loose connection in the hardware itself causing it to no longer function. It's not a pressing matter as I do have another backup device or two. I'm just a little disheartened that it's no longer functioning.
Hi,
long story short: I connected my Z5C to a bad (apparently, I don't want to test ) charger and now I have some strange issues. Is there any change that my h/w isn't fried?
Full story: As I said I connected my Z5C (newest CyanogenMod provided here) to a charger and it instantly did a hard reset. Afterwards it did turn on and continued to work for some time. As I was on the road at that time I could not charge it elsewhere and later that day it ran out of power. When I tried to charge it with a known good charger some days later, it did not boot. I suspect the boot process to healthd or whatever draws this cool animation takes more power than my working but small charger provided.
It did charge at my laptop, especially when I put it into fastboot mode.
Now thats where I am stuck; the phone won't turn off completely and keeps rebooting when I turn it off (via os menu or hard reset, no chance).
I can charge it after it runs out of power (managed to charge to 100%), but it won't charge if I unplug and replug it. It is not recognised by a pc after I reconnect it one or two times (checked with device manager and lsusb), only chance to get to fastboot or flash mode again is drain the battery to 0%. It does show a loading animation and I can boot into android from there. Battery drain in Android seems to be a little higher than usual (100 to 0 after 2 1/2 days of pure standby without any radio stuff on).
I have already reflashed the original Sony firmware and erased everything that came to my mind (cache, data....).
Any hope that I did not kill some piece of hardware?
Thanks for your answers, any help appreciated
tell me more about your z5c's software, why you mentioned Cynogenmod? did you flash it with cynogenmod?
seems to me that z5c was running on custom rom and did not support fast chargers and bricked your device!
if that so, try flashing it using flashtool with original stockrom.
i don't wana go in to details however there is possiblity that battery.sys file is corrupt and atleast I was never able to fix my LT18i when it got bricked and battery status use to become zero in 2 seconds and android keep rebooting, later it got silent for good! no charge no nothing and i still have the device sitting. I was running it on coconut (cynogenmod) when all this happened!
Thanks for your reply.
The charger was no kind fast charger, just a common 12V to USB adapter with an output of 800mA (when it worked). I was running CM 13 when I connected it to the bad charger, but as I mentioned I have since then reflashed it with Stock ROM. No real improvement.
I have continued trying and I found out that the device seems to believe it is still connected via usb.
Code:
cat /sys/class/power_supply/usb/present
gives me "1" with nothing connected, can you check if this is normal?
The file is -rw-r-- r--, would changing its value change anything or is it just some kernel thing (can't check, don't have root permissions now as I flashed Stock ROM)?
Also after I charged it on my PC today it still shows me the notifications for USB connection and adb (I can add a screenshot if necessary), also looks like it still believes to be connected.
It seems I found the solution: I was playing a bit with a USB-OTG adapter (the ones to connect regular usb devices like keyboards or storage to your phone). After I connected a USB keyboard I tried (just for fun) if the Linux "Magic" SysRq hotkeys were enabled. So I did press Alt-Print-o, which is the Linux hotkey for "turn off now". It did not turn off, it also stayed off (no instant reboot). After I started the phone again it also properly turned off via the power menu!
I will have to test whether the charging issues are fixed, too, but as far as I can tell the problem seemed to be something software-related
Sadly did not work for long. I think I will go for official repair, think this is still cheaper than buying a new phone (after completely killing it with some DIY "repair" attempt). This annoying brick simply does not turn off, no matter what I do (apart from draining battery to 0%). Guess its my fault, still to afraid to try that broken charger again.
So, I am having some problems to give a second life to this device.
I bought twice a battery to replace. The first one was clearly a second hand battery sold as new, which lasted 6 months, after which, it started to grow bigger in volume and its performance dropped dramatically lasting half an hour working. I tried to get a refund but no luck.
After that experience I tried a second seller who promises nothing less than 2 years warranty for the battery (wow). I bought a new original one and installed it. It seem in mint condition so I thought it would do it.
It worked everything aparently fine. I even installed a new custom room (i must admit that i am not sure if i did it right) But it appartenly worked. I had cRdroid with android 10 running smoothly on the phone. Not sure at this point if I rebooted after that. I think so.
The nightmare started once the battery ran out (I did it on purpose to calibrate de battery). The phone didn't wake up again. I started to have a blinking red notification led. It seemed not to be charging at all and indicating some problem with EDL mode or with very low battery. The fact is after trying long time charging, several chargers and cables, etc, i managed to get a yellow led light.
But what I can get by now is:
-if I plug a charger with a (sometimes) notification of a stuck 50% level of battery (wtf), sometimes bootloop, sometimes black screen
-Entering in fastboot mode with (vol- + power)
-Not able to enter recovery
-If I try to swich on it does not react to power button in any way.
I tried to flash all stock files by using xiaomimitool but it does not boot system afterthat (although i can get to stock recovery once at least after that)
i tried flashing twrp and it says ok installed but I cannot enter afterwards
and so on..
do i throw the phone away?
btw, it is unlocked and it is rn4 global sd version (mido)
I would have checked the battery voltage before flashing anything.
For me, I would have also taken the old, dead battery and used the the BMS PCB and connector off that and a bench power supply to power it up as a check.
Renate said:
I would have checked the battery voltage before flashing anything.
For me, I would have also taken the old, dead battery and used the the BMS PCB and connector off that and a bench power supply to power it up as a check.
Click to expand...
Click to collapse
Hello (a bit late).
I find this to be something that I should have done more than a solution now the problem is here. Even tough I don't properly understand your proposition and I find I might not possess the tools that you explain.
I never though that replacing a battery would bring this problems.
I managed to bring back to life the battery. Now is working without problems, but only because I am avoiding the phone from completely discharge the battery and I am charging it before it dies. Otherwise I have the feeling that battery will go under voltage again.
Is there something I can do to avoid this? I have checked voltage with some app and lectures seem to be normal while its working: 4.38 v and going down while it discharges. I do not have the old battery.