Self Shutdown problem with Onda V989

[AC Question]

I purchased Onda V989 AIR Octa Core Tablet PC 9.7" IPS Allwinner A83T Octa Core 2GB+32GB Android 4.4 on 3 December, 2015. I received it in January, 2016. After just one-month's use it has started giving me problems.
While browsing or playing basic games ( Candy Crush etc ), it just shuts-down by itself. Battery level is always adequate, and its not on low battery.
This self shut-down issue has increased so much, that I am thinking of just throwing away this tablet in trash.
I contacted the seller on AliExpress, but they have not been very helpful to solve my problem. I am 100% dis-satisfied with the reseller at AliExpress website.
Does anyone here has any idea , what can be the issue ? and how to solve the same ?
Thanks in advance.
Omar Chaudhry
(email address removed by moderator)

 

[dpham00]

Please don't post your email address on this public forum

 

[B. Diddy]

Welcome to Android Central! Try booting into Safe Mode, which temporarily disables all 3rd party apps. On most Android devices, while powered on, press and hold Power until the Power Off menu appears. Press and hold the Power Off selection until the Safe Mode prompt appears. Tap OK.

If the problem disappears in Safe Mode, then something you installed is causing the problem. You may have to uninstall apps one by one until the problem disappears. If the problem persists in Safe Mode, then it's more likely to be a hardware or firmware problem.

The reason we ask people not to post their email addresses or other identifying information is to protect your own privacy.

 

[Steve_R]

Same make and model..same problem. It must be a common problem.. Tried the safe mode and still shuts down so can't be apps. I suspect that it might be that the tablet is shutting down because of some faulty software that's telling the tablet that the battery is dead even though there's plenty juice. Doesn't shut down at 100%down to about 80% but below that it shuts down randomly and repeatedly. Definitely seems to be worst at around 77%... Any ideas anyone..except "bin it" because that's what I'll be doing with it soon. What a waste of good money. Chinese tech is absolute crap..don't ever be tempted to buy just because it looks cheap and high spec.. Expensive lesson learned!
Help please!