Random reboots?!

[James h3]

Hello fellas,
my nephew dropped the tablet from like a meter and it landed on his feet and also hit the rug.It was in a case, and i worked with it for a few minutes and everything looked fine.
The tablet randomly reboots. I played a movie for 20-30 minutes on it and i noticed no reboots. But when i turned the wifi on and opened play store to download some apps or when i was reading a pdf using Hancom office, it rebooted itself.

I also noticed a battery problem. I posted another thread about it:
(couldn't use the built in link button, because of low post count!)
forums.androidcentral.com/samsung-galaxy-tab-s-10-5/436117-battery-problem.html#post3888300

the battery percent changes randomly. It goes down(some times from %96 to %75 and sometimes the way it's supposed to go down, one by one) and then goes up to a random number.
It also took 12 hours for the tablet to be fully charged last night.

Do you think the reboot problem is because of the fall?

How long does yous last and how long does is take to be fully charged?

Do you think that it can be fixed or I have to buy a new one? Do you have any solutions that I can try at home?
thanks.

 

[B. Diddy]

Welcome to Android Central! Try booting into Recovery Mode and wiping the cache partition, which won't erase any personal data. Follow the steps in Solution 2 of this link, but instead of choosing Wipe Data/Factory Reset, make sure you select Wipe Cache Partition. When complete, select Reboot System Now. Samsung Galaxy Tab S 10.5: Hard Reset Factory Reset - SolverBase.com

 

[James h3]

Thanks for the link.
I've tried both Wipe Data/Factory Reset and Wipe Cache, but it didn't help. Any other advice?

 

[B. Diddy]

I wonder if the fall might have loosened something inside. Unfortunately, I can't easily find any videos on how to open the device up to check connections, so you may have to bring it to a repair shop, or contact Samsung for warranty work.