How to fix a tablet when it doesn't turn on when its charged?

it will be the battery - the batteries can only be charged a certain number of times
cost of battery approximately $25 USD plus shipping costs
moderate difficulty in opening tablet see below video
https://www.ifixit.com/Guide/Tagital+T10+Battery+Replacement/72817

Had a different tablet that was a kids tablet
was told by a seller/ retailer that it was impossible to replace the battery.
However I figured out how to open up tablet and purchased a replacement battery on line and fixed tablet.
hardest part was figuring how to open tablet ...

Don't know if this will work but put it in a cold place for couple days then re-try, don't mean freezer tho lol.;

Help My tablet won turn on what do do

Why Does My Android Phone or Tablet Not Turn On

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What to Do When Your Android Phone or Tablet Won't Turn ...

www.howtogeek.com/.../what-to-do-when-your-android-phone-or-tablet...

May 16, 2015 - You turn on your Android phone or tablet by pressing its power button ... Charge Your Phone or Tablet For a Few Minutes ... If it doesn't work at all, try plugging the device in with a different .... Get downloadable ebooks for free!

Check battery, battery plus should have it and can check it

Try a hard resset if it wont fix ur problem then u need a new battery

cant connect to google i got a gmail still wont let me connect my wifi works on it thats the only place i cant go

1. Try a new charging cable.
2. Make sure charging port is not broken.
   These are the most common issues with tablets.
   If none of these work, contact samsung support
   @1-800-726-7864
3. Or live chat: http://www.samsung.com/us/support/

Is there a charging indication? if so, keep it off, and leave it plugged in, for a long time. I'd say a few hours to a day. Then try to turn it on.

The exclamation mark means that your tablet has no battery left. You should try plugging your tablet in for a few hours before turning it on (if it doesn't turn on by itself.) If that doesn't work and you still see the exclamation mark, I suggest that you ensure the charger is properly plugged in to the socket and that its properly attached to the tablet.