hello Tsar,
yes, that what you have got, we call a boot loop, because loop is never ending. One or few components have a short in their circuit so it makes a signal reset to zero. The important thing is that the fault is not in the main rails because the battery is not running out of power. That can be accessory like cam, antenna set or internal problem in a mainboard. Opening of device is nesesery, couple of tools and knowledge. If you haven’w it, use a repair shop. Opening iPad by less experienced people often leads to irreparable damage. A repair of that should by not be longer like 45-60 minutes.
* regards,