[S4 Mini - I9192]Stuck on splash screen

Hello.

Here are some things that i think that are important to say first:
1- The phone simply powered off by itself while my brother was watching YouTube videos, a 1 second freeze, then powered off.
2- After many researchs over internet, i discovered it was probably an hard brick.
3- Searched about how to debrick my phone, and i god an solution that needed an 16 or 32gb sd card, an img file and an Windows app.
4- After done the process, the smartphone finally give life signals again.
5- However, it doesn't go further than the splash screen, so i downloaded Odin and an new firmware at sammobile.com
6- Flashed it, was a sucess, but the phone got stucked on the splash screen again.

--------------------------------------------------------------------------------------------

Well, so i came here to try to find a solution.
Is there any thing i can do to bring the smartphone back to life? All that i can see that can bring it back is an motherboard change.
Is there something that i can do with Odin or other tool that can solve my problem?
Also, i flashed the stock firmware two times, and flashed an custom recovery too (TWRP), but even with it, i can't go to Recovery mode, Download mode works normal tho.

Thanks in advance!