@renatoarioza download the service manual for your Vostro [https://www.dell.com/support/manuals/en-us/vostro-14-5402-laptop/mkb_5402_servicemanual/disassembly-and-reassembly?guid=guid-9cb09cfa-bbf6-48b0-bc0f-9cda94c3fa42&lang=en-us|from here] Page 91 will show and tell you how to get to it and how to replace it. It's a pretty involved task, but ***you got that***! Remember that
Repair is War on Entropy!