WiFi Connects and drops at random

My WiFi on the Samsung Galaxy tab 3 10.1 GTP5210 will sometimes connect to a network (if at all) and then drop connectivity after a few moments. I've performed a hard reset, a factory reset, tried multiple networks. I am wondering if this might be a physical component I can replace for a WiFi antenna and if so any recommendations on doing so. My next step is to try a firmware update but I am not hopeful.

Got the tablet for free from work because of the issue so I am trying some cheaper options to fix before giving up on it.