The 2nd and 3rd TV's "see" the following DLNA media sharing apps that are running on my PC:
Windows Media Share, LG Smartshare and Tversity
However, the QN55Q60TAFXZA only sees Windows Media Share. Each of the 3 apps "see" all 3 TV's (i.e. show them in their list of authorized devices). Since all 3 TV's are connected to my wifi network, I have no idea as to why the one TV doesn't seem to recognize the other servers/sources.
I have perused the settings on all 3 TV's and on my router looking for any differences, but found nothing.
Can anyone help me solve this mystery? I even reluctantly tried the extreme step of resetting my TV, but all that did was require me to reinstall several apps and redo logins, etc.