Late to the game...
I've had my Olevia 747i since 2007 and it is still working nearly flawlessly. My issue is, HDMI seems to have audio dropouts on PS4 and the only way to fix it is to unplug the hdmi cable and reconnect it.
I am attempting to update the firmware from 747-B11_v63.7A17 to 747_V63.7.5, but I am getting no where. The TV goes through the install and says no update needed. Do I have the most current firmware for this TV? Thanks in advance.