I know you have had this one on your 4600
I am replacing the TV in the fwd stateroom.
Not sure if the old one was original but it was screwed down to a wooden plate which in turn is screwed down to the counter top port side.
On the starboard side there is a nice little hatch.
Port side looks like a closed box but. That wooden plate is screwed from underneath.
So what is the trick, how does one get in there without getting destructive?