My wife has wanted me to hide the wires going to the TV for some time now. This is what I started with, a TV with lots of wires going to it.
This is my secret weapon, electrical pass through boxes. These and a hand held hole saw did the trick.
I ran into problems right from the start, electrical wires that were in the way. They had to be moved to the right slightly. They also made cutting the hole a bit tricky.
Then there was a second problem, there is a 2x4 going cross wise in the wall. I cut it off on the right side and then cut off the nails.
Last was to hide the cable and internet cables behind the baseboard. I cut a grove in the sheet rock and a grove in the baseboard.
Time to patch up the hole where I had cut through the cross wise 2x4. A piece of thin plywood like luan works for the backing.
This is the almost finished product. Now to repaint the wall....