AVS Forum Special Member
Join Date: Sep 2007
Location: Give a monkey a brain...
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If you need to run power and LV anyway, you'll need to cut a hole. Cell phone cam is useful for looking around in the hole. I taped my cell phone to a ruler to make sure I didn't drop it, when I made a recent hole.
First step, mark studs with a stud finder. I suggest some lightly applied painters tape.
2nd, mark the ideal TV placement outline with tape.
3rd, mark a single gang LV ring cutout, with pencil.
4th, keyhole/jab saw cut.
5th, look around inside. If there is an obstruction, cover with a blank plate and choose another spot within the TV outline. If good, enlarge the cutout for your TV box. I don't know if all power bridge cutout are larger than a single gang LV cutout, but I think they are. You can choose a different power bridge than the one pictured above.
Obviously, try to pick a stud bay with an existing outlet.
If you must cut through the vapor barrier, repair the hole with a small piece of new vapor barrier that will be stretched behind the box. Use Tuck Tape to fasten, and to cover cable penetrations. I don't think most people would do this - just a suggestion.
Believe nothing, no matter where you read it, or who said it, no matter if I have said it, unless it agrees with your own reason and your own common sense. -Buddha
Give a monkey a brain and he'll swear he's the center of the universe. -Fishbone