I used to work in the AV field, and there are methods that ensure the TV ends up the wall exactly where you want it. Hitting the studs with lags is huge, but also predrilling those holes, and laying out your measurements ahead of time make it as clean and precise as possible. Fishing the data wires up and down a stud bay is actually really easy (assuming you’re not fighting insulation or a fire block), I can see power going squirrelly if the plug down low isn’t a straight shot up the wall and the installer isn’t privy to electrical work.
PSA: don’t run power extension cords inside a wall cavity! It’s a code violation and those cheesy 16awg extension cords from Home Depot will heat up in the wall because they don’t dissipate heat properly in confined spaces.
I used to work in the AV field, and there are methods that ensure the TV ends up the wall exactly where you want it. Hitting the studs with lags is huge, but also predrilling those holes, and laying out your measurements ahead of time make it as clean and precise as possible. Fishing the data wires up and down a stud bay is actually really easy (assuming you’re not fighting insulation or a fire block), I can see power going squirrelly if the plug down low isn’t a straight shot up the wall and the installer isn’t privy to electrical work.
PSA: don’t run power extension cords inside a wall cavity! It’s a code violation and those cheesy 16awg extension cords from Home Depot will heat up in the wall because they don’t dissipate heat properly in confined spaces.