i thought I'd be ambitious and try and wall mount the tv myself. I got a stud finder, and had terrible luck trying to find the studs. on the few passes where it could detect a stud, it wasn't consistent (def. not enough to try and mount the tv to it). This is a newish condo (8 years old) and I am mounting on an interior wall
I eventually went the method of drilling small holes and seeing where there was drywall vs. stud based on what the stud finder told me. Originally I thought this was going ok, as I was distinctly able to tell the difference between drywall vs. something else. The problem was i tried doing the same thing 12" down vertically, and I got different results (shifted over 1/2"). I figured I was doing something wrong given that studs should be straight, so I did a second set of drill holes and got the same result.
I eventually took over the cover on the wall to the cable line, and i saw the drywall as expected, but i also saw a ~1/2" thick piece of wood directly behind the drywall. There was a hole cut into it to feed the coax cable/phone line to the jack, but it was small enough I couldnt peak around to see what else was behind there.
Anyone familiar with home construction know what this could be? I am at a point where I dont feel comfortable doing this myself, but am trying to assess the situation before i spend the money to hire someone to come and do it.