A:AnswerI would definitely check all my connections. It sounds like at least one of your cords isn't pushed in completely. The two I would focus on are the power cord and the cable connection.
A:AnswerThe box (70") read 150 lbs... Though it was relatively light for two of us to carry and hang by ourselves.
Other than the size being a little cumbersome...the weight was barely noticeable.
Hope that helps
A:AnswerI bought this tv and regret it. Picture is bad and very flimsy quality. The wifi also doesn't work often and you have to unplug the tv to reset it. I returned it and bought a vizio m series. The M series beats the samsung 6 7 and 8 series and comes very close to the samsung QLed line up.
A:AnswerMine which i bought in Oct.2019 DOES NOT support 5 ghz. It only lists 2.4. I do have to say that there's no lag in watchig netflix on 2.4. I also have fire stick and roku which i can use with 5ghz. But gotta say can't beat 550 for 70 inch!