A:AnswerFirst try to contact the manufacture next if, not contact Best Buy, then if you have at lease 1 screw check your local hardware to see if they can match a screw close to what you have.
A:AnswerYes. The volume and sound quality is pretty good. Insignia TVs tend to have generally good speakers, although I did install an Insignia sound bar with subwoofer to get a powerful theater experience.
A:AnswerNo, Its not a smart TV. You can get a Firestick or a Roku box and make it a smart TV. Or most Blue Ray players have all of the options like Hulu, Netflix, Amazon, and several others.
A:AnswerThe television dimensions are:
Product Height With Stand 27.9 inches
Product Width 44.2 inches
Product Depth With Stand 10.2 inches
Product Height Without Stand 25.6 inches
Product Depth Without Stand 2.4 inches.