Bests & Worsts Reviews from Amazon

I purchased this tv from amazon right of way the moment it became available. Delivery was quick and smooth. I got it installed on wall by geek squad. Guess what after 4 days anything I watch picture was disturbed with purple lines horizontally on all over the screen. if I play apple tv or blue ray it was fine.I contacted sharp and I was told they will get back to me. Email photos etc. I was given case number. Nothing heard then I contacted amazon and they got hold of them and they scheduled tech to come out. Before they come out I called geek squad so they can come out and take a look as my power was behind the tv so we can do hard reboot from wall so they tried doing that and guess tv is totally gone blank and it was giving 2 short and 3 or 4 long power signals which mean your main board or frc need to be replaced. Anways 2 days later local tech called to schedule appointment and he asked my my situation and said same thing that you need new main and we do not even have parts for this tv so it might take months. I called amazon and they said we will replace it for you. After 10 days later received new set and guess what same thing purple lines across the tv if you play anything less than 4k or 1080 picture is disturbed. Contacted sharp support again and I was told please email pictures and we will get back to you. After 2 days receieved email that pictures are not clear so do not attach please email in a folder. ok done that and till now its over a week I am still waiting to get back to me what the heck is going on with these TV's. Why it works for few days and I really wanted to know the issue. I know I can get replacement again but I need to know what is the issue??? Is anyone else facing same issue as you can see on my attached pictures. I was very excited about this tv since I found out in july. I waited I thought I will get tv by September but it was never available till October. I think sharp needs to do better job or action especially when product is fairly new and diagnose issues send a tech out to see what is causing these issues instead of emailing them stuff. I will update you once I see what happens! Update I was contacted by sharp tech....Mother board issue ..You got to be kidding me 2nd brand new tv same issue after 4 days. Let see what they are going to send me this time