It suddenly "stopped working", does not display anything on the screen

I can access my file when I plug it to a computer, My first thought was the screen has a problem so I replaced a new screen but no change I also replaced the mother board and no change

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0
crwdns2934285:0crwdne2934285:0