Sorry to be the bearer of bad news... but I think the monitor is gone kaput. It happened to my old LG monitor. I spent some amount of money on it but it went out again. Also, even if you get it locally repaired, I don't think they will provide any warranty for the repairs. My advice to get it checked once, see if you can get it repaired for cheap, if not, just buy a new monitor and chill. 
