Tv wont turn on, geen light flickjers but goes back to red and does ot turn on, i unplugged tv while it was on by accident.

The main board and or power supply is seeing a problem is shutting down the TV.
The cause for your issue could be the power supply, main board, and or the drive board(s) that drive the plasma screen. Sorry, but to trouble shoot that issue would require some TV tools and knowledge of electronics.
Perhaps the following can help you with a warranty repair.
1. If your TV was purchased from January 1 2008 to today---The TV does have a 1 year warranty on parts/ labor and a 2 year warranty on just the plasma screen.
2. If your TV was purchased before January 1 2008---The TV does have a 2 year warranty on parts/ labor and a 2 year warranty on just the plasma screen.
I hope this information has helped you.
Good Luck.