TV Screen is completely Green when I turn tv on.

TV Screen is completely Green when I turn tv on.

When i first turn my Bravia KDL-55EX500 TV on i have a completely green screen but can hear sound. After 5-10 mins the green screen disappears and the tv starts to work fine. Then it will start to flicker green on and off while watching it. Ay Ideas? Connections seem good and i have never had any issues before.

ANSWERS: