my wega tv

Hi.
 I have a sony Wega i think it is a 52 inch...not sure...model number is KDI-E50A10, the tv is on and will auto shut off and on every 30 seconds or so it is aprx 45 flashes everytime it does this. the picture is still fine, the sound is fine, it just shuts off and on.
my email is [email protected] any help is wlecome!
thanks so much for your time.