NO SIGNAL olevia 27" Model 227. MY OLEVIA 27'' WIDE SCREEN LCD PURCHASED LAST YEAR. WORKED

Question

MY OLEVIA 27'' WIDE SCREEN LCD PURCHASED LAST YEAR. WORKED FOR A YEAR IT SEEMS JUST AFTER THE WARRANTY EXPIRED IT STARTED TO GIVE ME A NO SIGNAL ON THE TV AFTER IT WARMED UP. SOMES TIMES IT WILL GO FOR 15-20 MINUTES AND THAN EVERY MINUTE, UNTILL I TURN IT OFF LET IT COOL DOWN 1/2 HOUR OR SO. I HOOKED UP A DIFFERENT TV AND IT HAS BEEN WORKING FINE ALL WEEK. WHAT IS THE PROBLEM AND WHERE DO I GET THIS FIXED . [e-mail] All of a sudden our AV input stopped being recognized. I've had the TV about a year.