viewsonic monitor AFTER 1MINUTE SHUTDOWNmodel no.VCDTS21915-2P

IF I ON MY MONITOR THE MONITOR FUNCTION NORMALY THE L.E.D LIGHT GREEN BUT AFTER 1MINUTE THE SREEN DISPLAY HORIZONTAL LINE IN THE CENTER AND HOT POWER SHUTINGDOWN ALMOST HALF POWER AND THE L.E.D LIGHT IN ORANGE NO BLINKING I'LL CHECK THE POWER SUPPLY SECTION ALL COMPONENTS ARE GOOD AND I CHECK ALSO THE HOT OK IF I DISCONNECT THE 3LEGS OF HOT THEN I TURN ON AGAIN THE MONITOR AFTER 1MINUTE AGAIN THE MONITOR SHUTINGDOWN AGAIN THE L.E.D LIGHTS IN ORANGE. PLEASE HELP ME IN THIS PROBLEM

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