ladywiccana

Hi Hope no one else has this problem! I am sorry if this has been on b4 but i am new! My monitor which is a 19" Benq tft flat screen monitor, every now and again goes off! It doesnt actually power off, but the screen just goes black and then after a few seconds its back on! I have checked and rechecked all my leads and now am not sure what else to do HELP PLEASE? lol.