All of a sudden last week when I turned my computer on my monitor refuses to turn on. The power button light would flash continuously but the screen would stay black. after about 10 minutes it would come on. Today it refused to turn on for over an hour and a half and I had to switch to a different monitor. It was a 19" emachine monitor, can't remember more than that. The cords all look pretty good and were plugged in properly. The monitor was over 5yrs old but still in good shape. Is it reparable?