i had a similar problem with a sony monitor, it was pretty old and i did not wait for it to got that bad but the output filtering caps on the power supply went bad, replaced them and back to life. been running for 3 years like that now, i salvaged the caps from a dead ATX supply. if you can do that it is a good idea to take a gander inside the display, unplugged that is, if it is dead anyhow you will not make it worse, and you have a chance of fixing it maybe even for "free" (for filtering caps, take the same or higher rating and it will work, if it contains 16V 120 uF and you got 50V 200uF those will work the same, if you can fit them)