Monitor problem (by 2 users)

I have a Likom HD19A monitor. Its about 1 1/2 years old. I usually leave my computer and monitor powered on all the time. The monitor started failing to come on when I would press a key on my keyboard. If I turned the monitor off then back on and it would come on and work just fine until the computer went to standby, then I would have to turn monitor off and on again to get it to come on. Note: green led woud always be ON. Recently when I would turn it off and turn it back on it started showing a blank, "cream" colored screen. Then maybe it will work and maybe not. Could this be a "back-light inverter board problem, or something else that is repairable? Or, has the monitor finally gone bad? I have a second identical monitor and it works fine, so it is not problem within the computer itself. Thanks.