Have TV Questions? Ask a TV Technician
Hello and thank you for your question, I look forward to assisting you today. Is this Viewsonic monitor? If so and you are using Windows, you can easily set it to keep the monitor on until you turn it off.
I understand completely. What version of Windows are you running?
Very good. Right click anywhere on the desktop and select Personalize. When the next window opens, click on Lock screen. Scroll down to the bottom of that window and select Screen Timeout Settings. For your settings, you will want to choose the When plugged in options. Set them to what ever time you would like. Let me know if you need further assistance