I have an Envision tft1980 Model EN9110 flat screen 19"monitor. every few minutes it blacks out for 1-2 seconds. It doesn't seem to loose power as the green light is still on but it blacks out. Any Ideas why?

If you are going to DIY repair, please read below and look at the pictures so you will know what to look for, most LCD monitors have the same problem.

Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.
http://en.wikipedia.org/wiki/Capacitor_plague

http://www.badcaps.net