Just as the others,stays on for a couple secs then go blank. If I power down and back on i ts on for a couple sec. Checked voltage on supply its 12.3 vdc
Point a flashlight at the screen when it shuts down and see if an image is still there. If so, it may be the backlight inverter. You can try to get the part, but most shops would charge you more than a replacement.
To verify, before you pitch it, try it with another monitor and see if the same thing occurs. Ran into a case where something downloaded reset the power-saving settings for the backlight.
Answers & Comments
Point a flashlight at the screen when it shuts down and see if an image is still there. If so, it may be the backlight inverter. You can try to get the part, but most shops would charge you more than a replacement.
To verify, before you pitch it, try it with another monitor and see if the same thing occurs. Ran into a case where something downloaded reset the power-saving settings for the backlight.