I've brought this issue up in a separate thread but figured I'd make a new post to see if anyone has had this issue or knows a solution.
Was using my computer/display throughout the day without any issue. Turned off my computer to go to dinner and came back later, turning my computer/monitor back on.
Computer booted up fine, monitor did not seem to turn on. Figured it may be "asleep", so I rebooted the computer again - no luck. At this point, not even the backlight of the monitor was turning on. I was unable to access any menu on the monitor and even the power button seemed unresponsive.
I did some digging to see what the issue may be/what the solution could be. I read previous posts on this forum and around to try and figure out the cause.
The issue: the monitor will not turn on in any capacity. I am not even at the point where I get the "no input source" nor can I use any of the buttons on the monitor to bring up the OSD menu. The power button seems unresponsive in that after unplugging the monitor, and plugging it back in, the power light will come on, but if I go to turn off the monitor and then turn it back on, the power light no longer will come on as if it does not even understand the input.
What I've tested:
I've used two separate displayport cables to rule out the cable being at fault. I've used two separate power cord (both supplied by Dell monitors) to rule out it being a power cord issue. I've plugged these power cords into separate outlets to rule that out. I've tested the monitor on two separate computers, to ensure it was not an issue with the pc/video card. I have tested the monitor using HDMI as well as display port. I have unplugged all cables, held the power button down for 8 seconds (as suggested here) and plugged back the power cable and display port.
None of these tests had any results. As mentioned, the monitor just seems to not come on in any capacity. If I had to guess I would say the blacklight stopped working, which seems odd as I've had the monitor for 12 days now and hadn't had any indication anything was failing.
To summarize how the monitor is acting: when I plug in the monitor, the power light will come on, but no images will appear on the monitor, and the blacklight does not turn on - just a powerless screen. If I go to press the power button off and then on, the power light indicator will not come back on. The only way to get the power light indicator to turn on is to completely unplug the monitor, let it sit ant then plug it back in. Any attempt to turn on/off the monitor subsequently does not seem to turn the power light indicator back on.
Nothing has been altered between when the monitor was working and when it failed to turn back on. The display port cable, hdmi cable, power cord and the computer(s) are all functioning and have been ruled out as the issue. I have followed the included troubleshooting guide that came with the monitor and other suggestions posted on the Dell forum.
I have filed a return form to send this monitor back as I believe it is defective. Is this is a known issue, or this is a known issue with a solution, please let me know.