The Contrast/Brightness menu pops up in the center of the screen (as if you push the menu button on the monitor). The intervals are completely random and the time it stays up is also random. Sometimes it adjusts the cotrast, but usually it just goes off. Also, I can't turn off the monitor with the power button.
I should note that I have dual screens, both ACER 1914 black/silver.
This has happened before (about 4 months ago) and lasted a couple days, then stopped as suddenly as it started. Weird.
Have you found a solution to this problem? i have the very same problem. i have taken apart the back of the monitor and found that if i take the small circuit board that is plugged into the power switch it goes away leading me to beleive that it is this small board but i do not know where to get it at. the number on the board is ar577 vk-583 rev:1. any help would be greatly appreciated. my email address is firstname.lastname@example.org
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Not sure if this is exactly the same as yours your model hard to find I had 2 similar monitors at previous employer and they both operated the same way
Taking a Look
1. Power Switch
Pressing this button turns the display system power on or off.
2. Menu/Select ? Pressing this button pops up the OSD menus on the screen, and used to
select ("Up" direction) the OSD control options on the screen.
? This button is used to select ("Down" direction) the OSD control options on
4. + This button is used to increase the value of the selected OSD control option.
5. 0 This button is used to decrease the value of the selected OSD control option.
Quick Adjustment Function
When the OSD Menu is not active, the following functions are available for the quick
Pressing ? button once pops up the OSD Function Main Menu .
Pressing ? button once pops up the small Brightness icon. Use +or 0button to adjust
the Brightness level.
Pressing + button once pops up the small Volume icon. Use +or 0 button to adjust the Volume level.
The second button from the left on the bottom corner by the power button is the brightness button. If you press it the brightness menu is pop up on the screen. With the menu up you just use the three buttons on the left to select the function and the increase or decrease the brightness and contrast on the monitor. BuddyMc
It seems to be a hardware issue with the buttons. They are stuck or the rubber cushion under the button has gone bad. That's the reason they are getting pressed automatically. You may take to a local store for a small repair.
Try pushing the buttons for the brightness if it does the same thing you need to replace it, the buttons might be damaged already by pushing too hard or it got stuck. If this is just a new LCD monitor about 1 to 2 years old contact tech support of dell so you can get this replaced.
the micro switches on the monitor are getting short which is triggering the menu, try to clean it with a switch cleaner or check if the switches can be replaced, do this only if u r an expert in handling things like this or take some proffessional assistance.