Samsung SyncMaster 920NW

In the first instance I would check all connections. It could possibly be a wire not making proper contact. If that doesn't help, then look for the degauss or restore option on the monitor!

I have the very same problem and I have no knowledge of the backlights of LCD panels. Is there any way to fix this yourself?

BENQ Q7C4 monitor shuts down after 5 seconds of login screen display

The 920nw did have a 3 year warranty on the unit but they will be out of warranty now. The flickering power light is an indication of a failure in the power supply board. When the board fails it can't start up correctly and the power shuts down over and over so you get the blinking light and no display. This is a very common failure point on all LCD monitors after a few years of use. There are parts called capacitors on the power supply board and they filter the output power. When they fail the power is not properly regulated and the power supply shuts down and tried to restart so you get the flashing. Here is a link to a repair guide that will show you how to dis-assemble the unit and then what to look for and replace to get it back up and running again.

http://www.ccl-la.com/blog/index.php/repairing-the-samsung-920n-920nw-monitors/

The repair guide has pictures and videos to guide you through the repair.
I hope this helps, if so please rate my solution.

BuddyMc

try to adjust it from display setting...

Samsung syncmaster 920nw 19 goes black after 2 seconds

Once you get a dead pixel (black dots), there is no way to repair that part of the screen

This is due to backlite problem of LCD panel.
You may approach authorised service center for this issue they will solve your problem. Do not try to do yourself unless you have sufficient experience on LCDS.

please try to check / use the display adapter device (like nvidia if this is installed in your PC) settings control panel instead of the System->Preference->Screen Resolution option then you can obtain the desired graphics display. best regards

The issue here is that you have a low resolution picture and a high resolution display. Windows is "stretching" the smaller, low resolution picture so that it will fit across the larger area, thus distorting it. Right click on the desktop and select properties. Go to the Desktop tab. There should be an item there for position. Is it set to Stretch? If it is, then this is causing the problem. Set it to center, and it should appear fine. If you want to keep this from happening: 1) User higher resolution pictures. 2) Turn down the resolution on your screen (this can be done from the Settings tab of display properties).