Hi!! I have a Samsung syncmaster 2493HM. The problem is that when I turn on the computer the screener doesn't work. (no blue light on bottom). But if I put something hot to heat the screener then the blue light starts blinking fast and after a while (keeping the heater source) it starts working. whats happening what should i do?

Go to system preferences > displays, then there's an option to rotate the display. You'll also need the corresponding cable to connect it. Enjoy the mac!

try to check your power cable if it is plug in.

With my Samsung 2493hn, I used HDMI. Use auto detect, on front next to secondary power. Not the main power switch on back of unit. Windows 10, click notification button lower right on Taskbar. Click on Project, then choose which option.
If when you power on Monitor without white squares with HDMI, ANALOG, DIGITAL printed in each then yes sounds like back light.

Hello,

The Samsung 2493HM monitor are known to have an issue with the power supply. When the power supply fails you get the 'no power' or 'slow to show picture' problems like you are having. The board can be repaired and the monitor will be just like new again. This is what the power supply board looks like:

Here is a link to a free repair guide that will walk you through the repair.
http://www.ccl-la.com/blog/index.php/reparing-a-samsung-2493hm-24-lcd-monitor/

I hope this helps, if so please rate my solution.

BuddyMc

Power off the computer leave the monitor on then go to the computer power button once computer is off and unplug the cord press and hold the power cord down for 5 seconds you should see a blink of light then plug the computer back in and reboot the machine. If this does not work get another monitor to check the video card borrow one to see if it works with a mock monitor if that does not work then it is your video card that is the issue and not the monitor. Change out the video card. if the mock monitor works fine then your original monitor is broken and will need to be replaced.

I had the same problem, i took out the power cord and after 3 days i put it back. after that the monitor was working normal again

The Samsung 2493HM monitors have an issue with power supply failure. When the board starts failing can be slow to show a picture, have no power at all or have a way or flashing picture. Your monitor sounds like it falls in the slow start category. The power supply board can be easily repaired and the monitor will be just as good as new. Here is a link to a free repair guide that will provide a step by step instructions showing you how to disassemble the unit, check and repair the power board.
http://www.ccl-la.com/blog/index.php/reparing-a-samsung-2493hm-24-lcd-monitor/

I hope this helps, if so please rate my solution.

BuddyMc

Look at the power supply first, look for burnt parts, bad capacitors, etc.
http://en.wikipedia.org/wiki/Capacitor_plague
Please post back what you find.

Look at the power supply, look for burnt parts, bad capacitors, etc.
http://en.wikipedia.org/wiki/Capacitor_plague
Please post back what you find.

Hi,
Probably there are another available solutions but I think you should respect the monitor native maximun recomended resolution taking into consideration to change (if it is posible) between 16 or 32 bit of deep.
I have the same monitor as you have.
Hope, temporaly it help.