Samsung syncmaster 305t + 8800GTX ultra msi

2560 x 1600 at 60 Hz support . if may v sync 75Hz need to check the adjust.

Visit Samsung official website. Gopakumar Gopalan Google

T-con board problem , the Altera chip on the T-con board is having a bad connection to the t-con board or there is some cracked solder , there is only one solution, the Altera chip needs to be reballed SAMSUNG MONITOR 305T REBALLING REPAIR

The flickering problem you have is caused by the monitor's t-con board, The Altera chip on the T-con board is having a bad connection because of dead soldering points or cracked soldering joints, the solution for this problem is to have the T-con board Altera chip reballed, its a very advanced repair , only one place will fix it for you and I will add a link for it, you won't easily find a replacement T-con board for this monitor and Samsung is no longer supporting your monitor so that place is your only hope. SAMSUNG MONITOR 305T REBALLING REPAIR

Videocard, obviously

If you wish to get some details; visit the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/

since no one answered this, I had the same issue, It was pretty basic but when nothing is connected to the screen (the DVI cable is not connected to any device) it loops in red green blue and white. So just connect something to it and it should work. This monitor is not the most practical since it has no menu and just 1 port.

You're either using a single link DVI cable (you need a dual link DVI cable for 2560x1600 resolution), or your video card doesn't support dual link DVI (which is required).

Please look for bad caps as shown in my pictures, http://s807.photobucket.com/albums/yy352/budm/Samsung%20205BW/
Common problem on all LCD monitors.

http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague
http://www.badcaps.net

i need a better picture picture, help