Question about Samsung SyncMaster 913V 19" Flat Panel LCD Monitor

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Resolution Issue "Not Optimum"

I got a sumsung SyncMaster 913v and one of the problems seemed to be the old 15 pin cable so i bought a new one and plugged it in and it worked. The resolution wasn't to my liking though so i changed it from 1280x 960 to 1280 x 1024. Anyway when i did that the screen went black and nothing ever showed up. I rebooted the computer and this message started floating around the screen "Not Optimum Mode. Recommended Mode 1280x 1024 60Hz" the screen looks like the one that shows up when you plug in the monitor without plugging in the 15 pin. the message is in a box like the "Check Signal Cable" window. Anyway I've tried changing the resolution back all different types seeing which one worked previously because im not totally sure that 1280x960 was what it was on. And the settings have never left 60Hz. Any advice or a solution would be great

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Re: Resolution Issue "Not Optimum"

Hi Guys.
I have had this problem and after a bit of searching found that it is a known problem.
Give Samsung a ring and if it's in warranty they will replace it

Posted on Mar 13, 2008

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Samsung syncmaster 913v gives message ' not optimum mode"

The 913V has a native resolution of 1280x1024. If you use a higher resolution than that, you'll get slightly blurry text. If you use a lower resolution, then images will be slightly choppy around the edges.

To get rid of the message, set your resolution to 1280x1024.

In Windows XP, you do this by right-clicking on the background (desktop) and selecting "Properties" to bring up the display properties.
Select the tab marked "Settings" and look for a "Screen Resolution" slider. Move that slider to the right until it displays "1280x1024" and hit "OK"

Oct 03, 2010 | Samsung SyncMaster 913V 19" Flat Panel LCD...

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Syncmaster 913v not optimum mode

I just resolved this problem for my SyncMaster 913N.
It seems to be a known issue, however it can take quite some time for the problem to occur. In my case about 3,5 years, so well out of warranty.

Short term solution: unplug your monitor from power. The switch on the front is not good enough. Pull the plug and leave it for an hour or so (all night if you can). Good chance the monitor will work next time you power it up.
The problem will is likely to come back..

Permant fix requires some basic soldering as per this video:

I just managed it and it has been ages since I soldered a resistor so you may very well be able to do it. I spent $25 on tool and part and saved me from buying a new monitor.

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2 Answers


When you can't change the screen resolution then most likely only the default VGA driver has been installed. You need to install the graphics driver of the video card that is installed in your computer.
To check which graphics driver is installed, click on Control Panel - Display - Settings - Advance - Adapter tab. If the graphics adapter is set for Standard VGA then the graphics driver was not installed.

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Not optimum mode

This means your computer windows resolution is not display in the correct resolution which your samsung LCD will take.

What you need to do it boot the computer in safe mode. (pressing F8 at start up and select safe mode) This should bring the windows to start up in the generic 800x600 resolution.

Once you are able to see the display in safe mode, go onto the display properties and change the resolution.
* right click on desktop -> properties -> settings

Please rate this if it solves your issue. If you need further assistance please post.

May 29, 2009 | Samsung SyncMaster 913V 19" Flat Panel LCD...

1 Answer

Samsung SyncMaster 913V it's displaying red lines

Sometimes this happens when the pins on the vga connector are bent. You can either try to straighten them (very carefully with tweezers) - be sure to check both ends, or try a new cable.

Apr 06, 2009 | Samsung SyncMaster 913V 19" Flat Panel LCD...

2 Answers

Samsung 913V LCD Monitor--No display when vga plug plugged in

1. please check by pressing num lock or caps lock key to verify that your machine is booting up, if yes then check the cable and if after changing the display cable it doesnt show up anything, it means you have a faulty unit

2. if numlock/caps lock key doesnt work, then your machine is not booting up, please check for loose ram etc.

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1 Answer

Syncmaster 913v color problem

Appears to be something in the connection. Check the video cable and pins on the video connector. Also verify the color settings have not been changed on the monitor. There should be an area where you change the RGB levels.

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New Samsung monitor returns only a blank screen when turned on. what can I do?

I am a technician-informatic. I have repaired about 80 Lcd Samsung monitors with theese problems. I offer the repair manual.
Manual has been done with the experience of the repairing Samsung Lcd monitors. Manual was made by me and shows how to open monitor, how
to solve dark screen problem, how to check and replace capacitors, how to solve the problem non-optimal mode (without reprogramming MCU or
changing the main board) photo are included. 100% functional. The repair process is very simple 30-40min. (does not need a lot of
experience in electronics and expensive instruments) and is not expensive. With this manual you can solve problems by yourself and save

"Not Optimum Mode 1280x1024 60Hz"
- The monitor turns on but turns off by itself, the LED blinks green.
- If you detach from the PC points to "control cable" the picture runs continuously in the vertical direction or presents while line , and
as soon as it is reconnected, the monitor goes off.
- The monitor does not turns on and dont dispaly anything, the LED blinks green-lit, if you detach from pc points to "control cable".
- The monitor turns on, works well some time, but after a window apiers "Not optimum mode. Mode recommended 1280X1024 60Hz"
- The monitor turns on, works well only with low resolution 800x600, when try to change a window that reads "Not optimum mode. Mode
recommended 1280X1024 60Hz"

the manual you can find on ebay (my ebay name is asnerejas123):
Samsung monitor repair manual guide 710n,913v,510n more
Riparazione - repair Lcd Samsung monitor 710n,913v,510n
Reparaturhandbuch für Samsung 710n,913v,510n und andere

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1 Answer

Syncmaster 913v


I am a technician-informatic. I have repaired about 60 Lcd Samsung monitors with thees problems - not optimal resolution mode and dark screen problem. So i decided to made manual how to repair lcd samsung monitors.The repair process is very easy and simple 10-30min. does not need a lot of experience in electronics and expensive instruments.

if you are interested check it.

Samsung monitor repair manual guide 710n,913v,510n more
or just enter number in search field: 220409788372

thank you

Oct 26, 2008 | Samsung SyncMaster 913V 19" Flat Panel LCD...

1 Answer

Monitor syncMaster 913v wont run 1280 1040 Resolution has in past goes blank moving "box- message' says ajust to 1280 1040 resolution Runs on other resolution settings ok

The problem is main board inside monitor which is needed to be changed with new one. So I suggest you to take monitor to the nearest samsung's service center.
Best regards

Jan 08, 2008 | Samsung SyncMaster 913V 19" LCD Monitor

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