Samsung SyncMaster 955 DF 19" CRT Monitor Logo
bob marmelstein Posted on Apr 04, 2006

Out of focus monitor - 955DF

I have a samsung 955DF monitor that is out of focus and the screen is kind of faded out. Is there a way to boost the brightness and contrast beyond the limits of what the onscreen menu can do? I've raised the gamma on my video card but even that's not enough. any suggestions?

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  • Posted on Apr 05, 2006
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Joined: Feb 08, 2006
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Edge-focus is notoriously tricky on flat-screen picture tubes. I have not found anything on adjusting the focus for this model. it seems to be a common problem, though it seems to be more of a sample-defect problem rather than a poor design; a replacement should be OK.

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This kind of symptoms can be correct by the focus adjustment at the flyback transformer. FBT mostly has two control knob (Focus and Screen), focus is usually at the top one like in the sample picture below.

jdvillanueva_86.jpg

Open the back cover of your unit and then locate the FBT. Power on the unit and try to adjust the focus knob.

If the symptoms can't be cured by the this step, this is an indication that the CRT socket is already faulty. You have to replaced this parts and then make some adjustment at the focus knob of the FBT and your unit will back to normal again.

CRT(picture tube) socket

jdvillanueva_87.jpg


Hope I helped you.
Have a nice day!
Thanks for using Fixya.

Jdvillanueva
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Hello there :
Yes you can i have done this on several laptops to troubleshoot the screen all you have to do is to hook up the end that you would normally hook to your computer in the video port on the laptop and plug in the monitor and then turn on the laptop and you will now be able to see the laptops normal screen on the monitor that you just plugged in ok
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Perhaps what is needed is to re-adjust the focus/screen controls. They are located at the FBT. A friendly reminder, standard precautions applying when working with live HV.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.
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