944,031 Members | Top Members by Rank

Hardware and Software > PC Hardware > Monitors, Displays and Video Cards > Occasional White Streaks (noise bars) in LCD Monitor
Ad:
Permalink
Jun 4th, 2007
0

Occasional White Streaks (noise bars) in LCD Monitor

Expand Post »
Hello forum

I just purchased a new LCD wide screen 24 inch monitor to replace the 19 inch CRT I had. The new wide screen is a Samsung syncmaster 245BW and I have installed the proper drivers for the monitor in Windows XP sp2.

I periodocally see horizontal white streaks (noise bars) starting from the left side of the monitor and traveling towards the right side. It sometimes happens if the monitor is only showing the destop but most often happens when I am watching a full screen video.

It doesn't matter if I am using analogue mode or digital mode.

According to the manual, there is an adjustment called "fine" that is supposed to align the phase of the internal pixel clock to the incoming horizontal sync and it is supposed to get rid of these "noise bars". But when I tweak this adjustment, it doesn't seem to help.

I have several electric/electronic devices located no more than three and a half feet from the monitor such as a UPS, a sub woofer, a USB external hard drive, and a wide screen TV is located about four feet away. Is it possible I am getting interference from one of these devices?

My main question would be, Are white streaks a common problem with LCD flat screen monitors? Is anybody else out there having similar problems? Does anybody have any suggestions?

I didn't have any problems with the old CRT 19 inch monitor I had located in the same spot.

Thanks in advance,
Roy
Last edited by rrssss; Jun 4th, 2007 at 2:29 pm.
Similar Threads
Reputation Points: 16
Solved Threads: 0
Newbie Poster
rrssss is offline Offline
13 posts
since Apr 2005
Permalink
Jun 5th, 2007
0

Re: Occasional White Streaks (noise bars) in LCD Monitor

Do you have an onboard graphics caed or a plug in? If it's an onboard graphics then you should go to the manufactuers' web site and do an update for it.Most LCD monitors don't have that problem, it sounds like a trace peoblem and the update may take care of it.Most noise patterns are verial lines, with your's it sounds as though they are horzonal and that is trace problems.
Reputation Points: 26
Solved Threads: 2
Junior Poster
dewabo is offline Offline
147 posts
since Apr 2007
Permalink
Jun 5th, 2007
0

Re: Occasional White Streaks (noise bars) in LCD Monitor

I made a booboo. Noise is a line though the center of your screen, trace is a line that runs vertially from left to right on your screen.
Reputation Points: 26
Solved Threads: 2
Junior Poster
dewabo is offline Offline
147 posts
since Apr 2007
Permalink
Jun 5th, 2007
0

Re: Occasional White Streaks (noise bars) in LCD Monitor

Thanks Dewabo,


My monitor is now malfunctioning in an additional way. Whenever I open up certain windows such as "my documents", the monitor fluctuates from light to dark along with other distortions (whenever I use certain pre-set modes such as text mode, Internet mode, game mode, etc).

I'm afraid I'm going to have to see about getting it exchanged for another one since I have 30 days to do it from the store I bought it from.

To answer you question, however, I have an AGP video card from ATI, the 800X. The horizontal streaks also appear in Linux (I have a triple boot configuration with Windows and three distributions of Linux installed).

Roy
Last edited by rrssss; Jun 5th, 2007 at 7:34 am. Reason: clarity
Reputation Points: 16
Solved Threads: 0
Newbie Poster
rrssss is offline Offline
13 posts
since Apr 2005
Permalink
Jun 8th, 2007
0

Re: Occasional White Streaks (noise bars) in LCD Monitor

I took my monitor back to Best Buy and exchanged it for an LG Flatron Wide screen. This new monitor works beautifully with no streaks and the viewing angle is wider.

Roy
Reputation Points: 16
Solved Threads: 0
Newbie Poster
rrssss is offline Offline
13 posts
since Apr 2005

This thread is more than three months old

No one has posted to this discussion for at least three months. Please let old threads die and do not reply to them unless you feel you have something new and valuable to contribute that absolutely must be added to make the discussion complete. Otherwise, please start a new thread in this forum instead.
Message:
Previous Thread in Monitors, Displays and Video Cards Forum Timeline: working laptop and working screen but no image..
Next Thread in Monitors, Displays and Video Cards Forum Timeline: Geforce2 MX400 Card -- no signal to display





About Us | Contact Us | Advertise | Acceptable Use Policy
Forum Index | Build Custom RSS Feed


Follow us on Twitter


© 2011 DaniWeb® LLC