help, monitor has wavy lines

[CanisEstInVia]

My samsung 955DF has wavy lines all up on the screen. It's most prominent after the monitor turns off for power conservation and then turns on. I tried doing the degauss thing (the shaky monitor option ) but it does nothing. Can anyone tell me whats wrong and possibly how to fix it?

 

[Yossarian]

Try turning the monitor 90 degrees on your desk. I'm not kidding.

 

[majewski9]

Dont open your monitor up whatever you do! Those things can hold up to 10000 volts even when unplugged.

I had the same problem but I knew it was my very very old vid card.

 

[CanisEstInVia]

hmm, I tried turning the monitor around. It made the wavy lines move themselves, but theyre still there. odd.

oh, and my video card is a radeon 64mb vivo. I doubt its that though. I just noticed these lines within the past 2 weeks or so.

 

[BIGGDOG]

What Mobo and what is your resolution set at 1024 X 768 ?

 

[CanisEstInVia]

im on an asus a7v133 with a resolution of 1280x 1024.

When I posted about seeing this about 2 weeks ago, I realized this was around when I updated my video card's driver. I reinstalled an older (beta) driver and it appears like the lines are gone? I can see them still after the switchover from power conservation to ON again, but theyre not there during normal use. I guess thats what matters most, but I still wanna know where the problem lies. Do bad drivers do this?

 

[Zorba]

I had this problem once. It was something to do with the monitor, so I am RMAed it. If you can try it on a different computer, if the lines are still there, the monitor is bad.

 

[BIGGDOG]

Are you using a cable extender to extend the monitor's cable??

 

[CanisEstInVia]

<< Are you using a cable extender to extend the monitor's cable?? >>



No, I'm not.

 

[BIGGDOG]

Well.... Ihave exhausted all of my own personal experiances. Sorry I was not musch help.

 

[CanisEstInVia]

thanks for trying!

 

[Fjive]

hey i used to have this problem too...and it was all caused by my old 3d card ( tnt2 ultra )...it has wavy lines sometimes and at times there seems to be an 'earth quake' happening on the screen...hahaha....the card went dead after a few weeks...i guess the time is up for this card...so maybe u should try put in another card ....

 

[Dan]

CanisEstInVia: I started having an intermittent problem with wavy lines on my Samsung 950p after I upgraded to a 500 Watts power supply. I found the going to a different resolution and refresh rate helped. I currently use 1024x768x32 @ 100Hz.

BIGGDOG: I am using an extension cable on my monitor. Can that cause a signal reduction or fluctuation or something?

 

[CanisEstInVia]

hmmm, so dan, were you using the extension cord with your previous power supply? If so, why would upgrading to more power cause this...if you get the chance to try the monitor without the extension, please tell me your results.

 

[BIGGDOG]

"Dan" Yes it can. I bought a Sony Trinitron monitor and I had just bought a GForce 3 TI 500 and I also moved my computer away from me because I wanted some space. Well I started seeing wavy lines and for the life of me could not figure it out. I sent the monitor in for RMA same with the card as per original companies request. "Same thing". A friend of mine "NETOPIA" asked some questions and one of them was "Do you have a monitor extension cable" well yes try to take it off. BAM, now we have Beautiful color and no wavy lines.

This was my experiance and mine only but I did get it fixed.

 

[Dan]

I'm at work right now but when I get home later this morning I'll try without the extension cable and see what sort of results I get. I'll keep you guys posted.

 

[BIGGDOG]

"DAN"

Please do.

 

[flexy]

Powersupply !!!!!!!!


(try another one and post your result if you have a chance !)

 

[Bozz]

What the wavy lines through your monitor is called is 'Moire' and many cheap low quality monitors are affected by it. Just for the record, the design of the Sony Trinitron eliminates moire issues so the person who said this problem happened to his/her Sony monitor is either talking crap or it was an electronic fault or (electro) magnetic interference.

If you want to determine if it definitely is moire then adjust the vertical size. If the lines get bigger/smaller and move all around the screen then it's certaintly moire. Otherwise if the lines do not move then it is some other problem. Like I said before, it usually affects the lowest quality picture tubes that attempt to get a really small dot pitch.

 

[Bozz]

Sorry I just re-read your post and you said the wavy lines were there during the degauss. If they go away after the relay switches the degaussing off then that is perfectly normal operation.

Flexy: Since you suggested to try another power supply, please explain how to 'try' another power supply with this monitor. You seem to know so let the rest of us know.

The problem can also be caused by extention leads for the video card to monitor, although these usually cause a ghosting type effect.

 

[BIGGDOG]

BOZZ... Iam really sorry that we must meet in this manner. The experiance of MINE did happen as I said and further more I really do not take that lightly to it. I stated the fact of what happened to me and me only. So if you would like I can certainly send you all of the equipment so you can see for oyur self of whatever you like. But clearly stating that I am full of crap when sharing my OWN PERSONAL EXPERIANCE is really uncalled for.

But thanks for sharing and being careful not to crap on others who are trying to lend a hand from their own experiance.

Take care and have a nice day.

 

[gdawson6]

Try adjusting the moire options in the on screen menu...seriously.

 

[eno]

I just purchased that monitor a week ago and sent it back today actully. I was disappointed because the stores 955df looked great and for 247$ shipped I thought I got away with a good looking monitor for 247$. Once I recieved it , it had terriable sag in the middle of the screen top and bottom. Like my taskbar was smiling at me. Too bad. Another fella had the same problem on a review on Pricegrabber.com under the 955DF. He too sent his back. I do not know what to tell ya but I heard these are one of the top selling 19" in that class and its weird that there are so many issues with them. I might go to the local store and view it first then buy it, but then again I might just get a different line or brand. Techonweb.com did a great job on customer service and I recommend them. Full refund . Here is a quote from Samsung on my problem I had.

Dear Customer,

What you are experincing is the cut of the glass and there is no adjustment.

Thank you,
Marc H.
Dept. ISTS, Information Services Technical Support
* * Email Samsung Technical Support; techsup@seasvc.samsung.com
* ( Phone; 1-800-SAMSUNG (800-726-7864), Department of Computer Technical Support.
* The best time to call for technical support is between 9:00 AM through 9:00 PM Eastern time Monday through Friday.
* The correct model number is required for proper technical support assistance. Please be sure to correspond with any necessary information during any on-going e-mail support because there may not be an event history saved regarding your concern.


-----Original Message-----
From: eno@....... [mailto:eno@........]
Sent: Friday, February 22, 2002 11:15 PM
To: techsup@seasvc.samsung.com
Subject: Service and Support Email


Date Submitted: 02/22/02 11:15:19 PM
Model Number: 955DF


Message: I just received a 955DF monitor from Techonweb.com(authorized dealer). The reason I went with this monitor was for my second computer that I would use mostly for work. My friends will game on it head to head. I went to a local CompUSA and was looking at the different models and this one stood out big time. The sharpness of this was awesome. Now I found it for 200$ and figured would be a great sharp good looking tube for my second comp. Only thing I did not like about it was the 1280x960 at 75hz. Wish it was 85hz but at that price I would live with it. I also checked the monitor in the store by stretching it almost all the way but leaving a small ring of black around the edges to see the straightness of th! is monitor. Looked great. Almost a complete perfect square. Turns out now that I ordered one and set it up it is not what I saw in the store. This monitor suffers bad from a big dip in the center of the picture. Kinda like if someone was pulling down on the center/bottom of the screen. I had a Sylvania before this monitor that had a certain setting that would fix this. This ones controls would only allow the edges to be adjusted. There is no way to adjust the center so that the center is not bowed down. Basically the vertical lines are higher than the vertical middle lines. What can you do for me. I have owned this for less than 2 hours and this will not be acceptable. I will be making a complete assesment of this monitor for the five hardware review/forum websites that I get reviews from. I will not post anything unless this matter is not taken care of.
# # #

 

[Bozz]

<< BOZZ... Iam really sorry that we must meet in this manner. The experiance of MINE did happen as I said and further more I really do not take that lightly to it. I stated the fact of what happened to me and me only. So if you would like I can certainly send you all of the equipment so you can see for oyur self of whatever you like. But clearly stating that I am full of crap when sharing my OWN PERSONAL EXPERIANCE is really uncalled for.

But thanks for sharing and being careful not to crap on others who are trying to lend a hand from their own experiance.

Take care and have a nice day. >>



Hey I apologise for causing insult, it was not meant to flow across like that. I do believe I misread your post earlier when I made my post. I will quote what I typed:

..............Sony monitor is either talking crap or it was an electronic fault or (electro) magnetic interference

Which it did end up being the cable causing the ghosting lines effect. By nature of design, the Apeture Grille used in the Trinitrons do not suffer from the moire problems that plague low quality, low dot pitch shadow mask picture tubes. You are absolutely right in determining it to be a low grade cable which allows crosstalk between color channels and data channels, I have seen it for myself as well.

Once again I sincerely apologise for offending you and for the bad way I worded the post, I can only assume I was thinking that you may have been saying you had moire problems with a Trinitron. I am honestly not a prick, I, like you enjoy offering advice when some need it. I am a qualified electronics technician with many years of experience and often see blatently silly and obvious mistakes in what people write about particular faults, funnily enough the inexperienced droolers end up having a go at me for offering more accurate advice

Cheers

 

[Bozz]

eno -

What that problem seems to be is the adjustment of the deflection yoke that sits on the neck of the picture tube. There will be at least three rubber wedges that sit between the glass and the coils of wire to hold the yoke firmly in position. What has likely happened (if it were not merely a bad setup at the factory) is that one or more of the wedges has fallen out and the deflection yoke has moved. This would most likely cause some purity errors as well and maybe some convergence errors. Setup a pure RED then BLUE then GREEN screen and see if the colors are either darker or slightly off color in any part of the screen. If so then the deflection yoke has most certainly moved since being installed, or the yoke was just very badly aligned.

Cheers