20" Widescreen display has weird lines after any movement of the cursor

Question

there are groups of blue and red elongated dots (sets of 8) staggered horizontally on the screen, a few persistent and some that seem temporary but occur after any activity on the monitor (e.g. drag a folder or screen)
Some go away after a reboot, but reappear with new activity. Can anyone help?

Answer 1

I looked for you I would first go to System Preferences. Click on DIsplay you will see numbers under Resolutions go all they way to the bottom it should say 1680 X 1050 Hi light that on the 20inch Apple Cinema Displays. Next to where Display was is Color click that you flow the expert instructions
You will see only Cinema Display when done it will auto name it Cinema Display Calibrated
Check your DVI cable & GPU as could be loose
Instructions
To fix a stuck pixel
Increase your display resolution setting to the maximum supported by your screen. Launch the JScreenFix applet (below) and position the window over the stuck pixel. After 5 minutes move the window and observe the results. If the pixel remains stuck, repeat. From extensive testing, most stuck pixels are repaired in less than 20 minutes. If a stuck pixel remains after running JScreenFix for 20 minutes it probably can not be fixed by JScreenFix. You might like to try a pixel massage. Sometimes stuck pixels return after a period of time, JScreenFix deluxe can automatically repair reoccurring stuck pixels when you are not using your computer.
To reduce screen burn-in
Disable your screen saver. Launch the JScreenFix applet (below) and enter fullscreen mode. This is achieved by pressing F11 in most browsers, if this fails you will need to consult the documentation for your Internet browser. It is important that JScreenFix fills the screen fully or you may suffer additional unequal burn-in. Leave the applet running for about an hour and observe the results. If you notice an improvement, continue running JScreenFix until the burn-in is more acceptable.
Please note that completely removing screen burn-in is impossible but it will fade with time. The only way to equalise a screen image is to burn-in the parts of the screen that have had less use. JScreenFix deluxe is a preventative measure that monitors screen usage and equalises the screen when you are not using your computer.
Click on the link to launch It made my Apple Display look better
http://www.jscreenfix.com/applet.php?width=1680&height=1050
Screen burn, image retention and recalibrating pixels
Static, non-moving images left on-screen for extended periods of time can leave a "shadow” on , lcd displays (this is true of models from all manufacturers)
You are normally told to avoid extended display of static images. Games consoles can also have a negative effect on panels.
PixelProtector™ will recalibrate pixels uniformly and remove any residual effects that may have occurred.
TV channels that have a static logo permanently on screen have a real negative effect on lcd TV’s and displays. Pixels begin to memorise these images, upon switching channels you will still see the logo in the form of a shadow. After several minutes it will disappear (If not you have burn in). If 99% of the shadow has disappeared you will not notice the 1% that remains. It is the continual build up of the 1%’s that is called residual effect. Not just restricted to TV channel logos. It’s build up over months and even years will lessen the picture quality of you TV. The issues with screen burn and residual effects are far more complex however we have tried to simplify its cause and effect for obvious reasons.
PixelProtector™ can remove burn in and residual effects. It uses a wash tools that switch pixels on and off at a very fast rate (this is not in any way harmful). Included is a white wash for lesser burn in and image fix. In other words it recalibrates the pixels uniformly by removing any memory they may have.
There are different types and levels of burn in. The most severe of which occurs in the first 200 hrs of the panel's life when pixels are at there most excitable. In this time frame pixels can permanently memorise static images that have been left on screen for prolonged periods.
We have many customers who have removed screen burn from their panels by using the removal tool regularly, as per the instructions in the DVD.
In many cases it can be removed after just one session.
If the burn in is not removed first time, it will have been significantly reduced. Don’t forget it is easier to prevent burn in then it is to remove it!
Dead Pixels
Dead Pixels occur when the individual cells burn out or do not energise correctly, PixelProtector™ DVD Edition can help diagnose and in some cases re-energise dead pixels to help you get the very best out of your screen.
Many manufactures believe that 3 drop outs are acceptable. We believe even 1 drop out is unacceptable.
With plasma TV’s a dead pixel will appear black with LCD it may have only lost one wavelength and is only visible when certain colours are on screen. When you buy a new panel it is worth investing in a copy of PixelProtector DVD as some panel may have a drop out from the factory. Your best opportunity to have the panel replaced is when it is new.
User Friendly
PixelProtector™ has been developed with home users in mind. During its development stage one of the main obstacles we had to over come was insuring every one could use it (not just engineers and techno buffs). We tested the DVD on many groups of people whose feedback was invaluable in making PixelProtector™ the best product in the market.
We back up our product with full on-line support and help for all our customers.
PixelProtector™ provides a real user friendly solution to making sure your TV is performing to its full potential and that you are getting the best out of your equipment. It easy to use all you need is a DVD player! So click here https://www.pixelprotector.com/screen-cleaner.php
One of the biggest problems with monitors is most people never calibrate them and just use themstraight out of the box, a lot of people don’t even use their drivers disks. If a disk came with yourmonitor, even if it claims to be plug-and-play, use the hardware setup and install it, it gives you allthe correct refresh rates and color depths and screen resolutions possible. This allows getting themost out of the monitor while preventing damage. Also the hardware setup may create an ICCmonitor profile that Windows or the Mac OS can use with its Color Management System, ICM for Windows and ColorSync for Mac. While generally better than nothing, keep in mind it is a generic ICC profile, it can only assume average ambient conditions that are not likely to be yours
Common issues with LCD screens include:
Trailing or blocking effect on screen (pixilation)
Pixel drop out
Unnatural image blacks are dark grey
How PixelProtector™ can help resolve these issues:
Trailing can bee seen on some panels when bit rate levels are high.
High bit rate levels are normally reached when watching fast action scenes in movies or programs, the image starts to trail or lag and even blocking in some cases.
PixelProtector™ will help to minimize or even eliminate trailing buy calibrating your panel correctly and insuring you have the right settings and connection in place.
Pixel drop outs are one of the most frustrating of issues for anyone who has an LCD. When a screen suffers from pixel drop it can be fixed in some occasions. If the whole pixel is dead then nothing can be done to fix this. If one wave length has gone in the pixel i.e. blue. This can in some cases this can be fixed by recalibrating pixel color production using PixelProtector™.
We have a 4 in 10 chance of fixing the problem.
The DVD will highlight if the whole pixel is dead or if one wave length has gone.
One of the biggest issues LCD’s have is producing pure black. LCD panels produce a pure white light and then subtract the colors that are not required. So to produce black is difficult, making sure that you first calibrate its black and white setting is essential to minimize this issue and get the best from your panel PixelProtector™ includes specific tests and adjustment screens for this purpose.
I know Apple has help me in the past by telling me to make a 100% White pure white screen saver overnight.
I hope I was of help.