One type of television is plasma, which uses a plasma display panel -- a panel with pixels that use plasma cells to operate. Like the televisions that used phosphors in the past, plasma TVs will show vertical lines, or "image retention," on a screen when a static, high-contrast image has been left on the television. To remove these lines, you'll only need a DVD player and a special test pattern DVD that has a white field test included.
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Things you need
- DVD player
- Blank, writable DVD
- RCA cables
Download a test pattern from the Internet and burn it to a writable DVD. Any test pattern you download will have the 100 per cent white field test included. However, test pattern producers may not call this a "white field test." They might call it a "luma test." Free downloads of test patterns are available on the Internet -- try going to such websites as Synthetic Ap or IT Works.
Attach your DVD player to your plasma television if you haven't already done so using RCA cables. RCA cables provide the best connection between a television and a DVD player and ensure the picture quality is the best it can be.
Turn on your television and DVD player, and ensure that your television is in DVD-watching mode. You should be able to do this by using the remote control for the television and selecting the proper input mode from the input menu. If you've never watched a DVD on your television before and are unsure how to set up the DVD player, reference your owner's manual.
Insert into the DVD player the DVD that now has the test pattern on it. Find your plasma television's contrast setting. You should be able to find this setting in the video control section of your television's set-up menu. Increase the television's contrast to its maximum level. A white field pattern should be displayed on your screen. Leave the television, DVD player and DVD on for a day. Within those 24 hours, the lines on the TV should disappear.
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