The board will need to be checked and if faulty, replaced. A faulty video drive chip can cause either a red, green or blue (RGB) issue. – In other types of TV’s, the video drive chip may be faulty. A loose ribbon cable can also cause the green screen on an LCD HDTV. Oxidation and dirt can accumulate and cause the connection to become dirty.
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The inside of the TV can collect dust and gunk up the connections and the ribbon cable that goes to the video board may need to be disconnected and cleaned. There is most likely a loose or dirty ribbon cable inside the TV. – If you have an LCD HDTV and the screen is green: Also check to see if the internal speaker may be out of place or blown as this can cause the green screen to appear on projection TV’s. Be sure there are no external speakers near the screen. A projection TV can also turn green from any type of magnetic interference. – If the “green screen” is showing on a Projection TV, then the RED picture tube is faulty and needs replaced. Replace the tube in the older TV if found to be bad. – If the green screen is on an older CRT or tube TV, the tube or tubes may be faulty and causing the green screen. Move the external speaker away from the screen and the green screen should disappear. If an external surround sound speaker is close to the CRT TV screen, it may turn green. – You may also have an external speaker too close to your CRT TV screen. If a magnet comes to close to certain types of TV screens, the magnet will make the TV picture green. A blown or loose internal TV speaker can cause a TV screen to turn green. If you have an older TUBE TV or CRT, then most likely you have a type of magnetic interference, possibly from the speakers that cause the screen to turn green.
– Depending on the TV type you have, whether a TUBE TV, Projection TV, Plasma TV, LCD HDTV, it could be a multitude of reasons. If you suspect any cable to be bad or damaged, replace it with a brand new same type of cable. Wiggle all cables while the TV is ON and see if the picture changes. Check all cables (HDMI – COAX – RGB – COMPONENT) from the TV to the components you have connected to it. Many times the cable will be connected into the TV or media device, however the cable that transfers the video signal is damaged internally and needs to be replaced. HINT: The most common reason for a Green Screen on a TV is a loose or damaged cable connection of a media component to or from the TV.Ĭheck to be sure the cables that carry the video signal to your TV from your SAT box, CABLE box, DVD player, ROKU player, etc are secure and not damaged.