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The resolution is dependent on the settings. Did you check and adjust the pot controls? Check the connections from the source to see if any loose wires are in need of tightening? In some case HEAT causes the controls to go out of sync and give you a poor picture. Other than that, contact LG support services for their opinion.
If the lines are colored DIAGONAL lines, they are referred to as "retrace lines," which indicates either that the picture tube bias is set too high, or the brightness level is set too high.. If the blur occurs when the image is particularly bright or a particular color is bright, it is referred to as "blooming." This is caused by either a weak high voltage circuit or because the picture tube bias is set too high.
Is the picture set very bright? Try reducing the brightness control to a level where the retrace lines disappear, and reducing the contrast control below the level where the blooming occurs.
If the television is more than ten years old or has many hours of use, the picture tube may simply be deteriorating normally. By nature, they have a limited life span. Before you decide to throw the set out, if you are technically-inclined, try adjusting the bias and screen drive controls for the television as recommended by the set manufacturer (you didn't specify what make or model the set is), and you may get a few months or years of additional life out of the set.
christian204, Your unit may be 5 -6 years old, and may have developed a problem with it's internal "switch-mode-power-supply" and will need good CCFL backlit lcd monitor tech to repair it. When strange and wierd things start to occur on lcd screens the first place to look would be the SMPS. 12fixlouie
hitachi model 51f510 projection tv has horizontal lines & has greenish tint,do i need to chang the bulbs??i alredy tryd the magic focus button & manual focus,but unsuccesfl,any ideas????
What is the make and model of your television.. green tint and vertical lines indicat a problem with the light engine..although the clear menu says otherwise..im not sure what type tv you have. lcd plasma change the light im guessing you mean bulb .. this indicates to me you have a dlp. but green tint to me indicates a tube projection type tv... so im just guessing hear. vertical lines also indicate a bad buffer board on a plasma or lcd. so let me know what you have
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