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Issues Related to Screen (Color)
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Screen has poor Color resolution (16 Colors).
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Use PC settings to set the Color to 24 bits (True Color) or above.
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Screen Color is unstable or mono-Colored.
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Check the connection status of the signal cable. Or, re-insert the PC graphics card.
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Black spots or bright spots appear on the screen.
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Some pixels (red, green, blue, black) are visible on the screen due to the unique characteristics of the display panel.
This is not a malfunction of the product.
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The screen’s brightness seems dark.
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Adjust brightness and contrast again.
Issues Related to Sound
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There is no sound output.
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Adjust the volume of the product or external device.
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See if the sound is set properly.
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Sound is too low.
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Adjust the volume of the product or external device.
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For some models, you will need to purchase external speakers separately since they do not have speakers built-in.