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No picture and sound after the power is on? |
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Possible causes: |
1.Check power connection. 2.Misuse the pole. |
Countermeasures: |
1.Check power input. 2.Correct the pole. | |
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Snowy and unclear picture, or noisy sound? |
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Possible causes: |
1.NO antenna connection. 2.Signal input wire open. 3.Poor local signal. 4.Not proper tuning. |
Countermeasures: |
1.Check antenna input, change into outdoor aerial of CATV cable. 2.Change manual tune or perform fine tuning to the proper frequency. | |
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Level rolling picture, shaking of the tuning line? |
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Possible causes: |
1.Input voltage lower than 11V or city voltages lower than AC 200V. 2.Not enough adapter output power consumption. |
Countermeasures: |
1.Adjust the input power DC voltage to the range of 12-15V. 2.Change adapter. of power. | |
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No clear image, shaky picture and multiple figure? |
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Possible causes: |
Poor signal or no proper antenna length & angle, no proper direction of outdoor antenna. |
Countermeasures: |
Change into outdoor aerial and readjust of had better use CATV cable. | |
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Black & white picture, strong contrast? |
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Possible causes: |
Color saturation, contrast and brightness not proper. |
Countermeasures: |
Readjust. | |
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Interference with net shape? |
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Possible causes: |
Interference from outside: Cars/Motorcycles, radiophone, electric welding. |
Countermeasures: |
Improve the receiving condition. | |
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Bright and blank screen No image display? |
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Possible causes: |
Low input voltage of the external power supply; Low power consumption to cause the machine working not properly. |
Countermeasures: |
Check the extermal power if suit for the requirement for the unit. | |