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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. |
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