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TV Manta LED 2402 - No Picture, Red to Green Diode, No Sound or Image - Troubleshooting

kojotbb 8544 8
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Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
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  • #1 16839842
    kojotbb
    Level 10  
    Hello, I would like to ask for help. I have a TV Manta LED 2402, unfortunately he sat down. The red diode is lit, after starting it turns green and that is all, no voice, no image - what could have happened? Best regards.
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  • #2 16839966
    DejoDejo
    Level 21  
    "The power indicator will change from red to green
    when the receiver switches from standby mode to work mode,
    however, the screen will not start displaying after a few seconds
    seconds. This is normal. "

    Do you have it connected to anything?
  • #3 16840280
    kojotbb
    Level 10  
    Connected to the antenna but winter doesn't even have a menu
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  • #4 16840679
    DejoDejo
    Level 21  
    Disconnect this antenna and change the buttons to TV (source) input, e.g. HDMI or VGA. You can also check if the sound is on the headphones.
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  • #5 16846180
    kojotbb
    Level 10  
    I came back, so the sound is there, there is no vision and the input changes will not help, just something was wrong, I thought that someone had a manta with such symptoms, the matrix is ok. The problem is the lack of a diagram and I do not know what tensions to look for. Best regards.
  • #6 16846590
    miecho18
    IT specialist  
    Maybe there is no backlight?
    kojotbb wrote:
    matrix is ok

    Where do you get that confidence?
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  • #7 16852542
    kojotbb
    Level 10  
    There is no suitable voltage for this, the driver does not start. The backlight fully works on an external power supply and you still can't see anything. At the very beginning something gaping the driver gets only 12 v and the same spends on the illumination bar and the bar only starts at a minimum of 32v. no power to the driver and the rest also do not rush.

    Added after 6 [hours] 46 [minutes]:

    https://obrazki.elektroda.pl/7121171500_1511817258.jpg
  • #8 16860626
    kojotbb
    Level 10  
    It is a pity that you give up and no one has good ideas, it remains to delete him after someone such a piece of furniture. Best regards.
  • #9 16871967
    kassans
    Level 32  
    Measurement of power supply voltages, the model of the TV motherboard you have in the picture, type in google and look.
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Topic summary

The discussion revolves around troubleshooting a Manta LED 2402 TV that exhibits no picture or sound, with the power indicator changing from red to green. Initial suggestions include checking connections and switching input sources. The user later confirms sound is present but still no image, indicating potential issues with the TV's driver and backlight. Further analysis reveals insufficient voltage to the driver, which is necessary for the backlight to function. The user expresses frustration over the lack of solutions and considers discarding the TV. Recommendations include measuring power supply voltages and researching the TV motherboard model for more insights.
Summary generated by the language model.
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