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Lv 4
? asked in Consumer ElectronicsTVs · 7 years ago

LCD TV problem?

Hi. I have a 42 " LG LCD TV (42LG7000).

I have no picture and no sound. The TV will switch on and the standby light goes out and leaves a solid blue light as if it's working fine.

The backlight does not come on, nor is there any picture when looking at the screen in a dark room using a torch. When I press the buttons on the side of the TV they beep as if they're working fine but still nothing.

I've tested the power supply and all voltages are reading as they should, to both to the inverter and the main board.

Is there an expert out there who could help me diagnose this further?

2 Answers

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  • Christopher adam
    7 years ago
    Favorite Answer

    as you said you checked the power supply and its good,

    i think the problem is in the logic board.

    but try this one also check the power supply and look if there was a bloated capacitor.

  • Chris L
    Lv 7
    7 years ago

    Did you troubleshoot the obvious things? Make sure the source device is on, checked the cables at both ends to make they are plugged in, make sure the TV is on the correct input, press the TV menu button to see if it appears on screen

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