Tohiba led tv has sound, back lights and blue screen but no picture or menu. Replaced main board but problem remains. Voltages on power supply board seem ok.
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one of the video/audio cords not plugged in?
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T-con board failure check the 24 v return coming from power supply to main logic board l(HDMI and cable hook up board )not the 24 v feeding the backlighting since it has sound there's a better chance its not the main logic
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