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I have a Soyo mtsytpt3227ab flat screen tv. When i turn it on, it has sound but no picture. Tried it in a totally dark room, and no backlight. When checking it out, i noticed that the power board "clicks" once when u turn power on. No bad caps or other visible problems on power board or the inverter board. Is the click normal? Or should i replace the power board? All i have to test with is a multi meter, and dont even know where to begin checking voltage. Help!!!

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  • austin r Mar 15, 2011

    My nxt question is tht, if it is the power board, my p.b. # is a r4041203023. The only power board is a (r4041203025). Is that the correct board? Thx

  • austin r Mar 15, 2011

    My nxt question is tht, if it is the power board, my p.b. # is a r4041203023. The only power board is a (r4041203025). Is that the correct board? Thx

  • austin r Mar 15, 2011

    My nxt question is tht, if it is the power board, my p.b. # is a r4041203023. The only power board is a (r4041203025). Is that the correct board? Thx

  • austin r Mar 15, 2011

    Thx. Will try new power board.

  • austin r Nov 23, 2011

    replaced backlight inverter board, now have a backlight but no video or picture at all. t-con board?


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It seems back light inverter board is defective in said symptoms because you get sound in tv but no picture. Please point strong flash light at tv screen to observe faint image, if image is there then replace back light inverter board that is available with
And if no faint image found then power supply board would be defective and it is available with
Hope these info will help.

Posted on Mar 14, 2011

  • Shahid Electronics
    Shahid Electronics Mar 15, 2011

    Yes, it would be similar/ compatible power board. You may please install new power board.


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