Sanyo FW42D25T

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  • dskall
    replied
    Re: Sanyo FW42D25T

    You have 12v marked on board at lvds connector. Need to trace back and find missing 12v

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  • Jsikora
    replied
    Re: Sanyo FW42D25T

    Those are the voltages of the transistors UL1 and UL2 next to the plug for the LVDS cable.

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  • dskall
    replied
    Re: Sanyo FW42D25T

    T-con voltage probably originates off of main board through transistor

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  • Jsikora
    replied
    Re: Sanyo FW42D25T

    UL1
    5.21V
    3.303V
    0V
    3.303V

    UL2
    5.21V
    1.814v
    0v
    1.814v

    T-Con fuse .223V

    Leave a comment:


  • attainteddragon
    replied
    Re: Sanyo FW42D25T

    you should have 12v on the t-con fuse, but the lvds, d/pairs are only low voltage and you really need a scope to see the signal.

    if you do not have 12v on the t-con fuse, disconnect the t-con and see if the 12v comes up.
    Last edited by attainteddragon; 10-04-2017, 04:06 AM.

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  • dick_barton
    replied
    Re: Sanyo FW42D25T

    Have you checked the two regulators UL2 and the one below it.

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  • Jsikora
    replied
    Re: Sanyo FW42D25T

    So I am trying to figure out why I would be getting no 5V or 12V or anything close to that coming from the PS/Main to LVDS output.

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  • Jsikora
    replied
    Re: Sanyo FW42D25T

    T-con fuse is good. My problem is that I am not getting any voltage other than low coming off of the main board to the LVDS cable except low voltage. I tried the PS/Main on another identical TV with same panel that has a bad board and it does light the screen.

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  • dskall
    replied
    Re: Sanyo FW42D25T

    What are you getting at your t-con fuse?

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  • Jsikora
    started a topic Sanyo FW42D25T

    Sanyo FW42D25T

    Hi all, working on a Sanyo that powers up and has backlights but no picture. I checked voltages from LVDS cable and I am getting the low voltage 1-1.4V, but no higher voltage. I'm assuming that is why I'm not getting a picture. Also I am getting the proper voltage on the main cap. Any help would be appreciated. Thanks.
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