Samsung Model HP-R4272V/XXA 42in Plasma screen flickers

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  • high-tech
    replied
    Re: Samsung Model HP-R4272V/XXA 42in Plasma screen flickers

    The VS pins on the SUS boards each connector has a black wire and a bunch of white wires and the black wire on both connectors is the VS pin, I'm double checkin now

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  • tom66
    replied
    Re: Samsung Model HP-R4272V/XXA 42in Plasma screen flickers

    Vs should be the same for both boards, not different. Where are you measuring Vs on each?

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  • high-tech
    replied
    Re: Samsung Model HP-R4272V/XXA 42in Plasma screen flickers

    If I'm seeing this right that big of a voltage drop on the YSUS board would lead me to think I got problems on the YSUS board. What you think TOM66?

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  • high-tech
    replied
    Re: Samsung Model HP-R4272V/XXA 42in Plasma screen flickers

    coming off the sub power board to each sustain board the voltages are higher, VS going to the ysus board is 265v to 360v and VS going to xsus board is 209v to 215
    Last edited by high-tech; 08-24-2013, 11:41 AM.

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  • high-tech
    replied
    Re: Samsung Model HP-R4272V/XXA 42in Plasma screen flickers

    Originally posted by tom66
    Check the Vset and Vs voltages on the sub-PSU board, which connects to the main PSU board.
    I got 215v on the VS pins and 75v on VA pins. they both jump around a few volts while the screen cycles on and off

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  • tom66
    replied
    Re: Samsung Model HP-R4272V/XXA 42in Plasma screen flickers

    Vset is on the small second power supply (one of them?), there should be a point to test it. Do the Vs and Va match the rated voltage written on the panel sticker? (on the metal chassis)
    Last edited by tom66; 08-24-2013, 11:34 AM.

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  • high-tech
    replied
    Re: Samsung Model HP-R4272V/XXA 42in Plasma screen flickers

    VS is 212v to 215v and VA is 72v to 75v these voltages jump around as the screen goes on and off. I can't find a vset to test

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  • high-tech
    replied
    Re: Samsung Model HP-R4272V/XXA 42in Plasma screen flickers

    Thank you, I will do that and post my results

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  • tom66
    replied
    Re: Samsung Model HP-R4272V/XXA 42in Plasma screen flickers

    Check the Vset and Vs voltages on the sub-PSU board, which connects to the main PSU board.

    Leave a comment:


  • high-tech
    replied
    Re: Samsung Model HP-R4272V/XXA 42in Plasma screen flickers

    [youtube]8OBIuRy_EXE[/youtube]
    Last edited by high-tech; 08-24-2013, 10:56 AM.

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  • Samsung Model HP-R4272V/XXA 42in Plasma screen flickers

    Hello and good morning everybody!

    I don't have much knowledge or exp w plasma TVs.

    I uploaded to youtube a little video showing what this tv does and has no sound but the screen goes on and off with weird picture, just a bunch of stripes and random lines ect


    http://youtu.be/8OBIuRy_EXE


    Any help would be a blessing, Thanks
    Attached Files

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