Question about Samsung HL-R7178W 71" HDTV

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Samsung TV will turn on and off several times, then stay on.

When I turn on the Samsung LED DLP HL-S5679W and any other HDMI device, the TV will shut off, then go through several on-off sequences before finally staying on. The TV will power on by itself without a problem, but if I try to turn on my HDMI DirectTV, receiver, or DVD, the TV will start powering off and on several times. I can turn on my TV (nothing else) wait a few minutes, then turn on the DirectTV box and the TV will instantly begin the on-off sequence a few times, up to 20+ times (sometimes over 2 minutes). My components will work with another TV, its just this Samsung TV. Can anyone help?

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  • miller-2 Dec 31, 2008

    I have the same problem, but with time warner HD recorder. Anyone have a fix for this?

  • Anonymous Feb 16, 2009

    I'm not sure how to check the power board. The repair tech (useless), did the same troubleshooting steps I did and quoted me $795 for a new motherboard. I also checked component connection, same result, even worse. So any device hooked up with this TV will not let the TV turn on. Need help. Anyone got something?

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  • 98 Answers

First, need to check the power bar(if you use).
then. if don't use power bar, need to check the power board.

Posted on Feb 12, 2009

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Jun 12, 2009 | Televison & Video

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