Samsung HCL4715W 47" Rear Projection Television Logo

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Anonymous Posted on Jul 04, 2008

Samsung HC-P4752W No power

Hello,
The LED comes on and blinks three times. No power, but I can hear the high voltage flyback at startup. I suspect one of the low-voltage supplies. This set has a half dozen low-voltage regulators. I guess I'll have to purchase the service manual. Anyone have a solution?
Thanks,
-Dan

  • 1 more comment 
  • Anonymous Jul 04, 2008

    Thanks for the advice:

    Yes, I have disconnected the covergence yokes. When I do, one of the tube filaments lights up for a few seconds, then goes out and still no power.

    Thanks again!



  • wd401979 Jul 18, 2008

    no power timer led light comes on blinks three times and shuts off you can hear something in back come on

  • Anonymous Oct 11, 2008

    Turns out one covergence IC was blown. Two pairs of 3.9 fusible resistors were open. Replaced both IC's and resistors. Unfortunately, the set suffered a bit of phosphor burn, two 3" lines at the top of the screen. I unplugged all connectors going to the yokes which may have caused the burn. Thanks very much for the help!

    -dan

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Sonny Berry

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  • Samsung Master 8,617 Answers
  • Posted on Jul 04, 2008
Sonny Berry
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Have you tried unplugging the convergence yokes and then try powering up the set? Its not uncommon for that chassis to shut the set down when the ICs are bad.

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