Question about Samsung HCN4727W 47" Rear Projection Television

3 Answers

Herringbone pattern interference comes and goes. Checked all connections, problem occurs whether on cable or dvd. This was occuring before problem with no picture or sound, just red light blinking for several moments before going out.

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  • BOB BRUNSWICK Jun 29, 2008

    The red light flashes 10 times

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Red led blinking/flashes how much times or just still without blinking after u on the tv let me know now i am waiting for your reply

Posted on Jun 18, 2008

  • hemant somaiya
    hemant somaiya Jun 18, 2008

    I have mentioned the list of no. of flashes and their solution:

    ONE Blink--- not used for the self-diagnosis
    TWO Blinks---B+ over current protection (OCP) , unit goes to the standby
    mode then displays the 2 blink fault. Could be a short in the power supply of
    any of the circuits.
    THREE Blinks---B+ over voltage protection (OVP), unit goes to the standby
    mode then displays the 3 blink fault. This is also a problem in the power
    supply circuit, check T603 and R672.
    FOUR Blinks---No Vert. Deflection (V STOP), Screen goes to a single
    horizontal line then the video signal muted. Check IC1509, Q1505
    FIVE Blinks---AKB circuit (AKB), the timer/standby indicator blinks for about
    30 seconds then goes to the self-diagnosis function. Something is wrong with
    the video. Check video out, Q705, 732, 761 and other components on the C
    board, also check Q218, 219, 220 on the A board. Also unit be in IK blanking,
    try turning up screen slightly.
    SIX Blinks---No Horizontal (H STOP), no raster, goes to the blinking selfdiagnosis
    function immediately. Check C515 & 516 and the jungle IC, IC206.
    SEVEN Blinks---High voltage shutdown. The high voltage has exceeded 33k
    and the unit goes immediately into safety shutdown. Check power supply
    regulation and horizontal circuits.
    EIGHT Blinks---Problem with the audio (AUDIO), unit goes to standby and
    blinks the self-diagnosis code. Check IC406 audio amp, PS401 and 402.
    Intermittent problems ?? This is a great feature. You can also bring up
    these fault codes ON-SCREEN to see a list of the problem numbers with the
    abbreviation of the problem and the number of times this problem has
    occurred. This is slightly different than entering the service mode. To see the
    diagnostic screen, Press the following buttons:
    Display, Channel, 5, Vol Minus, ( Not plus ) then Power. This brings up
    a screen with a list of the problems and number of times they have occurred.
    Each of the problem names is abbreviated as, "OCP", "OVP", "V STOP", ETC.
    We have repeated them in parentheses in the text for the "Blinks" described
    above so you can correlate between the diagnostic screen and the blink
    codes.
    So, now that you know about these self-diagnostics, how do you use them?
    Say that you have a set with a black screen. You see that the LED is blinking
    4 times....This would tell you that you have no vertical and that is why the
    video is muted. If it was blinking 6 times, you would know that you have a
    horizontal fault.
    It's not a sure cure, but it's a little better than a poke in the eye with a sharp
    stick.
    IMPORTANT: after you repair the unit, PLEASE clear the values on this diagnostic screen. These codes do not reset themselves after the fault is 0 corrected, so if you don't clear them, you'll be seeing "old" fault codes the
    next time you enter this screen. Clearing is done by going into the service mode ( display, channel, 5, volume plus, then power ) then press 8 and Enter, which of course returns
    everything to the factory preset condition. Please don't forget to rate or accept the solution

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A pattern interference problems mostly comes from the supply.The solution is to reheat all the supply section,so the performance will come again.Go to a center near your place so the problem stop only reheating or resolder

Posted on Jun 17, 2008

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How many times is the red light blinking as this would indicate the exact problem with the tv

Posted on Jun 17, 2008

  • Benjamin Patri
    Benjamin Patri Jun 29, 2008

    Now is this 10 times steady or is there a pause which could make this 5 blinks, pause, 5 blinks?

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