Question about Samsung SIR-T451 DirecTV DTV Receiver

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Reciever won't boot

In the past week the reciever is stcuk on boot mode. I turn on the unit and it is not gooing beyond the boot stage. I turn off and on the unit and even diconnect it from the power for a few days. Nothing chaged. Is there anything I can do?

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  • radiobear Mar 13, 2008

    The receiver wont pass the booting , I did unplug the unit and also hold the power for awhile, with no results

  • Tospa Sep 24, 2008

    I guess that this is a design issue because I have the very same problem with the boot, I try the same power off, hold the power button with no results


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It happen the same thing to my 5-year-old Samsung SIR-T451. I just tried a combination of POWER button and the other three button on the front. What seems to work was the POWER and MENU button at the same time, and I was able to get past the BOOT process and straight into the MENU screen. Once there I re-started the ON-AIR signal acquisition process. It seems to be working fine now. Well see.

Posted on Aug 31, 2009

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If its anything like or reciever try holding the power button for about 6 secconds and see if it does a fresh reboot.

Posted on Mar 25, 2007

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There are about 150 electrolytic capacitors in the thing.
Those are NOTORIOUS for being un-reliable. One of them
probably blew out. Easy to replace, part available for a few cents at
Radio Shack, (OBSERVE PLARITY). Look for Swollen, burst tops,
leaking brown goo, and a stinky smell. Easy fix, I fixed BOTH of
my Samsung tuners with this issue, a T451 and a H260F. T451 PC board has 5 screws, plus 2 on back, plus 2 nuts on RF connectors. Pinch power supply plug to removed, flex flat cable just pulls out. Lift back of board then slide board back to remove. I suspect they used LEAD solder not the newer lead-free as solder is shinny and no RoHS label on PCB.

MOST common cause of dead electronics is electrolytic caps!


Posted on Jul 11, 2012

  • Dat Van
    Dat Van Jul 09, 2016

    I have the same problem. Do you remember which capacitor(s) you have replaced? Thank you in advance for your help!


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