Lesson learned re: component video

Discussion in 'TiVo Help Center' started by dlfl, May 4, 2011.

  1. dlfl

    dlfl Cranky old novice

    8,883
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    Jul 6, 2006
    Dayton OH
    I am using the component video outputs of my TiVo HD. Today, immediately after starting playback of a recorded program the screen went blank and the TV put up its "no signal" message. (This message does not come from the TiVo.) The TiVo was downloading a webcast (blue light) at the time and since I've just started using the webcast feature I thought maybe the problem might have been a bug related to that. Nothing I did with the remote control could bring video back. Finally after rebooting the TiVo twice and switching to HDMI video (which I normally don't use because I think it causes lock ups of the TiVo occasionally), I got video back and was able to switch back to the component feed.

    Then later tonight it happened again and this time I could get video back by power-cycling the TV. But it would happen again after just a few seconds of video. I had been suspecting the component video output circuitry of the TiVo was intermittent but this is inconsistent with being able to recover video by just turning the TV off/on (since the TiVo has no way of even knowing whether the TV is on or off when using component video). The TV's no-signal message includes the advice to "check cable connections", which I of course had been ignoring. :eek: After all, how could all three video cables become disconnected simultaneously (and the two audio cables also, since the sound was going off too)? But, lacking anything else to try, I started jiggling the RGB component cables going into the TV and vwah-lah! the green cable was apparently making poor connection -- because reseating the green cable (only!) was what cured it.

    There is a simple explanation for this, which I finally realized: The H and V synch signals are superimposed with the green video signal and if the synchs are missing, there is no video at all.

    So the lesson is: occasionally the stupid user interface messages actually relate to the problem!
     
  2. SNJpage1

    SNJpage1 Well-Known Member TCF Club

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    May 25, 2006
    Atlantic...
    Some times we tend to over think a problem and skip what is the simplest fix.
     
  3. steve614

    steve614 what ru lookin at?

    10,722
    0
    May 1, 2006
    Dallas, TX
    Sort of off topic...

    Just the other day, I couldn't see my PC on my Tivo's NPL. I go to Music & Photos, it's not there either (doing that in the past had usually worked in getting reconnected).
    So I spend a few minutes trying different things on the Tivo, and suddenly realized that a reboot of the PC would have been faster. :eek:
    Reboot PC and two minutes later, my PC is now back in my NPL.
     
  4. SNJpage1

    SNJpage1 Well-Known Member TCF Club

    4,519
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    May 25, 2006
    Atlantic...
    Seems like most electrnic stuff can use a turn off/turn back on every so often to clean out the cobwebs.
     
  5. dlfl

    dlfl Cranky old novice

    8,883
    702
    Jul 6, 2006
    Dayton OH
    If only a TiVo could reboot as fast as a PC! Remember when we used to complain about Windows boot times? TiVo makes Windows seem fast.
     

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