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TiVo HD DVR - No Video Output

Discussion in 'TiVo Series3 HDTV DVRs' started by hankinsohl, Oct 23, 2013.

  1. unitron

    unitron Active Member

    16,389
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    Apr 28, 2006
    semi-coastal NC
    If you live anywhere near Philly, maybe you and omikron could go in halfsies on one.
     
  2. hankinsohl

    hankinsohl New Member

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    Sep 17, 2013
    >> The green light on the front doesn't blink like it was doing to him--I have no idea if that's related by some bizarre reason to its cross-country trip or not.
    Yeah, I wasn't sure if what I was seeing was the "blinking" that indicates a motherboard failure or just normal operation.

    Just before I shipped the unit out, the green light was pulsing very rapidly - 5 or 6 times per second. It's pretty subtle - you need to look at the green light closely to see it. From across the room, the rapid pulsing isn't noticeable.

    However, I also found that the TiVO did not respond to the remote - no yellow lights lit up as the remote was pressed - nor did the "format" button on the front of the unit do anything.

    If the TiVO still doesn't respond to the remote, there's probably additional issues with the unit above and beyond the video output.

    Anyhow, good luck fixing it! It would be nice to see the TiVO come back to life.
     
  3. unitron

    unitron Active Member

    16,389
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    Apr 28, 2006
    semi-coastal NC
    Don't know yet about response or refusal to respond to a remote.

    I fear that without a schematic or at least a block diagram with part numbers of the video output section I'm unlikely to resurrect it, although if I can find a way to use it without having to be able to see the video output I might be able to use it to record stuff and copy it off to PC.

    Provided I could get it through Guided Setup over a PC or smart phone or something, but I don't think there's an ap for that. :rolleyes:

    Anyway, you never told me how, or if, you went about divorcing the internal drive from the previously connected external.
     
  4. squint

    squint New Member

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    Jun 15, 2008
    I don't live anywhere near there but if I do end up getting a decent IR rework station, I wouldn't mind attempting to socket a Roamio processor or whatever it is that needs to be done.
     
  5. unitron

    unitron Active Member

    16,389
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    Apr 28, 2006
    semi-coastal NC
    This thing is two generations behind the Roamio, but I don't have another 658 motherboard to which to move the CPU, which is apparently BGA mounted.

    And starting with the two later S3s, the 652 and 658, the TiVo Service Number, to which the lifetime sub is tied, is in the CPU itself, rather than on the relatively more easily accessed and moved Atmel crypto chip, which was only a 40 or fewer pin flat square Surface Mount Device, and which was used in the S1s, the S2s, and the first S3, the 648.
     
  6. weaknees

    weaknees Active Member

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    May 11, 2001
    Los Angeles
  7. unitron

    unitron Active Member

    16,389
    2
    Apr 28, 2006
    semi-coastal NC
  8. ADent

    ADent Active Member

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    Jan 7, 2000
    Denver, CO
    Cool. My recently purchased used TiVoHD blinked green the other night and I searched and saw a blinking green like could be terminal. Arrrgg. Luckily it was just a software update gone wonky that a reboot fixed.

    The service is pricey ($179.98 at the moment), but a guys gotta make a living.
     
  9. steve614

    steve614 what ru lookin at?

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    May 1, 2006
    Dallas, TX
    I was wondering what the cause is. I doubt weaknees will say -- that would reveal the solution, and undercut their business. :rolleyes:
     
  10. unitron

    unitron Active Member

    16,389
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    Apr 28, 2006
    semi-coastal NC
    If it involves replacing the SMD caps on the motherboard, they aren't going to be getting much DIY competition, 'cause we're talking about a much greater level of difficulty than replacing the simple hole-through power supply caps, and even if you've got someone local that can handle it, they're not going to have any idea which caps need replacing to solve which problem, or if the problem can be solved by a cap replacement, unless they're already in the TiVo repair business, in which case they'd already have the answer to my question.
     
  11. hankinsohl

    hankinsohl New Member

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    Sep 17, 2013
    Weaknees - how fast does the green light blink when a motherboard failure is detected?

    I'm not sure if I ever had a blinking green light or not. In my case the so-called blinking I saw was extremely rapid - 5 times a second or so - and very subtle - unless you held your eyes fairly close to the light, the blinking wasn't obvious at all; from across the room, the green light appeared to be solidly lit.
     
  12. unitron

    unitron Active Member

    16,389
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    Apr 28, 2006
    semi-coastal NC
    I had an email chat with the guy in Australia, and he says video processing is mostly handled by the CPU in the S3 HD-class units, so the totally screwy sync on your 658 likely means the CPU itself is screwed up, regardless of whether there was any actual LED blinking or not.
     
  13. squint

    squint New Member

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    Jun 15, 2008
    Maybe take it to one of those XBox/Playstation reballer places and have them reball the CPU?
     
  14. unitron

    unitron Active Member

    16,389
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    Apr 28, 2006
    semi-coastal NC
    That's an interesting idea, provided the CPU is not the problem and you want to move it to another motherboard, taking the TiVo Service Number, and therefore the lifetime sub, along with it.

    I don't think the HD and HD XL CPUs have had a problem with coming undetatched the way some BGA chips in laptops have, although you've given me some food for thought.
     

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