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Tivo Series 3 - Bad capacitors in power supply

Discussion in 'TiVo Help Center' started by johnsom, Jul 25, 2011.

  1. amyf

    amyf Member

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    Sep 24, 2014
    Central NJ
    Anyone??
     
  2. genebopp

    genebopp Member

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    3
    Dec 11, 2008
    Instead of diagnosing your board and learning electronics just change the power supply. I assume yours is a life time unit. If the main board is dead, the unit is no good. It doesnt sound like your drive is the issue, so the only other piece you can really change is the power supply. I have a bunch of TivoHD parts, they are cheap. I am selling a board out of a TivoHD on ebay for $30. Cheaper than other people are selling them for just to get this stuff out of my house. It looks a little different than the boards in my other units and your board. But it really came out of a tivohd. Buy my board (or someone elses) try it. If that isnt the problem, put it back on ebay yourself and get your $30 back.

    Power Supply for Tivo HD Series 3 TCD652160 DVR SPWR-00011-000 RevB0 | eBay
     
  3. HerronScott

    HerronScott Well-Known Member

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    420
    Jan 1, 2002
    Staunton, VA
    Amy,

    Sorry that I couldn't really be of more help but troubleshooting power supplies isn't something that I've done much of other than replacing the capacitors on our S3's and it doesn't help that I don't have one free with a power supply that I could check things on for you.

    Were you able to get your issue resolved with a replacement?

    Scott
     
  4. amyf

    amyf Member

    50
    5
    Sep 24, 2014
    Central NJ
    Scott, yes, I picked one up before the suggestion was posted - in fact, I got a working unsubscribed S3 so I now have spare parts. The power supply is a different variant than the one in my original S3, but it works, albeit with a few bulging caps. I'll just replace those and go from there. Thanks for your help.

    Amy
     
  5. HerronScott

    HerronScott Well-Known Member

    5,010
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    Jan 1, 2002
    Staunton, VA
    Glad to hear that you were able to get it back up with the replacement power supply!

    Scott
     
  6. Robert Gluck

    Robert Gluck New Member

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    Sep 16, 2017
     
  7. Robert Gluck

    Robert Gluck New Member

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    Sep 16, 2017
    Scott, where did you buy the caps?
     
  8. jmbach

    jmbach der Neuerer

    1,994
    94
    Jan 1, 2009
    Got mine from Mouser and Digikey


    Sent from my iPad using Tapatalk
     
  9. HerronScott

    HerronScott Well-Known Member

    5,010
    420
    Jan 1, 2002
    Staunton, VA
    Digikey. Maybe I should go back and update that post. :)

    Scott
     
  10. worachj

    worachj Well-Known Member

    1,321
    61
    Oct 13, 2006
    Eagan, MN
    Someone created this project list for mouser.com parts. Not too sure how good it is.
    USE AT YOUR OWN RISK.

    Project: S3 OLED TCD648250B PSU Caps:
    Mouser Electronics
     
  11. Robert Gluck

    Robert Gluck New Member

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    0
    Sep 16, 2017
    Thanks, Scott. I'll check out Digikey.
     
  12. Mike McCarver

    Mike McCarver New Member

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    0
    Oct 16, 2017
    Los Altos
    What are the symptoms of bad power supply capacitors? My Series 3 just won't turn on sometimes, but works fine if I unplug and plug it back in. This am, it wouldn't work, snowy screen this time rather than blank, popping noise every few seconds. uplug, replug did the trick. Could this be the bad capacitor problem? Called TV tech support, waste of time.They said change the power cord. Plus they say I'm out of luck with my lifetime program since it goes with the specific box.
     
  13. worachj

    worachj Well-Known Member

    1,321
    61
    Oct 13, 2006
    Eagan, MN
    Sounds like the power supply to me.

    TiVo Repair and Troubleshooting Guide: Problems and Solutions
     
  14. sfhub

    sfhub Well-Known Member

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    Jan 6, 2007
    Almost any symptom could be produced by bad power supply/capacitors. All the components are only specified to work in certain voltage ranges. If they expect 5V and you start giving them 4.2 Volts, they might fail to work at all, or they might put out bogus data, which then causes further issues, eventually percolating to a point your notice. If you get data corruption on the drive, that can cause other issues.

    I've had systems that wouldn't boot. I've had boot loops. I've had CableCARD issues. I've had waves on analog outputs. I've had HDMI issues. All of them attributed to bad power. When the supply finally really dies then it is easy to see. The thing just won't turn on.
     

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