Ticking S3 Power Supply - but only when the motherboard is connected

Discussion in 'TiVo Help Center' started by Jabber, Dec 14, 2018.

  1. Jabber

    Jabber New Member

    12
    0
    Aug 2, 2007

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    Hello,

    I have a S3 that failed due to bad capacitors a year or two ago. I replaced the bulging caps and all was well, until now. A few days ago, I unplugged the S3 to move it, but once it powered down, it won't come back up again, and I can hear the power supply ticking again.

    As far as I can tell, the new caps are good and soldered correctly (and after all, the repair worked for over a year). One thing I can say is that if I use the power supply to power the hard drive only (unplugging the motherboard), it works fine - the drive powers up, and no ticking. I only get the ticking when the motherboard is connected as well.

    Perhaps a short somewhere? Any suggestions on what to try next?

    Thanks.
     
  2. HerronScott

    HerronScott Well-Known Member

    7,554
    1,107
    Jan 1, 2002
    Staunton, VA
    Did you replace all of the caps in the recommended lists or just the ones that were bulging as it's possible for caps to fail without the bulging symptom? When ours failed though, we didn't get the ticking though so it's possible there's some other issue with the power supply unrelated to capacitor failure.

    Scott
     

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