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Psu query

Discussion in 'Power Supplies' started by JezR, Sep 27, 2018.

  1. JezR

    Associate

    Joined: Sep 19, 2018

    Posts: 7

    Hi I’ve just upgraded and have put in a psu a freind gave me, problem is the hdd wasn’t found in the bios, I then notice the hdd wasn’t powering up so tried in a different pc and still nothing, i then took a hdd that worked from the other pc and connected to mine and same thing happened it wasn’t powering up then re connected it in the pc it had worked and it then didn’t power up

    Can a psu do this?

    Was using the pc like normal just without a hdd connected so I would assume I’ve had a lucky escape and the rest of pc is ok?!
     
  2. pastymuncher

    Man of Honour

    Joined: Jul 12, 2005

    Posts: 16,724

    Location: Aberlour, NE Scotland

    It could be faulty and sending a surge of power to the hdd and killing it. What make and model is it?
     
  3. JezR

    Associate

    Joined: Sep 19, 2018

    Posts: 7

    Thermaltake dps g 750w everything else seemed to work and was playing games on it until I worked out the psu could be the problem.
     
  4. EsaT

    Mobster

    Joined: Jun 6, 2008

    Posts: 4,284

    Location: Finland

    Badly failing PSU can kill all PC parts, including attempting to burn the case.

    But over the spec voltage should start killing also other things than HDDs.
    Unless there's spike just enough to burn some protection components of HDD.
    Though TVS diode should short itself and it would be more like case of blown/burned fuse.
    https://community.wd.com/t/hdd-tvs-diode-faq/14692
     
  5. JezR

    Associate

    Joined: Sep 19, 2018

    Posts: 7

    Everything else seemed to be working apart from the hdd, putting a new psu in later and hdd, fingers crossed!
     
  6. JezR

    Associate

    Joined: Sep 19, 2018

    Posts: 7

    Put a new psu in and a new hdd and works fine hdd found straight away and not getting zapped! Thanks for the help.