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Thread: ATX PSU Hack question

  1. #1
    Newbie
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    ATX PSU Hack question

    How can i drain the remaining voltage in the caps so i can be sure the supply is dead? I'm going to remove the 2 filter caps & short the inductors but i want make sure there's no voltage left in it. 125v caps might sting! I was just out testing my setup with a 400w inverter & ground loop isolator on line out... it works great except a very faint buzzing when cpu is on. When the cpu is off and the inverter is still on i get very noticable buzzing if i leave my head unit on aux.

  2. #2
    Maximum Bitrate
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    You could short the terminals on them. That would do the trick.

  3. #3
    FLAC
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    Re: ATX PSU Hack question

    someone PLEASE correct me if I am wrong for this guys sake, but the caps u are removing dont hold a charge......

    when I did the hack for my system I was running the PSU all of 1/2 ago, and didnt do any sort of discharge process.....
    Project - GAME OVER :(

  4. #4
    FLAC
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    You can get hurt really bad or worse if you aren't careful..
    aka Kumaneko
    "Don't make me moderate your ***!"
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    mp3car system is currently FUBAR and finances do not allow for a correction of that situation
    Real computer hackers use a rotary cutting tool on their motherboard.

  5. #5
    Variable Bitrate
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    Originally posted by SuperMatty
    You could short the terminals on them. That would do the trick.
    AAAAHHHHHH...
    no, you need to short the terminals with a big-*** 10W resistor. and live it on several minutes.
    shorting it with wires may either
    • blow the capacitor
    • melt the wire to the cap

  6. #6
    Banned
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    Originally posted by sxpert


    AAAAHHHHHH...
    no, you need to short the terminals with a big-*** 10W resistor. and live it on several minutes.
    shorting it with wires may either
    • blow the capacitor
    • melt the wire to the cap
    Just short it with a wire, you won't blow the cap, and who cares if you melt the wire onto the contact, you are removing it anyway.. :P aren't you??
    2 week temp ban (spam and complaining about deleted posts)
    register another account and you're gone for good.

  7. #7
    Variable Bitrate
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    Originally posted by THEMP3KID


    Just short it with a wire, you won't blow the cap, and who cares if you melt the wire onto the contact, you are removing it anyway.. :P aren't you??
    Hehe I wouldn't really recommend it on anything big! I haven't really done alot of work with caps, but I did find a site on the internet which showed what happened to someone after they were playing with a 1 farad cap and kinda went wrong - not a pretty sight!

    But, I hate to agree with mp3kid on this one, but he is prob. right! If you are removing the right caps (possibly not??) then they shouldn't kill you, and prob. won't melt. Otherwise, just grab a resistor or get a gullable sibling / relative to do it for you

    The easy way to tell is to try it but get someone else to stand by with a phone

    Cheers - good luck!

    Andrew
    Mediabox Hardware Project
    Current Stage: A complete redesign, although not much happening right now!

    Mediabox Software Project
    Status: Writing Sync Software (still) and playing around with interface
    To do: Far too much!

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