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Thread: What is "coil whine" and what is that goopy stuff all over the inside of my PSU

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    Quote Originally Posted by Jon Gerow View Post
    You tell me.

    Not going to happen; I'm still a 20W user.

  2. #32
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    Stuff I use comes from 3M and comes in a 5 gallon bucket.

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    How long to use it all up once it is open?

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    Quote Originally Posted by ashiekh View Post
    How long to use it all up once it is open?
    About an hour. LOL

  5. The Following User Says Thank You to Jon Gerow For This Useful Post:

    rgbodosk (06-14-2019)

  6. #35
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    We talking about production in China here?
    Last edited by ashiekh; 06-12-2019 at 11:25 AM.

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    https://gigglehd.com/gg/hard/5054314
    Recently saw an interesting article about whine... any thoughts?

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    Apart from coil whine and caulk, I think a lot of people don't know what's that strange "click" noise that they hear every time they power on or power off the PC. Some think that it's some kind of defect.
    A guy told me that "if you hear that sound then the relay is defective, no relay makes noise" . I had to send him a voice message where I powered on three different PSUs with their relay noise. Of course there are noisier and quieter relays, but that guy was simply crazy.

  9. #38
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    Quote Originally Posted by breixobaloca View Post
    Apart from coil whine and caulk, I think a lot of people don't know what's that strange "click" noise that they hear every time they power on or power off the PC. Some think that it's some kind of defect.
    A guy told me that "if you hear that sound then the relay is defective, no relay makes noise" . I had to send him a voice message where I powered on three different PSUs with their relay noise. Of course there are noisier and quieter relays, but that guy was simply crazy.
    HOLY SHIT!!! What relays don't make noise? LOLOLOL!!!!!

  10. #39
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    Quote Originally Posted by breixobaloca View Post
    A guy told me that "if you hear that sound then the relay is defective, no relay makes noise" . I had to send him a voice message where I powered on three different PSUs with their relay noise. Of course there are noisier and quieter relays.

    What are relays used for in power supplies? all mine are old and have none.

    I once tried to figure out how to make a transistor/relay hybrid, the idea being that the transistor and relay were in parallel, and so the transistor would do the switching so saving the relay contacts but not need a heat sink as the relay would carry the current; then it dawned on me that if the relay failed the transistor would burn out.
    Last edited by ashiekh; 06-18-2019 at 09:57 PM.

  11. #40
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    Quote Originally Posted by Jon Gerow View Post
    HOLY SHIT!!! What relays don't make noise? LOLOLOL!!!!!

    Solid state relays ;-)

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