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Thread: Big PCB, small case, a (too long?) screw and...

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    Exclamation Big PCB, small case, a (too long?) screw and...

    ...a short circuit.

    https://imgur.com/a/0eAgs

    This case appeared in a Brazilian forum, unfortunately I don't have the original link because the thread was deleted, but at least I saved the image links.
    Last edited by Internet; 02-19-2017 at 09:21 PM.

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    That's the usual long screw damage, in this case with a PSU...

    Don't use long screws where the PCB is on the PSU...

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    I wouldn't think there were traces that close to the edge of the PCB. Sure it's dead?

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    Quote Originally Posted by Stefan Payne View Post
    That's the usual long screw damage, in this case with a PSU...

    Don't use long screws where the PCB is on the PSU...
    BTW, he claimed he used the PSU's original screws. But at least one opinion was directed to blame the size of the PCB in relation to the case. Looking to several other PSUs, seems this proximity between the PCB and the screw area isn't uncommon.

    Quote Originally Posted by jonnyGURU View Post
    I wouldn't think there were traces that close to the edge of the PCB. Sure it's dead?
    According to him, yes, it damaged two traces on the PCB.

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    Quote Originally Posted by Internet View Post
    BTW, he claimed he used the PSU's original screws.
    Yes and all the people calling up with PSU not starting, switches off immediately all use the cables that came with the PSU and didn't try to use the cables already in the PC...

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    Ah.. Wow. Guess it would help to know what PSU it was.

    Corsair had a similar problem with the HX Gold. Screw dug into the PCB, but didn't short anything out. Later versions of that PSU just "notched out" the PCB at that section.

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    Quote Originally Posted by jonnyGURU View Post
    Ah.. Wow. Guess it would help to know what PSU it was.
    Scroll down in the Imgur album! It's a Cooler Master G550M.

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    Quote Originally Posted by Orion View Post
    Scroll down in the Imgur album! It's a Cooler Master G550M.
    DOH! Design flaw 101.

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    Quote Originally Posted by jonnyGURU View Post
    Corsair had a similar problem with the HX Gold. Screw dug into the PCB, but didn't short anything out. Later versions of that PSU just "notched out" the PCB at that section.
    Hmmmmm... seems noticeable on sample reviews.

    http://www.jonnyguru.com/modules.php...tory4&reid=299

    https://www.pcper.com/image/view/154...n=node%2F54969

    But it's bizarre CWT forgot about this lately...

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    Quote Originally Posted by Internet View Post
    Never said it wasn't noticeable.

    Quote Originally Posted by Internet View Post
    But it's bizarre CWT forgot about this lately...
    It's often not CWT's job to "remember". They work in a vacuum of PSUs sitting on benches hooked up to load testers. Not PSUs actually mounted in chassis running actual PCs. Therefore, they have to be "reminded" by the other company's engineers. If the other company doesn't have engineers, shit happens.

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