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Thread: Will a component explosion always create a burn?

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    Default Will a component explosion always create a burn?

    Let's say I turned a PSU on and there was a pop and a bright white flash of light.

    Shouldn't I be able to see a "burn mark" coming from the source of the light if I were to open the unit up for investigation?

    Let's just say "I'm curious."

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    Pop+light=an arc of current. In an inert atmospher there would be no blackened burn mark, just a tiny creater from the transfer of conductant. Kind of like deplating.
    So yes, with careful inspection something should show. I'm old and would need good light/magnification. Use great care not to wipe away any burn mark. It the Trio acting up already.

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    Most of the time there should be a mark. Might be a little hard to see at times though.

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    If a cap were to blow there'd also be fluff from the electrolytic material. I've blown several caps in my car stereo For a transistor it's easy, just look for the transistor with the body blown open and possibly a leg sticking up at right angles to the other two. Yes, I've blown a few of them up too.
    Last edited by madmat; 10-17-2006 at 07:48 PM.

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    Not a cap. It was a sharp pop. Like when a transformer blows.

    But I can't see any damage.

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    I would look carefully at anything attached to a heatsink... chances are, you'll find the culprit there somewhere.

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    Everything attached to the sinks seem to be in tact... oh wait.. "theoretically."

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    It all depends. If you have a large POP and a flash of light, it could be a lot of things. Depending on whati t aws, it could be a small short, a fuse, transformer, etc.

    When I had a maxtor 200gb give up the magic blue smoke, it went POP, and let off the smoke. Aside from the slight pock marks on the IC and a bit of melted plastic, there was no burned material, no burned pcb, and only a lot of heat was created. Enough to discolor the casing of my Seagate.

    I'd try looking all around the transformer. It might be the PCB side which is why you cant see any damage.
    Then maxtor replaced the drive with a 300gb.

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    Quote Originally Posted by Bbq View Post
    It all depends. If you have a large POP and a flash of light, it could be a lot of things. Depending on whati t aws, it could be a small short, a fuse, transformer, etc.
    A fuse does burn out brightly. Blew a measely 2A one today.

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    Turn it on again. lol

    I've heard pops from flashovers but you should never have a flashover in a PC power supply!

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