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Hot!Quality of solder around the LCD posters - Z390 Dark

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philld0
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2020/06/26 16:28:49 (permalink)
Hi all :)
 
I trust everyone is well, save and ok?
 
I was wondering if someone might be able to advise me on something.  A very good friend of mine has recently bought me a new in box EVGA Z390 Dark and he's noticed that the solder around one of the LCD posters looks a little, well, poor I guess?  I've attached a picture just to show what I mean :)
 
Is normal??  

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    ty_ger07
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    Re: Quality of solder around the LCD posters - Z390 Dark 2020/06/26 17:01:59 (permalink)
    It looks like someone at the factory had to rework it. If the automated soldering process produces a defect, rather than scrapping everything, a human fixes the mistake. This is called a rework. The person probably does one board every 20 seconds, or something crazy, so the quality is expectedly poor.

    What is your concern? Does it not work?

    Watch this crazy soldering speed:
    http://www.youtube.com/wa...0E8WeEUVM&t=22m35s

    It's not possible to produce quality solder joints at that speed (soldering iron way too hot, flux burns too much or too soon, increased thermal stress, burned crystalized solder, cold solder joints with poor penetration, etcetera), but it works good enough.

    The soldering in your picture indicates that the soldering was done too quickly and didn't have time to melt down and flow evenly; but that's the expected result of budget mass manufacturing.
    post edited by ty_ger07 - 2020/06/26 21:59:26
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    rjohnson11
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    Re: Quality of solder around the LCD posters - Z390 Dark 2020/07/04 08:05:22 (permalink)
    If you feel the quality of the EVGA product is not what you expect please contact EVGA technical support.

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    HeavyHemi
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    Re: Quality of solder around the LCD posters - Z390 Dark 2020/07/07 08:00:42 (permalink)
    ty_ger07
    It looks like someone at the factory had to rework it. If the automated soldering process produces a defect, rather than scrapping everything, a human fixes the mistake. This is called a rework. The person probably does one board every 20 seconds, or something crazy, so the quality is expectedly poor.

    What is your concern? Does it not work?

    Watch this crazy soldering speed:
    http://www.youtube.com/wa...0E8WeEUVM&t=22m35s

    It's not possible to produce quality solder joints at that speed (soldering iron way too hot, flux burns too much or too soon, increased thermal stress, burned crystalized solder, cold solder joints with poor penetration, etcetera), but it works good enough.

    The soldering in your picture indicates that the soldering was done too quickly and didn't have time to melt down and flow evenly; but that's the expected result of budget mass manufacturing.



    The LCD panels are not done by automated process they are done by hand. But yeah...soldering takes a minimum amount of time to do properly.

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