Battery Connection to Motherboard

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Lord Evermore

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  • #4
    It could possibly be made to work, with a lot of finicky soldering of very tiny wires to replace whatever got ripped out, and lots of trial and error and possibly burning out other things. You can get a replacement motherboard for less money than the time and frustration is worth to even make the attempt. Or just buy a new laptop since that's not an expensive model and you were already trying to fix other problems.
     
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    cerberusTI

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  • #5
    continuum said:
    That looks like a layer of the PCB is peeled away. If it no longer works I'd say you're toast.
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    The traces are torn out, you can see one hanging on the connector. Is that glue on the bottom? That does not look like it was intended to be removed.

    If you can repair it or not depends upon if you are willing to spend more time than it is worth for a maybe or not. The way to do that would be to find where the pcb trace connects (or bend a bit of the surviving trace up and use that, but make sure you get a good electrical connection), and solder a wire between that and the point on the power connector. Use thin wires (or not, but closing it means probably thin and near parallel to the pcb in angle), I see maybe 8 connections you need to find and make.

    That looks like an under $200 device, which is probably not worth any time spent on that for a possibly not great result. You will need a small soldering iron and a steady hand if you try.
     
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    Lord Evermore

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  • #6
    cerberusTI said:
    That looks like an under $200 device, which is probably not worth any time spent on that for a possibly not great result. You will need a small soldering iron and a steady hand if you try.
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    And a motherboard on eBay is $25. Even someone experienced with soldering would have a hard time justifying trying to fix the battery connector and then still having to fix whatever the original problem was that required disassembling it.
     
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    Defenestrar

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  • #7
    Yeah, it was brought to me with some issues following a gymnastics accident. I'm wondering if a loose battery connection was part of it. It should never have peeled up with the little tug I gave the cable.

    I've got a nice precision Weller and have done some very small work before. This was supposed to be an educational experience, but reconnecting to power traces on a MB kicks it back to something they can't help with.
     
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    Lord Evermore

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  • #8
    Defenestrar said:
    Yeah, it was brought to me with some issues following a gymnastics accident. I'm wondering if a loose battery connection was part of it. It should never have peeled up with the little tug I gave the cable.
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    That battery connector was ripped off before it got to you, when somebody did a cartwheel while holding it and it went flying, or more likely landed on it while tumbling. Really had to hit it in just the right spot but it's probably a cheap shell and might have just flexed without breaking. Did it even power on with the cord attached?
     
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    cerberusTI

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  • #9
    Lord Evermore said:
    That battery connector was ripped off before it got to you, when somebody did a cartwheel while holding it and it went flying, or more likely landed on it while tumbling. Really had to hit it in just the right spot but it's probably a cheap shell and might have just flexed without breaking. Did it even power on with the cord attached?
    Click to expand...
    That does seem likely. I almost asked if there was a possibility this was the cause of the issue for which it was being disassembled in the first place.

    If it was shutting off or nonfunctional after physical damage, this is likely the cause. Maybe it landed on the connector, or that was attached to the frame and something applied enough flex or shearing force between components at that point to break the rigid connection (especially if that is glue on the bottom).
     
    Defenestrar

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  • #11
    Polish through the mask (or oxidation layer). An exacto knife can be used to dig up stubborn motherboard traces. I targeted the through holes for two traces that were totally toast. Then I removed a little enamel, tinned, and then connected some magnet wire to use as new leads.

    20240504_223302.jpg
     
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