The Power Cable Hack

Discussion in 'HP Slate' started by TheWerewolf, Jan 29, 2011.

  1. TheWerewolf

    TheWerewolf Care for a bite?

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    And since I'm the kind of person who hates having loose ends...

    I took the power supply outside (it's -22C here) and let it get nice and cold, then hit it with a hammer, which basically shattered the shell.

    So, I can now confirm *visually* that the three ground wires all go to the same place on the power supply and are all soldered together, and the three 19V lines all go to the same (different) place and are also all soldered together.

    And that as they say, is that.

    There is, of course, a risk someone will connect it to a power source at more than 19V, or has reversed polarity (not that big a risk these days since positive center pin has become pretty much the standard - but still possible), or is unregulated and so sends spikes.

    Again, if you have any concerns or doubts, don't do this project.
     
  2. purplepeopledesign

    purplepeopledesign Scribbler - Standard Member

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    I find it hard to believe the design team for consumer electronics would omit onboard power regulation, especially if the device has to pass international safety codes.

    :)ensen.
     
  3. Steve S

    Steve S Pen Pro - Senior Member Super Moderator

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    <<...that as they say, is that...>>

    ...I agree. Case closed...
     
  4. gotapex

    gotapex Pen Pal - Newbie

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    hello,... thank you for the great diy write up.

    i do have a stupid question. do you know if the length with which i cut matters here? does it have to be 6 inches long (i.e. was there a reason you cut it at 6 inches?) or can i cut a much longer piece so that i have some room to move around with it?

    thank you.
     
  5. TheWerewolf

    TheWerewolf Care for a bite?

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    Not a stupid question at all.

    I chose about 6" because this will be attached to other things like a power supply or the external battery by way of another cable. Making this long would make the joined cables even longer.

    Also a 6" piece is easy to keep in a case with the slate, making sure it's always available.

    But you can make it almost any length, really. Whatever works best for you.
     
  6. rockface

    rockface Scribbler - Standard Member

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    Your sacrifice is much apprshated! :D
     
  7. TheWerewolf

    TheWerewolf Care for a bite?

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    Thanks. :)
     
  8. gotapex

    gotapex Pen Pal - Newbie

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    thanks for answering my question and again, for setting up this diy.

    i'm going to give it a go in the next week!

    not being able to swap batteries on my frequent and long flights out to japan and korea worried me until i saw this forum, and this thread!
     
  9. DrJosephKim

    DrJosephKim Mobile Health Specialist

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    I can't wait to try this myself. I just hope that I don't fry my Slate.
     
  10. DrJosephKim

    DrJosephKim Mobile Health Specialist

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    Quick question about the part used: is the 2.5mm the internal diameter? If so, what is the outer diameter of the barrel socket? Thanks.
     
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