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Dynabook Toshiba Satellite Pro C50 not charging board

Dynabook Toshiba Satellite Pro C50 not charging board repair – a beginner guide from a beginner

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“Electronics Repair School”

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36 Comments

  1. Don't be so hard on yourself…There was no voltage on the gate, replacing the BQ Chip was the logical thing to do. A third mosfet could throw off anybody. Your still the Master Blaster and a Very Good Teacher I learn a lot from you.

  2. Channel P still outputs voltage if voltage on gate is zero. Because it needs less voltage on gate compare to source so technically zero is still less then source. It only cut down voltage if gate voltage is equal or more then source.

  3. Thank you for this video Sorin, thanks to you I learned a lot and now I know that I can expect up to 3 mosfets in the circuit. Don't think only those who do nothing. Regards

  4. First off I would just like to a bug thanks for all your time and effort you put into making these videos and sharing your knowledge, I've learnt so much more…. Just one thing when it comes to MOSFETs… If the part number ends with an even number then its a channel N and if it ends in an odd number then it's a channel P.

  5. Hi Sorin there is always three mosfet the one was shorted was batery to sys mosfet. You have always 5 mosfets high, low side , bat to sys mosfet , first and second mosfet. But i do not understand mostly bq 24780s is worjing with n channel mosfets and here P channel mosfet.

  6. I had a very similar case like 4 years ago on a Toshiba, had a shorted cap and mosfet. When cap was removed it worked but wouldn't charge battery, until we figured out one mosfet was damaged too.

  7. lesson to learn: check for a third mosfet and maybe a fourth who knows 😂even if the datasheet doesn't show it. But seriously why a third mosfet ?! because we can't say this will help the other mosfets to carry more current because it's not parallel 🤔Great job Sorin🎉

  8. My company bought 10 of these…. in 3 months 6 of them went back for charging issues . Where is the old Toshiba that it was working for 20 years ?
    Also very lucky connecting ssd with battery and charger already connected to power 😊😊

  9. Sorin, no mistakes… Oportunity to learn.
    As you said, you never seen 3 mosfets in the input circuit.
    You are one of the best techs i know.
    We all are getting old, i'm 48 this year, you still have a lot to teach us.
    Greetings from Portugal 🇵🇹

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