Acer Aspire 5742G No power

Hi Guys,

Today we had an all time favorite in the shop. A Acer Aspire 5742G Laptop, with a no power symptom in the description. The cliente told us that the laptop just died from one moment to the another, and then i wouldn’t charge or turn back on, but when you pressed the on/off button there was a half a second light.

Acer Aspire 5742 Backplate
Acer Aspire 5742 -374G32Mnkk Backplate

So we took it apart and looked around for any sign of burned or damaged componentes, and eventually we spotted a what looked to be a burnt ceramic capacitor near the U20, this board is a LA-5891P, and its pretty common in these machines. After testing this little guy with our multi-meter it read “Short”, so we turned on you Hot-Air station and swapped him with another.

LA-5891P Motherboard with a no power issue
LA-5891P Motherboard with a no power issue

Wouldn’t you know it? That was the only problem… We powered it back on and “lo and behold” we were in like Flynn.

Acer aspire 5742 Repaired with a no power issue
Acer aspire 5742 Repaired with a no power issue

It’s refreshing to have an “Easy repair” from time to time, and it just makes me remember that sometimes things are just as they seem. In this case, that ceramic capacitor was slightly discolored, and that is what brought my attention, this wasn’t the first time that i nailed it on a first draft,  and it most certainly won’t be the last.

If it looks to easy to be true, then it probably is… but hey! just give it a try… you might just get lucky.

Thanks for reading.

13 thoughts on “Acer Aspire 5742G No power

    • Fixepedia Post authorReply

      Thanks for the kind Feedback, I appreciate it 😉
      Best regards

    • Fixepedia Post authorReply

      Hi, and thank you for the kind words.
      I will be doing more in the near future 😉
      Best regards

    • Fixepedia Post authorReply

      Hi,
      Thank you for reading, it’s a great feeling knowing that my work is useful to people 🙂
      Best regards

  1. corburterilio Reply

    Fantastic site. Plenty of helpful info here. I?¦m sending it to several friends ans additionally sharing in delicious. And of course, thank you to your effort!

  2. Mahdi Reply

    Hello. I have an acer laptop aspire 5532. The LCD turned it into an LED, but it did not light up any more, and when I turn on the chassis, nothing happens. I checked the charger with multimeter and its voltage was correct. I’ve tested Jack Power, too. I think that the IC has been damaged. But I do not know which IC should be changed !!! Please help me. Thank you very much.

    • Fixepedia Post authorReply

      Hi,
      Does the led light up when charging?
      Have you tried turning it on without the battery? Just using the charger?
      And have you checked to see if you have 3.3V on your on/off button?
      Cheers

  3. Draghici Alin Florian Reply

    hi i have this problem like in ur picture , how i can repair that spot at u20 , it can be fixed if i go in a service with laptop ?

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