Dell n5050 no power light

By jlrka
Dec 25, 2015
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  1. Inspiron N5050. There is no power light on. The ribbon cables for the pwr sw, tpad & kbrd are disconnected.
    The end of the adapter reads 19.94v at the inner wall and 2.4v at the center pin. With the
    7 pin connector disconnected from the mobo I get 19.94v at all 3 reds and 2.4 at the blue.
    When I plug the connector into the mobo and check at the pins soldered to the mobo I get 19.94
    at all 3 red and .35 at the center(blue).
    Is this how it should be or is there a problem somewhere?
    I had this problem about 2 months ago and just set it aside. When I finally got back to it today
    It had the pwr light and started up. Ran it for an hour and shut it down. Came back 2 hours later and no pwr again.
  2. Tmagic650

    Tmagic650 TS Ambassador Posts: 17,244   +234

    The power supply may need to be replaced...
  3. jlrka

    jlrka TS Rookie Topic Starter

    Why do you say that? Are those readings incorrect?
  4. Tmagic650

    Tmagic650 TS Ambassador Posts: 17,244   +234

    Yes they are low... Please note, this could be a motherboard fault, but the power supply would be cheaper to try first

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