Dell 5555 No Power

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • sanjayajungthapa
    Member
    • Jul 2015
    • 31
    • Nepal

    #1

    Dell 5555 No Power

    dell 5555 no power.
    Connecting AC, In voltage coils gives 5V and 3.3V for about 10 Seconds. And then... There is no voltages at the Coils.
    Tried With Bios... No Progress

Related Topics

Collapse

  • Tynan Dill
    Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?
    by Tynan Dill
    I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.

    Upon bringing it home and plugging it up, it showed a standby light.

    I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.

    The screen seems to blackout and stay black, but with a flashlight I can see the display.

    With my Playstation 4 connected via HDMI, and running a game I can hear sound.

    Assuming...
    11-22-2024, 01:46 PM
  • Mark01
    Dell Optiplex 7490 AIO - red power led after flash
    by Mark01
    Hi guys,

    This is my first post! 🚀
    I have no idea what I’m doing, but I’m learning by trial and error.

    I’m currently working on a Dell Optiplex AIO 7490—one of a bunch of AIOs that mysteriously failed to POST just a few days after the warranty expired. The original issue was that the PC worked fine until it was rebooted, after which it got stuck on a black screen (no backlight), with fans spinning at normal speed and a solid white power LED. Forcing it off by holding the power button would just cause it to switch on automatically and get stuck again on...
    07-04-2025, 12:54 PM
  • seppde
    Dell XPS 9380 No Power - After providing 3VALW and 5VALW once, they persist - still no power-up
    by seppde
    Hello everyone,
    I've recently gotten my hands on a defective XPS13 9380. I will attach a zip of the schematics and boardview.
    My first discovery on the Board was that the reverse current Diode PD103 of the 1st USB-C was blown.
    Nothing to worry about, the board got 3 USB-C ports which support Power/Charging. On I go.
    Next I inspected the power-rails to see why the diode blew up and found a short on the 3V3 rail which I traced back to the Power-IC for the LCD (UZ2). I desoldered it and the very low-ohmic short is gone. I checked on the LCD-connector that there's no short...
    10-01-2024, 10:57 AM
  • SuperJames
    Dell G3 17 3779 Weird power cycling and shutdown/restart issue
    by SuperJames
    This one's a weird one, and still unsolved despite it having gone back to Dell once.

    Specs

    i7-8750H, GTX 1060 Max Q, 500GB SSD & Seagate 7mm 1TB HDD. 17.3 IPS screen. This has the fingerprint reader in the power button.

    Backstory

    I bought this from eBay, from a wallpapering shop. £650 in 2020 which was a good price considering it's a gaming laptop. Physically it's in perfect shape, apart from the hinge mounts on the palmrest failing in the time I've had it (I have a new palmrest for it). The usual thin plastic crap modern build quality!...
    10-23-2023, 04:09 PM
  • rob_hen
    Dell XPS 13 9370 Laptop, No power, not charging
    by rob_hen
    Hello!

    This is my first post for help, and I am quite newer to board repair, so bear with me.

    I have this board here (LA-E671P), with no power, and doesn't charge. No lights come on when plugged in.

    After visual inspection of the board, U22 is obviously blown up. This is the for backlight, and there is no shorts present after removing the chip and replacing.

    There is 3 USB C ports to power this board, USB 1 gives 20V, while 2 and 3 only give 5V.

    My observations using USB 1 at 20V (0.075A draw on Ammeter, slowly drops from 0.136A)...
    05-01-2025, 09:20 PM
  • Loading...
  • No more items.
Working...