HP Pavillion 15 power failure

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • Bektronics
    Member
    • Apr 2018
    • 11
    • Belgium
    #1

    HP Pavillion 15 power failure

    Best friends.
    I own a laptop HP Pavillion 15-P290nb.
    The dc input jack was defective and I replaced it with a new one (ref: DC in cable 65 / 90W Hp p / n 730932-yd1 REv: x2)
    After plugging in the power supply, the laptop was still dead.
    I would like to have a schematic of the motherboard type DAY16EMB8C0 Rev-C.
    I measure voltage (19.5Vdc) at the connector but nothing else.
    Is there a fuse somewhere on the motherboard that could be faulty?
    Please send your reaction.
    Regards
    Bektronics
    Attached Files
    Tags: None
    Previous template Next

    Related Topics

    Collapse
    • npielawski
      MacBook Pro late 2016 (820-00239) with multiple failure modes.
      by npielawski
      I will just preface all this by saying that I have a fairly technical background but have never attempted SMD electronics diagnostics and repair before, I really like the idea and want to learn.

      I have a MacBook Pro late 2016 that died maybe four years ago. Over the course of 30 seconds, it got slower and stuttered, until it froze for a second and died. No click from the trackpad anymore, nothing. I started getting interested in electronics repair and decided to give it a shot, so I opened it, removed the battery (one cell was puffy), took out the motherboard and experimented with...
      10-15-2025, 01:53 AM
    • puccovelli
      Dell 9310 Memory or RAM (Random-Access Memory) failure (2,4)
      by puccovelli
      Hi all, I hope this is the right place to post.

      I'm having a problem with a Dell 9310 which is posting 2 orange, 4 white lights on startup (hangs on Dell BIOS logo). The service manual says its a RAM failure.

      I've taken the motherboard out and noticed that one of what looks like an SMA 0805 resistor has blown (see photo). The board is an LA-J144P Rev 2.0(A01).

      1] Could someone confirm what the component that has blow actually is (and where I could get another from).
      2] Whether this component is likely to cause the RAM failure issue, and if replacing...
      10-11-2025, 06:30 AM
    • Sus256
      HISENSE 65E7KQ PRO - no boot
      by Sus256
      Hi all!

      HISENSE 65E7KQ PRO
      RSAG7.820.13512 - chassis
      MT9618BAATAB - cpu
      RSAG7.820.12059 - power
      HD650Y3U77 - panel
      KLM8G1GETF - emmc

      The TV does not turn on, the standby indicator is on. All voltages are present.
      Emms is dead. Not readable, not detected.
      Replaced emmc.
      But with another dump there is no launch

      Terminal log

      UART
      <
      AC_ON
      RPMB key is not yet programmed

      HASH1_VERSION=0x00000000 64bit
      E-B
      FDE enabled
      layout pattern onebin by SAR7,0...
      06-01-2025, 02:11 AM
    • howardc64
      TCL 55S425 few horizontal lines, potential failure on both side of panel/buffer board
      by howardc64
      All left and right refers to looking from rear of TV (or looking from front with TV upside down)
      • TV came with vertical bars and no image. Found faulty TVS on left buffer board. Also replaced T-Con (may have damaged the original while hot air removing components, board has slight warp) and have full image but few horizontal lines on the screen. Some of the lines appears to be 2 pixel tall while others are 1 pixel tall.
      • Disconnecting left and right buffer board potentially reveals problems on both sides with different signals (unless this T-Con require jumper like Samsung FB_TRDY1&3) Fault
      ...
      07-24-2025, 05:17 PM
    • ctroxtell
      Carrier HK50AA063 display controller common failure help
      by ctroxtell
      I've got a control display for a Carrier chiller that I'm trying to understand what the common failure with these boards are. This is the board in question https://www.supplyhouse.com/Carrier-...arquee-Display all of them seem to develop a failure with the up and down arrow buttons on the right side of the display, the esc and enter keys I've never seen fail. Once these boards are plugged in they run 24/7, you used to have to press extremely hard with the end of the blunt screwdriver and you could still get the arrows to work but now it has completely stopped working. The button...
      02-05-2025, 05:31 PM
    • Loading...
    • No more items.
    Working...