request for hp tpn-q179

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • rookie_badcaps
    Member
    • May 2015
    • 12
    • philippines

    #1

    request for hp tpn-q179

    requesting for hp tpn-q179
    boardview or schematic,
    missing 3volts in power supply and 3volts power rail....
    thanks in advance

    board code is DA0x32mbAG0 rev:G
  • AL._.EX
    Badcaps Veteran
    • Dec 2022
    • 847
    • Belarus

    #2
    Re: request for hp tpn-q179

    https://www.badcaps.net/forum/showth...ht=DA0x32mbAG0

    Comment

    Related Topics

    Collapse

    • Nagy Daniel
      Lowest possible resistance on laptop motherboard rail - Guide Table request
      by Nagy Daniel
      Hi, I'm Daniel, and I'm new to the world of repairing motherboards.

      I would like to create a table, or more likely a guideline about the voltage rails and their possible resistance rail.

      I know that the motherboard design has a very big depend on the rail's resistance, but I would like to know what is the smallest value for a rail that can be acceptable. For example, I heard that some new gaming motherboards can have 0,5 Ohm resistance on the GPU rail, but on an older type, it could be a sign of a shorted GPU rail.

      So, I generated a table with AI so I can...
      03-04-2025, 08:24 AM
    • Victor Moreira Silva
      Acer Nitro 5 LA-L181p power LED turns on by 5 secs (Short on PCH rail?)
      by Victor Moreira Silva
      Hello everyone,

      I'm trying to repair my old Acer Nitro 5 (AN517-54-55T5). I've already bought a new laptop, so this is more of a learning project. For the experience, with no high expectations of success.

      Well, my decice specs are the following:

      Model: Acer Nitro 5 AN517-54-55T5
      CPU: Intel Core i5-11400H
      GPU: NVIDIA GeForce GTX 1650
      Motherboard: GH51G LA-L181P Rev:1c

      The symptom:
      When pressing the power button, the power LED lights up for about 5 seconds and then turns off. Initially, the issue was intermittent: sometimes...
      05-26-2025, 10:49 AM
    • lefetylorant
      Lenovo Thinkcentre tiny M90Q gen 1 - no 12V rail
      by lefetylorant
      Hello Everyone,

      Long story short, I got this unit for very cheap.
      I've started to experiment with it's BIOS, as I did before successfully with an M900. However my very bad quality SOIC clip broken while dumping of the biosof and it must have damaged something on the panel, because it does not turn on, and does exactly nothing when powered. The maximum voltage that could have affected something is the 3.3 or 5v from the IC clip, because the unit was not powered while the bios dumping was in progress.

      I've performed some measurements:
      - 20V rail perfectly...
      09-14-2023, 05:05 AM
    • bimole
      Weird behavior on 3.3V rail of a CORSAIR CX600
      by bimole
      Hi,

      A colleague gave me an apparently ill CORSAIR CX600.
      He told me that he heard a banging noise, and smelt the magic smoke.
      After tearing down the PSU, no burnt component, everything seems OK, but the PSU often refuses to stay ON. When shorting PS_ON to GND, the fan spins a bit a finally stops. No output voltages.

      I tried to treat some apparently bad solder joins and finally it seems to work OK... on the 12V and 5V rails!
      It's another story on the 3.3V rail...

      I have some devices to test deeply PSUs (scope, AC source, electronic load)...
      02-13-2025, 04:49 AM
    • joshAU
      Acer AN515-55-528T FH52M LA-J891P - Short ciruit after PQW1 MOSFET on +1.35VSDGPU rail.
      by joshAU
      Hi all.
      This notebook was showing no signs of life.

      I removed the FH52M LA-J891P mainboard and found that there was 19V at the DC jack.
      However there was zero volts on the two PRB2 and PRB46 resistors immediately after the two polarity protection MOSFETs (PQB11 & PQB12).

      If I remove the PQW1 MOSFET, the 19V rail starts working, and I can turn on the unit - at least I get the fans, and the power light comes on, when I simulate the power button being pressed. No display.

      I tried replacing the MOSFET with a new one, but again no voltage on the...
      05-29-2024, 12:33 AM
    • Loading...
    • No more items.
    Working...