HP 15ak002no wont start

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • mmhmm
    New Member
    • Oct 2020
    • 4
    • finland

    #1

    HP 15ak002no wont start

    Hello, i have a HP15ak002no mobo model DAX1PDMB8E0 that wont start.

    I took the computer to a repair shop where they had it for months and figured out that there is 19v in the charger port. Im very much a beginner in laptop repair and could use some advice, i have found that once i plug the charger the component marked in the pictures (MS5JA) gets very hot within seconds. Coil next to the chip is connected to ground on both sides and few ceramic capacitors on the other side are too. Should i order a new chip and switch it or could problem be elsewhere?
    Attached Files
  • Techtiger
    Badcaps Legend
    • Oct 2014
    • 1602
    • france

    #2
    Re: HP 15ak002no wont start

    find out the Schematic most prob it's you +3V or +5V regulator IC with a loop find out the IC number those 2 coils are connected with that line , what is the resistance to GND on those 2 cols GRAY

    Comment

    • mcplslg123
      Badcaps Legend
      • Jun 2015
      • 7262
      • india

      #3
      Re: HP 15ak002no wont start

      MS is a sylergy code and the IC in use here is SY8208BQNC and it's a 3V regulator. You need to remove the IC and then again check the impedance on coil connected to it. Btw, i doubt there will be more damages then this IC alone.

      Comment

      • mmhmm
        New Member
        • Oct 2020
        • 4
        • finland

        #4
        Re: HP 15ak002no wont start

        Im not really having any tools to remove it atm but i could order new one and take it to a shop for replace. Can i replace it with any MS*** chip or does it need to be the same MS5JA? Cannot find chip with same name online.

        Comment

        • mcplslg123
          Badcaps Legend
          • Jun 2015
          • 7262
          • india

          #5
          Re: HP 15ak002no wont start

          SY8208BQNC- search with this name and you will get plenty of options. The first 2 letters are important "MS", rest you can ignore as they are date/batch etc.

          Comment

          Related Topics

          Collapse

          • flat-earther
            how to prevent a connected charger from draining battery when not charging?
            by flat-earther
            I have an RC radio handset(Taranis QX7) which doesn't have internal battery charger which means I had to remove the battery every time I needed to charge it.
            So to improve it, I added a 15W USB-C charger board(link) inside and soldered it to the same connector on the PCB where the battery plugs into, great, now I can simply charge it with a USB-C cable.

            but the problem I found is that after the radio sat for two weeks without being used the 2S 18650 battery that I'm using was at 4.2V!
            So the battery is backfeeding the charger and being drained.

            How can I prevent...
            08-07-2025, 01:04 PM
          • master_haze86
            820-01958-A no power sys led = white when charger is connected.
            by master_haze86
            Hi everyone.

            First, let me preface by saying that I do not have much experience with diagnosing damages in motherboards other than visual inspection and checking simple short to ground faults.
            But I do learn quickly, and really want to learn how to properly diagnose motherboard faults. If someone could have the patience to go over this board with me, it would be greatly appreciated.

            A customer came into my shop with a A2179 MacBook with an 820-01958-A logic board. The reason for bringing the laptop in is that the laptop stopped turning on.

            First thing...
            02-15-2024, 05:30 PM
          • motormayhem
            Lenovo T460 Only Charges on One Charger
            by motormayhem
            Laptop Question
            Hello,
            I'm working on a Lenovo T460 that has been having trouble charging as of late. Its worked well since I've owned it for a few years. When I went to use it the other day it was dead and wouldn't turn on (was sitting on an Anker 65W GaN charger). After some fiddling with the charger I got it to turn on and start charging, but seemed like the charger was not working as it should (took a few plug and unplug cycles to get it to start charging).

            A day later it was dead again and wouldn't boot/charge no matter what I did. No lights or anything when...
            05-12-2023, 01:46 PM
          • nikolayu
            Dell Latitude 5420 wont turn on when charger is connected
            by nikolayu
            I have Latitude 5420 that it's working fine on battery but when it's plugged on USB C charger it wont turn on.
            Battery is charging fine. Also, if I connect the charger while laptop is on, everything is fine, it will charge.
            The same thing if I connect to other USB C port.
            Charger is OEM
            03-13-2024, 12:34 PM
          • Document Archive
            ISL88739AHRZ ISL88739 Laptop Battery Charger Datasheet
            by Document Archive
            The ISL88739 & ISL88739AHRZ are a highly versatile combo battery charger
            configurable for operating as either a Hybrid Power Boost (HPB)
            charger or a Narrow VDC (NVDC) charger, supporting 2-, 3-, or
            4-cell batteries. Both configurations allow the battery to work with
            the adapter together to supply the system load when it exceeds
            the adapter capability, referred to as system Turbo mode. HPB
            charger configuration reverse-boosts battery energy to the system
            bus to help the adapter provide the system power in Turbo mode.
            NVDC charger configuration...
            11-05-2024, 03:28 PM
          • Loading...
          • No more items.
          Working...