iPad Pro 12.9 2nd Gen A1671 - 1mA No Power, No Charge

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • KappaDev
    Member
    • Feb 2019
    • 41
    • USA
    #1

    iPad Pro 12.9 2nd Gen A1671 - 1mA No Power, No Charge

    Hi all,

    I have a 2nd generation iPad Pro 12.9" Model number A1671. I don't usually work on these, but I suppose today is the day I start. Apologies for any ignorance on tablet matters. On Type-C to USB amp meter, showing 5v @ 1mA
    (0.005W) then instantly to 0mA back and forth. Power draw is the same with and without screen and with and without battery connected. Of course, not enough current for anything to show on thermal camera.

    I can't find any boardview and I'm not certain it even exists. Probing coils on top side of board reveals no voltage present anywhere. Port appears clean and unobstructed. Tried multiple chargers, cables, etc.

    Any ideas?
    Attached Files
    Last edited by KappaDev; 04-05-2023, 02:02 PM.
    Tags: None
    • mon2
      Badcaps Legend
      • Dec 2019
      • 13834
      • Canada
      #2
      Re: iPad Pro 12.9 2nd Gen A1671 - 1mA No Power, No Charge

      A BV file is available on a paid service.

      https://www.youtube.com/watch?v=RTlgWjut1RE

        Comment

        Previous template Next

        Related Topics

        Collapse
        • proxneo
          iPad A2197 no power, A10 and other IC become warm, only 0.5A charge
          by proxneo
          Dear reader

          TL;DR: iPad not turning on, A10 and power IC become (very) warm when attempted to turn on but this power-on cycle has a 'cooldown' period wherein powering on doesn't work, does not take more than 0.5A charge.

          I am working on an iPad 7th generation 2197 from >2019 with no / limited charging and no boot issues. It is a refurbished purchase made in 2021. It appears the 'refurbish' company has either done prior motherboard work (all protective component shield layers are gone) or is one of the many trash refurbish companies (little screen adhesive left, component...
          12-01-2023, 04:14 AM
        • grimacelord
          Apple iPad Pro 3rd Generation 12.9" (A1876) No Power/Charge When Screen Is Connected
          by grimacelord
          Hello.

          Working on an Apple iPad Pro 3rd Generation 12.9" that has a weird issue. When the display is NOT connected, the iPad will charge and power on normally. I know it's on because I can hear notification sounds and the charging notification sound.

          If I connect a brand new display to the logic board, the iPad will not turn on at all. When I connect the iPad to an 18W wall charger and a USB-C ammeter, I can see that the iPad is attempting to charge, but constantly "resets" after just a moment or two.

          For example, when I connect the iPad to...
          04-15-2022, 11:06 AM
        • 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...
          ORIGINAL POWER SUPPLY BOARD
          7 Photos
          11-22-2024, 01:46 PM
        • ipatch
          troubleshooting microsoft surface pro 4 no power no led charge light
          by ipatch
          hello, �� i have been sitting on some microsoft surface pro 4 tablets for a while now. i was originally tasked with replacing the battery in one of the tablets, and ended breaking the screen and logic board in the process. decided to buy another tablet with the same specs. got that screen off successfully of the second tablet. the logic board appeared good, but i guess i shorted something out in the installation process of the logic which i've read is a common issue if there is no barrier between the logic board and battery pins. all that said, i ate costs of the repair and have...
          10-05-2023, 11:59 AM
        • PantherDave
          Microsoft Surface Pro (5th gen) model 1796 - no power
          by PantherDave
          Hi all!

          I'm trying to troubleshoot a Microsoft Surface Pro (5th gen) model 1796 that won't power on. Motherboard model is M1007506-015. My priority is retrieving data, but the SSD is integrated so it looks like if I can't repair it it'll need to go to a data recovery company. I've done a little basic board repair before, but nothing this advanced until now. So please forgive my ignorance in advance. 😅

          I found the boardview for this laptop in the forums here, and am able to open it on my PC with FlexBV.
          https://www.badcaps.net/forum/troubl...-hardware-devi...
          05-29-2024, 02:01 PM
        • Loading...
        • No more items.
        Working...