A1706 no power, no liquid

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • harryw
    New Member
    • Apr 2020
    • 6
    • USA
    #1

    A1706 no power, no liquid

    Hi,

    looking at a friend's dead MacBook Pro (A1706). Input voltage 20.41V with a current of 21mA.

    Upon visual inspection I noticed blown capacitor C6580 and verified that a short to ground exists.

    I am assuming this is the same cap as the ones nearby labelled NEB CN7, which I've tracked down to Mouser part number 80-T521B336M016ATE70

    Can anyone with a A1706 board confirm that C6580 is indeed labelled NEB CN7?

    Thanks & cheerio, Harry.
    Attached Files
    Tags: None
    • BlueMidnight
      Badcaps Veteran
      • Jan 2015
      • 489
      • United States
      #2
      Re: A1706 no power, no liquid

      One quick way of answering questions like this is to do an image search for that logic board model. One such (cropped) result is attached, where you can see all caps are labeled "CN7".

      Note that last letter of the top line is unimportant. It's just a manufacturing month code. "NE" is the product code and CN7 is the rating (33uF 16V).
      Attached Files

        Comment

        • harryw
          New Member
          • Apr 2020
          • 6
          • USA
          #3
          Re: A1706 no power, no liquid

          Thanks @BlueMidnight - could have thought of that myself
          It also means I bought the right part

          Will report back as soon as I've had a chance to replace the cap.

            Comment

            • harryw
              New Member
              • Apr 2020
              • 6
              • USA
              #4
              Re: A1706 no power, no liquid

              Replaced cap and happy to report that MacBook Pro is alive again!

              Cheerio, Harry.
              Attached Files

                Comment

                Previous template Next

                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...
                  ORIGINAL POWER SUPPLY BOARD
                  7 Photos
                  11-22-2024, 01:46 PM
                • 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
                • GLISIT
                  Asus Probook P5440UF-XB74 power issue
                  by GLISIT
                  Hi all,

                  TL;DR - this laptop is driving me nuts with the oddball power-related behaviors. Appreciate any insight you can provide!


                  I'm experiencing a power issue on an Asus Probook P5440UF-XB74. Although I've worked with electronics and computers for decades, this is my first attempt at getting into motherboard-level component troubleshooting. Any help the community can provide is greatly appreciated!

                  A few weeks ago I was using the laptop (on battery power) for a Zoom meeting. The battery was running very low (long meeting) but I wasn't worried about...
                  01-16-2025, 02:29 PM
                • sam_sam_sam
                  Desoldering gun station modified to use a 18 volt @ 20 amp switching power supply
                  by sam_sam_sam
                  I have wanting to do this project for quite sometime now and I finally found a switching power supply that will work on this desoldering gun station ZD-915 that the original switching power supply took a shit and just was not worth trying to fix it because this switching power is not quite big enough to handle the heater element and the vacuum pump

                  One note when I tested the switching power supply and the voltage control board I noticed that this desoldering gun heat up much faster than the original switching power supply which I was really surprised by to the point that I might buy...
                  03-31-2024, 02:12 PM
                • Document Archive
                  HP Pavilion Power Pavilion Power 15-cb009nl Notebook 15 Specification for Upgrade or Repair
                  by Document Archive
                  This specification for the HP Pavilion Power Pavilion Power 15-cb009nl Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the Pavilion Power 15-cb009nl boardview and Pavilion Power 15-cb009nl schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that...
                  09-06-2024, 05:59 AM
                • Loading...
                • No more items.
                Working...