A2442 820-02098 5v 0a - PP3V8_AON short

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • saisoni20
    Senior Member
    • Feb 2022
    • 111
    • Canada
    #1

    A2442 820-02098 5v 0a - PP3V8_AON short

    Good afternoon,
    I'd appreciate help diagnosing my A2442 that's only taking 5v and 0a. Magsafe charger is not working.
    PPBUS_AON (Battery unplugged) - ~12.00

    Found out PP3V8_AON is short to the ground. I have feed 1V and U7700 is getting hot.
    Is there any way to isolate U7700 from PP3V8_AON. Just to make sure any other component is not bad which is causing U7700 to get hot.


    Thanks in advance ​
    Tags: None
    • mon2
      Badcaps Legend
      • Dec 2019
      • 13830
      • Canada
      #2
      Lift one leg on each of the multiphase inductors of PP3V8_AON.

      So this involves:

      L5800
      L5820
      L5840

        Comment

        • saisoni20
          Senior Member
          • Feb 2022
          • 111
          • Canada
          #3
          Hi Mon2
          I have tried removing those inductors same U7700 is getting hot.

            Comment

            • electroelef
              Senior Member
              • Jun 2014
              • 57
              • United Kingdom
              #4
              I just had the same behaviour. C7714 was shorted. I was lucky.

                Comment

                • kalum
                  New Member
                  • May 2023
                  • 2
                  • srilanka
                  #5
                  so guys, in my case PP3V8_AON this line is not stable. UR630 has failed​.

                    Comment

                    Previous template Next

                    Related Topics

                    Collapse
                    • Stephen
                      MacBook Pro 14" A2442 Short on PPBUS_AON but no short present when injecting voltage!
                      by Stephen
                      I check PPBUS_AON and there is a short present on the line, the computer shows a short when testing for short to ground, so when I inject voltage into the line, I get 0AMPS so no short is showing up. I have replaced a blown cap on this board that exploded and tested for the short and it is now removed. Any suggestions? I tested voltage at the line when the fuses are connected and I am getting 1.2 Volts at the line.
                      02-06-2025, 12:03 PM
                    • DynaxSC
                      Extreme High Current & Low Voltage Short Killer ??
                      by DynaxSC
                      Hi Folks

                      I'm looking for a extreme high current short killer solution for a reasonable cost.

                      I have an LGA1700 motherboard (ASUS PRIME Z790-P WiFi) where I exchanged the LGA socket already 3 times, and every time after the socket exchange I get a short of power supply lines VCORE (V variable) and VCCIN_AUX (1.8V).
                      After taking off the socket, the shorts dissappear again.
                      The soldermask on the socket is already partially demaged from the heat, so I have reconstructed the soldermask by manually painting the missing soldermask parts with a very small top of a...
                      10-15-2024, 10:13 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
                    • aaronkatrini
                      Help me find the short circuit on this WORKING Nvidia GTX1650
                      by aaronkatrini
                      Hi all,

                      Recently picked up this GTX1650 at a local flea market for a low price and wanted to use it on my secondary PC. I first tested the card and saw the fan spin for a split second and then nothing. Immediately I thought of a short circuit. Disassembled and found a shorted SMD capacitor, injected voltage into it (1V/4A) and two Mosfets got hot immediately (QN3103 & QN3107). Desoldered these Mosfets and the card turned back to life.

                      Bought replacements from Aliexpress and replaced them afterwards. Tried the card but still the saw the fan spin for a split second...
                      04-18-2024, 03:15 PM
                    • Geeker007
                      9th Gen Dell Optiplex Micro PC motherboard repair: Short Circuit?
                      by Geeker007
                      Hi All, I have a 9th Gen Dell Optiplex micro PC motherboard which doesn't power on. When I connect the motherboard with power adapter, it goes into safe mode and turns off. So from info I have gathered online, it looks like there is a short circuit on the motherboard. So can you guys help me with figuring out the issue?

                      I am new to electronics repair, so my queries could be naive but I am ready to learn.

                      So I have a multimeter and a solder with me. But I can try to get a variable voltage power supply with a thermal camera as well. From what I seen online, best way is...
                      01-28-2025, 03:31 PM
                    • Loading...
                    • No more items.
                    Working...