A1369 820-3023 not powering up - green light

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • mon2
    Badcaps Legend
    • Dec 2019
    • 13871
    • Canada
    #1

    A1369 820-3023 not powering up - green light

    hi. have an a1369 820-3023 with the magsafe power adapter (original) light green.

    PPBUS_G3H @ 8v6.

    PP5V_S3_REG @ 0v (should be 5v0)

    PP3V3_S5_REG @ 2v4 (should be 3v3)

    Could U7201 switcher TPS51980 (which is common to both rails) be defective?

    Do not see any low resistance on the caps. No liquid damage indicators on this board (still white).
    Tags: None
    • zpi
      Senior Member
      • Feb 2018
      • 132
      • Lithuania
      #2
      Re: A1369 820-3023 not powering up - green light

      Check resistance to ground on L7260 and l7220

        Comment

        • mon2
          Badcaps Legend
          • Dec 2019
          • 13871
          • Canada
          #3
          Re: A1369 820-3023 not powering up - green light

          Thanks for your reply.

          L7260 ~6kohms and fluctuating (rising up)

          L7220 ~2Mohms and going down slowly

            Comment

            • zpi
              Senior Member
              • Feb 2018
              • 132
              • Lithuania
              #4
              Re: A1369 820-3023 not powering up - green light

              Then check if you have 3v_s5 enable on 51980 and all Vin's. if yes, just change it

                Comment

                Previous template Next

                Related Topics

                Collapse
                • MOSSEP
                  Monitor Audio RSW12 - Green light, but no sound
                  by MOSSEP
                  Hi

                  Im hoping someone might be able to give me some idea of what may be wrong with my Monitor Audio RSW12 Sub.

                  Ive owned it since new in around 2002, so would really like to keep it running if I can, it was the first β€˜decent' bit of audio equipment I ever purchased and is a little sentimental.

                  The issue I had was that it would power up with the red light, but sometimes the green light would not come on and I would get no bass from it. If the green light did come on though, I would get sound out of it.

                  I have already tried replacing all of the...
                  01-26-2025, 08:33 AM
                • MOSSEP
                  Monitor Audio RSW12 - Green light but no audio
                  by MOSSEP
                  Hi

                  Im hoping someone might be able to give me some idea of what may be wrong with my Monitor Audio RSW12 Sub.

                  Ive owned it since new in around 2002, so would really like to keep it running if I can, it was the first β€˜decent' bit of audio equipment I ever purchased and is a little sentimental.

                  The issue I had was that it would power up with the red light, but sometimes the green light would not come on and I would get no bass from it. If the green light did come on though, I would get sound out of it.

                  I have already tried replacing all of the...
                  01-26-2025, 08:18 AM
                • lcdcaps1
                  820-2610-A Sys onewire help, no green light. Please help from the gurus
                  by lcdcaps1
                  Hi

                  I have an 820-2610-A motherboard that has no green light.
                  I have noticed is when I do a SMC reset the light on the Magsafe blinks.
                  From My understanding, the sys onewire circuit is responsible for the green light on the magsafe
                  The sys onewire circuit on this model and others is more involved
                  I was hoping if anyone knows about this and how it works, can reply and let me know
                  I know this is an old model but I am sure there are people who still works on these or knows about them

                  I get 1.1v on the C7771 capacitor and will replace...
                  11-06-2023, 01:28 PM
                • serious_electron
                  Strange! Acer laptop not powering on but charging the battery (orange light on when charger and battery plugged in).
                  by serious_electron
                  Hello Everyone!

                  I have an Acer Aspire A315-42 laptop. I generally leave it on for long time by closing down its lid (so it enters the sleep mode). Recently, it rained quite heavily in out area. And the humidity and moisture seem to be high. So one late evening, after I opened the lid and turned on the laptop, it did power on as the blue light turned on but after it booted to the desktop screen, just 5-10 seconds after both the screen and blue light went out and laptop shut down (the blue power light turned orange). And after 2-4 seconds that orange light went off and the laptop died.                  ...
                  06-28-2025, 02:57 PM
                • blazzelia
                  MBP A1286 820-2915 green light only, no start
                  by blazzelia
                  Hi guys,

                  I have this 2011 MBP - the company I was working for, bought it at the time for a project and gave it to me after that. Later on, I gave it to my daughter which used it for normal internet browsing and office apps. At some point the, now famous, AMD GPU issue hit this laptop as well. I disabled the use of the AMD GPU following some information I found at the time (the one that, at the end, one moved AMD kext drivers to a backup location). So the laptop was using the CPU graphics and it was ok for the said daily usage. I even replaced the drive with an SSD one and it was operating...
                  09-30-2024, 07:20 AM
                • Loading...
                • No more items.
                Working...