820-3437 loud FAN - Liquid spill

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • badcaps
    Member
    • Jul 2005
    • 19
    #1

    820-3437 loud FAN - Liquid spill

    I have 820-3437 with liquid spill corrosion around the SMC , I/O cable need replacement , corrosion around U7600 , U5800 etc ... I cleaned the impacted area. This has few Proximity sensor and all look clean. Q5810, Q5830, Q5860 ,

    The board is completly removed from the laptop and only the FAN , heat sink and the I/O board is connected. When I plug the adapter there is no light and the fan start spinning loud.

    Any clue what can cause this ? I am going to order New I/O board but I am not sure if this will solve the loud fan issue.
    Tags: None
    • piernov
      Super Moderator
      • Jan 2016
      • 4435
      • France
      #2
      Re: 820-3437 loud FAN - Liquid spill

      No light: DC-in board itself, its cable or the connector on the motherboard (may have damaged pins or pins that became unsoldered) most likely. If that doesn't solve it it could be related to the SMC.

      High speed fan: you have to plug back the board into the assembly and connect everything. (well… at least the touchpad)
      Last edited by piernov; 03-14-2019, 02:59 AM.
      OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

        Comment

        Previous template Next

        Related Topics

        Collapse
        • trepachka
          A2338 820-02020 Backlight is on, no image after liquid spill
          by trepachka
          Laptop boots but there is no video, backlight is on after the liquid spill. I can hook up the laptop to a TV and the image is fine there.

          Can anyone point me in the right direction? Could it be a dead screen? Most of the liquid spill is concentrated around system fan connector.
          10-21-2023, 09:22 PM
        • Chemox
          ASUS G15 G513QM-HN064T liquid spill on RT8231A
          by Chemox
          A while back I cleaned a laptop that had liquid spilled on it.

          After a week or two of working just fine it started to 'not boot' properly.
          Fans spin up to the maximum and keyboard backlight goes on but screen remains black. Power cycling resulted in a hit or miss. One time it would boot the next it wouldn't.

          Few weeks later, it never boots and only gets stuck in this intermediate mode. I suspect the DRAM doesn't get powered.

          With the help of reddit I figured out that the IC next to the spill is the RT8231A from Richtek.
          https://www.ri...
          11-07-2022, 04:43 AM
        • questore
          GL502VMK keyboard not working after liquid spill
          by questore
          Hi Everyone.

          This nice ASUS GL502VMK 2.1 Board come to me after a liquid damage.
          They replaced the keyboard but still only the power button works. NO damage can be seen around the IT controller.
          Windows showing 2 keyboard devices after all software installation. (HID and ps2 compatible keyboard)
          Anyone had this fault before? What do you suggest?...
          03-17-2025, 05:40 AM
        • mitchw
          MacBook Pro 16 M1 Pro Liquid Damage (820-02100)
          by mitchw
          Got a MacBook Pro M1 Pro 16'' to rescue immediately after liquid accident - I got it in less than 30 minutes after the spill.
          It got spilled from behind when the laptop was closed. It mostly affected the rear of the mainboard and the bottom of the LCD.

          I quickly took it apart and washed the liquid residue off the mainboard.
          The area around the UP800 had some light corrosion, but it just washed away with some IPA. Other areas looked undamaged.

          The mainboard got a thorough cleaning, as did the top case and LCD connectors / cables.

          Now the laptop...
          07-16-2025, 07:55 AM
        • ugamazing
          820-02918 PPBUS Cycling, Minor Liquid.
          by ugamazing
          Working on an 820-02918 board that had a minor liquid spill, but it was directly to the ISL/U5200. Essentially the entire area had to be replaced due to corrosion. Got it all cleaned up and everything looks good and checks out, but we're hitting a cycling PPBUS issue now. PPBUS_AON cycles quickly from ~9v-12v, indefinitely.

          Knowing this is typically a sign of a possible short on a lower rail, we checked all around and found no obvious damage or shorts. We have VERY LIMITED parts for this model (exactly 1 single U5200 chip), but I suspect it will end up being a continuity issue or...
          02-18-2025, 11:21 AM
        • Loading...
        • No more items.
        Working...