Acer z5wah la-b161p - What causes dead touchpad?

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  • honigmann
    New Member
    • Jul 2020
    • 6
    • Germany
    #1

    Acer z5wah la-b161p - What causes dead touchpad?

    I have two of these devices here. The first had been working without any issues and the second came with a dead touchpad. To figure out if there is a problem with the board or with the touchpad itself I cross swapped the keyboard/touchpad unit on both devices and none of the touchpads worked. Unfortunately, aber swapping back the keyboard/touchpad unit the touchpads on both devices failed (also tested with Ubuntu).

    There are no fuses on the board and I could not see any damage under the microscope. I get the 3V_PTP on the U2507 (p28). How would you diagnosed this issue?
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    • mon2
      Badcaps Legend
      • Dec 2019
      • 14112
      • Canada
      #2
      Re: Acer z5wah la-b161p - What causes dead touchpad?

      Confirm the voltages on the I2C (SMBUS) lines:

      TP_DATA_TP
      TP_CLK_TP

      Also, post the voltages you see on JTP1 connector.

        Comment

        • elvirpa800
          Member
          • Nov 2019
          • 27
          • Deutschland
          #3
          Re: Acer z5wah la-b161p - What causes dead touchpad?

          Bro before touching mainboard try to reinstall first instal chipset driver then the Correct touchpad driver (Install all 3) and after the serial IO driver .

          Restart to bios than go to touchpad settings change it to Basic F10 and exit.
          Restart Again to bios than chose touchpad settings to advanced.F10 Exit

          Restart to windows Press Fn+F7 and maybe it works Again.

          It is worth a try i had it done many times.

            Comment

            • elvirpa800
              Member
              • Nov 2019
              • 27
              • Deutschland
              #4
              Re: Acer z5wah la-b161p - What causes dead touchpad?

              And Forget to say you need Also install the Quick Access Application without this your fn key will not work correctly

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