Lenovo 530 Vcore : what is the maximum ripple?

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • Antonynl
    Senior Member
    • Apr 2021
    • 74
    • Nederland
    #1

    Lenovo 530 Vcore : what is the maximum ripple?

    Hi

    I have a Lenovo 530 14ikb i5 8th gen motherboard and it fails to start Windows: it normally dies after I try to load Windows. Getting into bios screen works fine.

    Made some measurements and I suspect that there is to much ripple on the 2 Vcore coils.

    What is normally the maximum ripple allowed on say any of the power supplies? A few %??

    The ripple is on both Vcore as outlined in red in attached photos.

    Could be a bad driver?

    Cheers
    Attached Files
    Tags: None
    • Antonynl
      Senior Member
      • Apr 2021
      • 74
      • Nederland
      #2
      Re: Lenovo 530 Vcore : what is the maximum ripple?

      Ps i am using a 1:10 probe so ripple is about 150mV on a 0.75 or so DC voltage

        Comment

        Previous template Next

        Related Topics

        Collapse
        • Bartoloni
          Lenovo S145 -15iwl vcore inductor warm.. looking with oscilloscope there is a spike.
          by Bartoloni
          Hi, i have a Lenovo S145 that after 20 seconds shutdown and restart (it's working correctly on thse 20 seconds)
          everything seems ok, but on Vcore inductor ( this is an i3 with just 1 switching power supply for CPU)

          there is an output to teh CPU with a spike.. seems that inductor can't handle the input...
          replaced the capacitor (330) and the inductor (R15) without any change
          any idea? very thank you!

          input of the inductor seems as usual... only strange thing is that the upper/lower voltages seems to be 21V (main power line is 19.3) ... but not sure this...
          12-09-2024, 12:42 PM
        • Gamer24
          Lenovo IdeaPad L340-15IRH - NM-C361 turns on and stays on but no CPU Vcore
          by Gamer24
          I've been working on this laptop for a weeks it was in another shop the owner was cleaning thermal compound with Akai Dry Spray it's a Video Cleaner and the laptop didn't turn on after and it's been in the other shop for 2 weeks when I got the laptop it had ripped pads for PU702 (SY8286RAC) and the IC was missing from the laptop it's responsible for VCCIO line I've repaired the pads and put in a new IC and and the laptop is turning on fan spins for a second then nothing happens laptop stays on but without Voltage on CPU Vcore
          here's Some rails and signals I've measured
          ...
          10-10-2024, 06:30 AM
        • Document Archive
          Lenovo 3000 Series Schematic
          by Document Archive
          Lenovo 3000 Series Schematic

          Lenovo 3000 was a line of low-priced notebook and desktop computers designed by Lenovo Group targeting small businesses and individuals. It was replaced with the IdeaCentre and IdeaPad brands.

          3000 C100 laptop with Braille keyboard
          Lenovo 3000 C
          C100, C200 - 15-inch XGA screen
          Lenovo 3000 N
          N100, N200 - 14.1-inch- and 15.4-inch- WXGA models
          N500 - 15.4 inch screen.
          Lenovo 3000 V
          V100, V200 - 12.1-inch WXGA models
          Lenovo 3000 G
          G400, G410, G430, G450, G455, G510, G530, G550, and G560...
          10-04-2024, 06:05 AM
        • derradji89
          Need help Lenovo MIX 320-10lCR domaine name SERCOL
          by derradji89
          Hi everyone 🤗
          I have a Lenovo MIX 320-10lCR computer.**
          1. **Operating System**: Windows 10 ** Education** 64-bit.
          2. **User Account Restrictions**: The account I'm using has heavily restricted permissions via **UAC** and **Group Policy**. This means I cannot install any software without admin rights, adjust system time, run Command Prompt as administrator, or modify the registry via Regedit—all are blocked.
          3. **BIOS Password Protection**: The BIOS is locked with a password, preventing me from installing a new operating system.
          4. **BIOS Chip Reflashing**: Currently,...
          04-19-2025, 03:04 PM
        • andrhouseolly
          Lenovo X240 - motherboard replacement for X250, no image.
          by andrhouseolly
          Friends. I beg you to help me in this situation.
          Lenovo X240 with a video problem. Native Intel drivers are not installed,
          after installation, a black screen. It works with the standard Microsoft driver.
          Understanding that there are problems with the video core,
          I ordered a motherboard from Lenovo X250.
          The laptop turns on, starts up, there is no image on the internal display.
          The image is output to the external monitor.
          I ordered another motherboard from Lenovo X250.
          The laptop turns on, starts up, there is no image on the internal display.
          ...
          07-12-2024, 03:02 PM
        • Loading...
        • No more items.
        Working...