Ps5 edm-033 bios and southbridge standby voltage

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • Bloutix
    New Member
    • Oct 2025
    • 1
    • France

    #1

    Ps5 edm-033 bios and southbridge standby voltage


    Hi all,

    i need your help for understanding if there is an issue around my bios on edm-033 and around southbridge pin P16 and P17.

    I have removed my Southbridge and when I check standby voltage on the bios, I’ve got this value:
    • pin 1: 0,16v
    • Pin 8: 3,3v
    • Pin 7: 3,3v

    I think there is an issue between 3,3v line and cs pin, but I don’t know where.

    then this are the values on SB P17 and P16: 0,93v, But I have 3,3v on L17.

    Thanks for your help.

Related Topics

Collapse

  • tvguy12012012120
    Zombie Samsung UN55NU6900F dead / no standby voltage - randomly came to life after hours of troubleshooting then died
    by tvguy12012012120
    This is my first attempt at troubleshooting a board like this, I know I could just buy a new board but I'm curious to figure out how this works. I've been testing different components in the evenings this week and I think the problem is with the IC failing to start up for some reason. When the board is plugged in there is no standby voltage.

    Then today it randomly sprung to life like a zombie but shortly died thereafter. I have no idea why it would have done that and its the first time I've seen it running. I discharged capacitors on the board last night, then it was sitting today....
    02-07-2025, 05:13 PM
  • macabook
    🛠️ MSI GP75 Leopard MS-17E71 – No Display, Deep BIOS/EC Troubleshooting
    by macabook
    Hello everyone,

    I’m currently working on a dead MSI GP75 Leopard (MS-17E71) motherboard (i7 CPU, NVIDIA GPU) with a no display/no backlight issue initially. After extensive investigation, I’m at a critical stage involving EC firmware, BIOS/ME region interaction, and possible deep corruption. I'm seeking advanced insight from anyone with experience in EC/BIOS sync issues or PCH-level behavior. Here’s a full breakdown:
    🧩 Initial Issue
    • Board powers on (fans spin, keyboard lights up and can be adjusted, caps lock led lights), but no display or backlight
    • External display (HDMI) shows
    ...
    07-24-2025, 02:17 PM
  • cr4zychriss
    [Problem/ Request] Bricked TongFang GK7MRFR BIOS
    by cr4zychriss
    Hello everyone,
    I am requesting urgent assistance to unbrick my laptop, a rebranded TongFang GK7MRFR chassis. The laptop is completely dead following a faulty in-OS EC flash attempt.
    I have successfully used a CH341A programmer and can read/write/verify both flash chips, but using my backups/extractions has failed to restore power. The root cause is likely a corrupted Intel Management Engine (ME) region or an incompatible EC/BIOS pairing. System & Hardware Details
    • Barebone / Chassis: TongFang GK7MRFR
    • MB: MB: GK5MP5X V1.0 Prod :GK5MRFV10T04201310281
    • Rebrand: PC Specialist
    ...
    11-14-2025, 04:04 PM
  • erico
    Lenovo X1 Carbon BIOS not getting voltage
    by erico
    First of all, ive veen reading these forums for some time and its always veen very helpful, so i thank you all for this amazing comunity.

    I have a lmq-2 13268-1 motherboard from a lenovo x1 carbon 3rd gen. And the MX25l12873f (U49) bios pin 8 is not getting voltage.

    So far these are my diagnostics:

    When given 19v trough power adapter, consumption reads 0.003 amps for about 5 seconds then nothing.

    When power button pressed same result, and i get three green blinking lights from the pwr btn led. But foesnt turn on.

    If i plug the battery...
    05-02-2024, 02:40 AM
  • pirati
    ASUS Zenbook Pro Duo UX8402ZA BIOS
    by pirati
    Hello everyone,

    I recently bought a non-working Asus Zenbook Pro Duo OLED UX8402ZA that was listed for parts only. The seller mentioned that it had no display output but that the charging lights worked.

    When the laptop arrived (without a charger and SSD), I connected a charger and confirmed with a multimeter that it was charging the battery. However, when I tried to power it on, only the backlight of the secondary display came on. There was no image, and it didn’t boot into the BIOS.

    I decided to try flashing a new BIOS, but since I didn’t want to desolder...
    10-27-2025, 04:20 PM
  • Loading...
  • No more items.
Working...