• 
  Dell Precision 5520 / LA-E331P r2.0 starting into CPU-failure

  by PeteH

  Hi everyone,
  
  I have here a broken Dell Precision 5520 / LA-E331P r2.0 to play with
  I found the schematics for r1.0, but not for r2.0.
  
  The situation
  - the laptop turns on, but the screen stays black -> the dell diag-LED shows the blink pattern for "CPU failure"
  - the voltages close to the CPU stay at low
  - I don't see any hotspots on the PCB (thermal imaging camera)
  - some spots/areas on the PCB indicate some kind of liquid "damage"
  
  Before I start digging though 70+ pages of schematics, maybe somebody...

  • Channel: Troubleshooting Laptops, Tablets, and Mobile Devices

  10-12-2025, 07:54 AM
• 
  ASUS Vivobook X1500e - no image and no backlight. Can this be fixed?

  by dfear

  ASUS Vivobook X1500e came in with no image and no backlight.
  
  Motherboard is: x415ea.
  
  Current knowledge/observations:
  RAM, LCD & LID sensor = oood.
  LCD connector - AC_BAT_SYS_ is present.
  D4501 schottky diode - LCD_BACKOFF# is always 3.3V, whether the lid is closed or not.
  CPU thermal signature seems normal.
  Laptop boots and outputs to HDMI.
  
  Is part of the CPU bad or can this be fixed?

  • Channel: Troubleshooting Laptops, Tablets, and Mobile Devices

  Today, 04:02 AM
• 
  fujitsu w26361-W1881-Z2-02-36 BIOS UNLOCK

  by rabsonnjala

  Hallo team i need your assistance to unlock the above BIOS. i couldnt find dumps on the internt. Please find the attached image for extra info. the fujitsu unlock tool aint working as well . thanks...

  • Channel: BIOS Requests ONLY!

  Yesterday, 11:12 AM
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  NVIDIA GeForce GTX 1650 Schematic & Board View

  by Document Archive

  NVIDIA GeForce GTX 1650 Schematic & Board View
  
  The GeForce GTX 1650 is a mid-range graphics card by NVIDIA, launched on April 23rd, 2019. Built on the 12 nm process, and based on the TU117 graphics processor, in its TU117-300-A1 variant, the card supports DirectX 12. This ensures that all modern games will run on GeForce GTX 1650. The TU117 graphics processor is an average sized chip with a die area of 200 mm² and 4,700 million transistors. It features 896 shading units, 56 texture mapping units, and 32 ROPs. NVIDIA has paired 4 GB GDDR5 memory with the GeForce GTX 1650, which...

  • Channel: Schematics and Boardviews

  10-02-2024, 07:39 AM
• 
  Thinkpad L14 G2 AMD (NM-D391) Power On / Supervisor password

  by kitor

  Hey,
  I just revived this motherboard (fixed no POST, thanks to a BIOS from this thread)
  
  Now there's a supervisor password required on power on. It is stored likely in EC, which is Nuvoton NPCE68BPA0DX (sometimes misspelled as NPCE688).
  
  I've seen some success on reading this chip in thread for Intel version of this laptop here.
  
  I have access to RT809H programmer. Is there any chance of programming this EC with it? If not I guess I need to find someone with vertyanov?
  
  Or maybe there's a way to bypass just power-on requirement by modifying...

  • Channel: BIOS Requests ONLY!

  09-12-2023, 07:33 AM

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