• 
  New Members - please post your introductions here

  by petabyte

  As this is a brand new forum, I thought I'd open up a thread to encourage new members to introduce themselves a bit.. now hey.. let's not get too personal.. ok ?
  
  And if you wouldn't mind to keep this thread \"clean\" let's try to keep the the chitchat (i.e. even the welcome to the board replies) to a minimum or this thread may get to 100 pages fast
  
  So I'll start things off :
  
  My name is petabyte and I'm a forum junkie. :oops: I've been off the wagon for a number of years and countless times I've tried to stop but it's useless.....

  • Channel: Announcements & Related News

  10-09-2003, 02:21 PM
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  HP PROBOOK 9470M NO DISPLAY OR RESPONSE BUT POWERING ON

  by Denola

  I can't find the signal trace of this ic on the probook 9470m, board number is 6050a2569401-mb-a01,
  And I need to use a jumper wire to sort out the ripped oa

  

  3 Photos

  • Channel: Schematics and Boardviews

  Today, 04:51 PM
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  Lenovo G40-80 ACLU3 ACLU4 NM A362 not charging

  by G_sene

  Hi, everyone.
  
  I have this notebook that won't charge.
  In Windows, the charger icon doesn't appear on the battery, but the charger turns on the notebook normally.
  
  PU301:
  
  Pin 5 (ACOK) - 5.97v
  Pin 6 (ACDET) - 1.83v (should have 2.6)
  Pin 16 (REGN) - 6v
  
  PQ308 has no gate voltage, so it doesn't drive PQ309 low
  
  With the battery connected, its voltage goes the reverse way to the jack, having 14v and not 20v:
  
  PQ301 e PQ302
  
  Pinos 1,2,3 14v
  
  Pino 4 5v
  
  Pinos 5,6,7,8 com 14v...

  • Channel: Troubleshooting Laptops, Tablets, and Mobile Devices

  06-24-2025, 11:22 AM
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  Mac mini M4 (A3238) Ripped Chip - Schematics+BoardView Needed

  by ee91137

  Hi,
  
  I'm looking for assistance with a Mac mini (M4, 2024), model A3238 (Model MCYT4LL/A), which I recently purchased. The front USB-C ports are not providing power.
  
  Upon inspection, I've identified that a chip and an adjacent capacitor have been physically ripped off the logic board near the SSD connector.
  
  Could anyone provide information on the specifications of this missing chip? Additionally, I would greatly appreciate it if anyone has access to the schematics and board view for the Mac mini A3238 logic board.
  
  Thanks for your help!
  ...

  • Channel: BIOS & Schematic Requests!

  07-13-2025, 11:00 AM
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  Aiper Scuba X1 Pool Cleaner Robot

  by iTec

  Hello everyone, I'm not really sure if this is the right place to actually post about this, but i have Aiper Scuba X1 that I'm trying to read the Microcontroller data from. The chip is National N32G455. After dismantling the unit I found a Debug connector and on the backside of the board 6 point that reads: GND RX VCC SWD TX SWC. I'm familiar with Nuvotons, MECxxx, ITE chips but NOT these kinds of microcontrollers. I need someone who can direct me to what's needed to read it ONLINE as they have coated the entire board. I got the ST-Link yesterday and connected the wires as shown in the picture...

  • Channel: Troubleshooting Appliances and other Household Electronic Stuff

  Today, 11:02 AM

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