Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
01-07-2022, 05:06 PM
|
Replies: 5
Views: 455
Re: Fujitsu Lifebook E544
Check all Pins to GND. Usually each measurement should be in KiloOhms range. If everything seems fine, the issue might be behind a load switch, or the load-switch itself
|
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
11-14-2021, 04:29 PM
|
Replies: 25
Views: 1,633
|
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
10-21-2021, 02:18 AM
|
Replies: 13
Views: 745
Re: Dell precision 7250
This mosfet should Not beep or Show Low Ohms in any Case. If so, Remove it and Check the empty Pads again. If confirmed, replace it. The issue might be solved after.
|
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
10-19-2021, 12:38 PM
|
Replies: 5
Views: 522
Re: HP 15 day11amb6e0 y11a Shutdown Issue
The fault must be earlier in the sequence. Find Out what exactly is Missing should give the clue. Of course, Schematics will Help a lot Here.
And it Would be also a good start to Check whether PGood...
|
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
10-19-2021, 09:06 AM
|
Replies: 67
Views: 3,016
|
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
10-19-2021, 08:58 AM
|
Replies: 13
Views: 745
Re: Dell precision 7250
Then Share clear Pics of the DC-IN Circuit. At least Mosfets and the Charging Controller should be visible.
|
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
10-19-2021, 08:55 AM
|
Replies: 67
Views: 3,016
Re: Dell E5440 completely dead
Once i Had a partial shorted 5V Rail which was also drawing almost nothing. However the VRM Controller got Mad hot. Case solved.
But yeah i won't expect a massive consumption.
|
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
10-19-2021, 08:49 AM
|
Replies: 67
Views: 3,016
|
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
10-19-2021, 08:20 AM
|
Replies: 67
Views: 3,016
|
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
10-19-2021, 08:15 AM
|
Replies: 67
Views: 3,016
Re: Dell E5440 completely dead
First, Share exact Résistance to GND there in Ohms Mode, Range 200 or Auto-Range to exclude a Short with a step down Circuit.
|
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
10-19-2021, 07:20 AM
|
Replies: 67
Views: 3,016
|
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
10-19-2021, 06:09 AM
|
Replies: 67
Views: 3,016
Re: Dell E5440 completely dead
Unfortunately i can't find datasheet right no for PU701, but you can at least check whether 19V reach Pin1 and of course, you can check each pin for short to GND
|
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
10-19-2021, 05:02 AM
|
Replies: 67
Views: 3,016
|
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
10-18-2021, 04:05 PM
|
Replies: 5
Views: 593
Re: NM-A381 Lenovo yoga 3 14 no power
Once i Had both USB Switches and the VRM Controller bad causing Low resistance to GND at 5V Rail in this Board. You might be lucky but can be a rabbit hole too.
|
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
10-18-2021, 03:52 PM
|
Replies: 67
Views: 3,016
|
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
09-27-2021, 02:39 PM
|
Replies: 13
Views: 1,374
|
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
09-19-2021, 03:24 AM
|
Replies: 11
Views: 733
Re: ASUS GL504GM - no 3.3/5V, bad charger ic
Probably not, what you are looking for. Usually It isn't that hard to find the right Controller or Maybe two of them in Case of Silergy solution (for example). And you're experienced Afaik.
Clear...
|