Dell Latitude E6500/Precision M4400 Compal LA-4051P Schematic
-
Last edited by Vesko356; 07-25-2023, 06:33 PM. Reason: Post/schematic moved from the Tech sub-secton.
-
Hello everyone.
A Dell Latitude G5 5587 Compal LA-E994P r1.0 laptop arrived — it doesn’t start. I flashed the BIOS with a clean ME, and the currents changed. It now reboots cyclically; standby voltages are present, and for a moment the following voltages appear:
+1.35VS_VGAP — resistance 135 Ω
+GPU_CORE — resistance 0.2 Ω
+GPU_CORE_VDDS — resistance 0.2 Ω
I’m attaching the schematic and Boardviewer from a similar LA-E993P board - https://www.badcaps.net/forum/troubl...ets-and-mobile...10-29-2025, 04:46 AM -
Laptop has firmware issues (EC and BIOS) with plans to replace both Chips.
I already have the EC firmware extracted.... But the BIOS is very weird.
Macronix MX25L3205D Chip. 4MB. That is the BIOS chip. I plan to flash a Winbond to replace it.
Pin 1 (CS) and Pin 5 (MOSI) Broke off the SOIC-8. After Extraction (During it both pins were loose, desoldering is mandatory for Precision M4400 bios extraction)
I extracted 5 different BIOSes that have incomplete headers using flashrom. (All 5 extractions are corrupt)
I need a full dump.... -
This specification for the DELL Precision 3630 can be useful for upgrading or repairing a desktop PC that is not working. As a community we are working through our specifications to add valuable data like the Precision 3630 boardview and Precision 3630 schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for DELL...09-12-2024, 03:44 PM
-
This specification for the DELL Precision T3620 can be useful for upgrading or repairing a desktop PC that is not working. As a community we are working through our specifications to add valuable data like the Precision T3620 boardview and Precision T3620 schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for...09-12-2024, 03:44 PM
-
This specification for the DELL Precision 5820 can be useful for upgrading or repairing a desktop PC that is not working. As a community we are working through our specifications to add valuable data like the Precision 5820 boardview and Precision 5820 schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for DELL...09-12-2024, 03:44 PM