Hello friends, i have a dell desktop computer, only amber yellow light on the motherboard nothing, when i checked no 3.3v on the power button, anyone with useful tip on how to fix please
-
-
Re: Dell optiplex 755 desktop dead
Check the caps....<--- Badcaps.net Founder
Badcaps.net Services:
Motherboard Repair Services
----------------------------------------------
Badcaps.net Forum Members Folding Team
http://folding.stanford.edu/
Team : 49813
Join in!!
Team Stats
-
Dell OptiPlex 390 Desktop Schematic & Board View
MIH61R (Dell OptiPlex 390)...10-05-2024, 01:54 PM -
Dell OptiPlex AIO 3030 Desktop Schematic
13048-1...10-21-2024, 05:09 AM -
Hello.
I received a bios locked 7410 with 25Q256JVEQ ,i dump the bios, unlocked it and flash it back, since then the laptop has no life signs at all except amber led on for as long the power button is pressed, nothing else.
Fact #1 i was unaware that 25Q256JVEQ is 3.3v and i used a 5v CH341A to program it, not sure if the chip got damaged but since then i can read it and write it normally, doesn't seem dead.
Fact #2 i modded the CH341A to 3.3v, same results with programming though, nothing changed.
Fact #3 i tried hard reset with cmos/main battery disconnected and power... -
My question pertains to understanding the control circuity inside a Dell PT434 type battery used in Dell E6400, E6410 and other Dell notebooks?
Does anyone have a circuit diagram for the inside of a Dell PT434 battery and/or a description of how the control lines work to control this battery?
My reason for asking is I have a battery which I cannot get to charge beyond 1% in a Dell E6410 or E6400.
The LED bar graph charge indicator on the battery shows one LED lighted when the info button is pressed.
I have tried multiple different Dell power adapters. My Dell... -
hi everyone,
need some advice i am not professional just junior , but maybe someone could help me please
i have
Device : Laptop
Brand : DELL
Model : LATITUDE 5410
Board Number: FDZ41 LA-J371P Rev:1.0
i am attaching schematics and board view
my problem is its not turning on , i follow the video with a similar board of dell 5400 in youtube ,as i said i am not pro, i am getting 19v true the first 2 mosfets which is pq9 and pq4 then i went to check what i am getting on current sense resistor pr700 and i am getting 19v too from there i moved to...Today, 02:24 PM
Comment