I spotted a 2-phase V.R.M. made by Delta on Dell P4 mobo ... V.R.M. input uses Chemicon KZG 16v/1800u whereas the output uses Rubycon MBZ 6.3v/2200u. A black anodised heatsink is attached to the back of VRM PCB (MOSFET switches).
Delta V.R.M. on Dell P4 Mobo
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by BowlineMy 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... -
This specification for the MSI Delta DELTA 15 A5EFK-008 Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the DELTA 15 A5EFK-008 boardview and DELTA 15 A5EFK-008 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,...09-07-2024, 03:40 AM
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Hi, everyone. First post of an actual repair. I'm a technician but a complete newbie with laptops.
So I got this Dell Inspiron to play with.
No charger, so I connected to my bench PSU.
The laptop also didn't include: hard disk (I added one of my own for testing, see below) and wireless PCB (but I doubt this could have anything to do with this particular failure).
------What it did (and didn't do)------
1) I turned it on and it powered on. Powered down in 2 seconds by itself.
2) Removed RAM, changed slot. Same... -
by mrsithHi guys,
I have a friend's Dell 3779 that came to me with severely shorted mobo. Did not manage to isolate the cause, most likely that was a bga shorted. Went for a replacement motherboard. Got one from China, apparently it's been tested prior to shipping. The mobo starts up normally but I am getting no display whatsoever.
Tried using external monitor, but being blind I am not sure if laptops goes as far as booting to Windows, a d without it I cannot get hdmi to work. Can't see boot menu options to make sure it boots to Windows. Went ahead and did a blind bios update,... -
by Dynamite76Recently I got a DELL PSU from a presision T3600. It is a 635W PSU which went out with a bang and some black smoke
. The model of the PSU is a D635EF made by DELTA.
The cause of the bang was a blown. TNY280PN Chip. How ever as a result or as a causo also two SMD resistors are smoked. I have been able to replace the TNY280 Chip but I do not know the values of the resistors. The resistors are within the Drain line of the TNY. I can not find the schematic of this PSU. THe resistor are Open Loop and on the voltage accross them is about 330V. (EU)
Any suggestions for... - Loading...
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