Question about Computers & Internet
An expert who has achieved level 3 by getting 1000 points
You have already diagnosed the;
A) AC adapter (Charger)?
1) You have taken a multimeter, set the Function knob to DC Voltage, and tested the AC adapter to see if it is putting out 18.5 Volts? (DC)
2) You had an assistant gently wiggle the power cord to the charger, AND the power cable from the charger to the laptop?
Diagnosed to see if there is an intermittent reading due to broken wires?
B) Checked out the DC Power Jack that the AC adapter plugs into?
(DC IN)
{ It's a DC Power Harness. The jack has a cable with a connector on the end }
Jack is in good condition? Center Pin doesn't move, outer metal shell doesn't move?
DC Power jack solder connections are good, not cracked?
Then you are looking for the power sensor chipset. It is a power MOSFET,
http://en.wikipedia.org/wiki/Power_MOSFET
This is one that is used in a LOT of laptops,
https://docs.google.com/viewer?a=v&q=cache:oER5NNz8cwcJ:www.fairchildsemi.com/ds/FD/FDS6675BZ.pdf+Fairchild+FDS6675BZ&hl=en&pid=bl&srcid=ADGEEShOhWPjm_M-ROHme4iEMrztCTOd-28jNiy1hVLQQh_VOyv8zcXEVDB_iTQA6MuZO88UmRkDgjyW9j4CP2aIJ-4DS-h6JNM3lvxldeApQeecmz_DADCw1s7tmNLxfPknqX14SZP6&sig=AHIEtbS_rYUAeo_8rB9YHkW05ZjLqeH4Jg
Service Manual,
http://h10025.www1.hp.com/ewfrf/wc/manualCategory?cc=us&lc=en&dlc=en&document=&product=4210321
The HP G42-210(?)BR Notebook PC is part of the HP G42 series of Notebook PC's.
In the list click on the file name -
Compaq Presario CQ42 and HP G42 Notebook PC - Maintenance and Service Guide.
This is a PDF file. It may take up to 30 seconds before the first page comes up.
Regards,
joecoolvette
Posted on Feb 07, 2012
Out of my league FraMauro. I also do not believe the circuit is available to the general public, but that is just MHO. If you do figure it out, and receive the schematic/s, post back. Regards, joecoolvette
×
Hi,
A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!
Posted on Jan 02, 2017
Mar 05, 2011 | Intel Motherboard
Apr 03, 2010 | HP Pavilion zd8000 Notebook
Jan 11, 2010 | Acer Aspire 5315 Notebook
Jan 04, 2010 | HP Pavilion dv2000 Series Laptop Full...
Nov 08, 2009 | Computers & Internet
Jul 25, 2009 | Computers & Internet
Apr 16, 2009 | Computers & Internet
Dec 06, 2008 | 2007 Yamaha V Star Custom
Jun 20, 2008 | Compaq Presario R3000 Notebook
141 people viewed this question
Usually answered in minutes!
The external power supply is ok, with 19,5 Vdc.
The connectors are good and checked it.
The first integrade, the power converter to 5,0V and 3,3V dc is ok and have two control pins to start the convertion are ok too.
The dual color led in input connector have two mosfet in control. When I put 3V in gate, these leds are on.
The problem is betwen these lillte mosfets and the electronic circuits near battery connectors. I dont find the electronic schemmatic for this motherboard.
Thanks again and sorry my english.
FraMauro
Thanks joecoolvette, lets try always.
×