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Motherboard for my emachines g420 doesnt work

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  • 355 Answers

Is their error code is fleshing by your machine?

Posted on May 22, 2009


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EMachines G420 screen stays (almost) black at win7ultim. sp1 startup

and you see post screen???? if so your lcd is ok; after post press repeatedly f8 to enter in safe mode ; if you enter in safe mode it is a driver problem or antivirus problem. keep me post it.

Apr 09, 2013 | Acer Emachines G420 G520 G620 G720 Lcd...

1 Answer

Emachine g420 motherboard diagram

eMachines G420 Notebook PC

Meaning you have the motherboard out, and visually see damage?

I can give you the System Block Diagram of the eMachines G430.
Should use the same components as the G420, but can't swear to it since I do not have a G420 Service Manual. You will know by visually looking.

Scroll the page down to the eMachines E430 heading. (E430 in blue)
Scroll across, and click on G430.

[ Ignore the following if you are aware. This is a PDF file. The computer you are using now has Adobe Reader on it, which uses PDF files.
After you click on the file name, (G430), it may take up to 30 seconds, before the first page comes up.

At the top of the PDF file is the Zoom In icon ( + ), and the Zoom Out icon, ( - )
Zoom In increases the view, Zoom Out decrease the view.

The page number box at the top is for the PDF file. It does Not match the actual number of the Service Manual. If I refer to a page, it is to the PDF file page ]

Go to Page 13.
Increase the view size.
(I am using dual monitors. An HP 2009M that is a 20 inch widescreen, and a RCA EN-V 26 inch HDTV as my main monitor. View size I'm using on it for the PDF file is 150 percent)

1) DC to DC Interface Circuit is on Page 42. (DC/DC Interface CKT)
2) Power Circuit DC to DC is on Pages 42 to 45.
(Power Circuit DC/DC)

Nope. Is not in there. Part of another manual apparently.

There is a Power MOSFET used, however. Do I know what chipset it is?
This is one example of a Power MOSFET used in a lot of laptops,

Another example,

Referenced only to help guide you. Most of the time when one of these babies is damaged, it will bubble on the top, or blacken.

[ Remember, use a Heatsink on each J lead of that MOSFET, when soldering the new one in, ]

I hope your problem is simply a Diode, or two, or the solder joints of the DC Power Jack are cracked. Re-solder if so.
Damage past this point indicates motherboard replacement.

(Hope you are using an ESD wrist strap, and have it's alligator clip attached to a good ground source. Otherwise the motherboard is now a candidate for a Frisbee )

For additional questions please post in a Comment.

May 27, 2012 | Computers & Internet

1 Answer

G420 wont boot windows vista

Yeah because it has its own recovery files and couldnot boot it :)

Feb 04, 2012 | eMachines Computers & Internet

1 Answer

I cant get my sound driver to work for my emachine t1840 all i get is a code 10

incompatable driver, try this one:

if this doesnt work, then your motherboard wasnt made by emachine, and you need to find the brand and model of your motherboard, then find the correct driver from the brands website

Jan 16, 2010 | Gateway Computers & Internet

2 Answers

Is there an audio driver that will work for any sound card?

usually realtek do 99% of audio drivers used on motherboards.. try the realtek site for "WDM" driver. if this doesnt work download a free program called CPUZ and this will tell you what make and model of motherboard you have, with this info you can find the drivers for all components on the motherboard manufacturers website

Jun 08, 2009 | E-Machines eMachines Refurbished EMA...

2 Answers

Emachine doesnt turn on

contact me for support on these computers free of charge at

Jul 14, 2008 | E-Machines (308714) Motherboard

1 Answer

Wont boot up

try to change your RAM,if same also

try to change your graphic card if u use it...

happy trying..

good luck..

Apr 17, 2008 | E-Machines eMachines Desktop PC

1 Answer

Time setting

Here is the current link for the user/instilation manuals:

Try page 8 of users manual for clock.

Jan 19, 2008 | JVC KD-G420 CD Player

4 Answers

Setting Clock for JVC-KD-G420

Here is the link for the manual page 7 Hope this helps :)

Mar 17, 2007 | JVC KD-G420 CD Player

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