Question about E-Machines M6805 Notebook

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Emachine m6805 not coming on, just power & battery lite

I replaced the lcd inverter because of partial blurry screen and computer won't come on. Pretty sure connections are secure

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  • wjohnson4 Apr 24, 2009

    I don't think it's the inverter, At one point I reinstalled the old one, same result. I have the power and battery lites, no fan or anything else. I think its some kind of power problem. I have a voltmeter. tried different combinations (don't know what points are supposed to have voltage) checking tape harness to 'on' button etc. there was no voltage

  • wjohnson4 Apr 25, 2009

    No matter whether ram is out or inverter unplugged, just got the plug lite. Battery is out. No fans. No matter what's done, everything besides lite is dead, no noises or anything. Seems like no power to any components

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  • E-Machines Master
  • 13,433 Answers

Its not turning on at all now? are you sure the issue is with the lcd and its inverter have you tried with a external display and see if you get picture there?

Posted on Apr 24, 2009

  • 1 more comment 
  • Ekse Apr 24, 2009

    Take the battery out and use the power adapter for testing:



    Try disconnecting the display and the inverter etc from the wires that come from the motherboard, Try turning the laptop on, does the fan spin? is the fan connected properly?



    Also try taking the ram out, start without ram, turn off, place the other ram module back in and try starting up again.



  • Ekse Apr 25, 2009

    reseat the cpu disconnect extra not needed devices like dvd drive hard drive etc. motherboard possibly failed would need to do some testing. try disconnecting extra devices and reseat the cpu. try again.



    anything happening at any point aside the power leds? beeps?

  • Ekse Apr 27, 2009

    I would suggest to purchase a motherboard diagnostic card.

    http://cgi.cafr.ebay.ca/Universal-Notebo...



    it will tell us more about the fault. the card should include a small booklet with the listing of codes and their meanings I do have the list here also incase you need help in identifying what error is coming up.

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I have an Emachine D620 5133 Laptop that the screen stays solid white when powered up, any ideas?


No ideas

Just definite facts

Problem is;
A) Graphics chipset
Or.
B) Video Cable
Or,
C) Screen Inverter
Or,
D) LCD screen

Diagnose
LOT of reading ahead.

1) Graphics chipset:

Connect a VGA monitor to the blue VGA port, on the right side of the laptop.

http://www.geeks.com/largePic_all.asp?invtid=D620-5133-OB&pic=D620-5133-OB-box.jpg

This is a general example of a VGA port (Connector), and VGA Cable,

http://en.wikipedia.org/wiki/VGA_Connector

You can use a CRT type of monitor (Looks like a small TV), or a flat LCD screen monitor if it has a VGA Cable.

Turn the monitor on. If a CRT type allow it to warm up
Turn the monitor on.
By factory default settings the display should show on the external monitor.
IF not;

There are at least 3 display options;
A) Internal monitor of laptop ONLY
B) Internal monitor of laptop AND external VGA monitor
C) External VGA monitor ONLY

Press, and hold down on the Fn key, and at the Same time tap once on the F5 key.
The F5 key is the Display Toggle-Over key.

Still no display on external VGA monitor?
Hold the Fn key down again, and tap once more on the F5 key.

No display, (Or solid white), on external VGA monitor, suggests problem with graphics chipset. If this is the problem post back in a Comment.

Good display?
Problem is Video Cable, or inside the Display Assembly.
(screen Inverter or LCD screen)

There are no eMachines D620 service manuals, available on the internet for free that I have seen. Supposedly a few paid for versions, but I have my reservations about that.
(Probably a Generic User Guide, which you can get for free)

I also have never worked on this model yet.

But this isn't rocket science, and this isn't 'my first rodeo'.

2) Video Cable:

The Video Cable plugs into the motherboard, in an area under the Keyboard, and under the Palm Rest Cover.

Judging by;
A) Top View of motherboard,

http://www.ebay.com/itm/eMachine-D620-Motherboard-48-4BC01-011-MBN240100-08226-1-Yukon-MB-/121076931939?pt=US_Motherboard_CPU_Combos&hash=item1c30bf5d63

Set your mouse cursor in the middle of the photo. This enables the Zoom In feature.

Looking at the rectangular metal plate, with the opening in the middle of it; come from the Top/Left corner.

See what appears to be a fairly long white strip?
That is where the Video Cable plugs into the motherboard.

Now here is the D620 with the Keyboard removed. (And Display Assembly),

http://www.ebay.com/itm/eMachines-D620-Motherboard-CPU-base-assembly-/110847874891?pt=Motherboards&hash=item19cf0c574b

Here you see the white connector again.
Middle, and towards the Top; in the small rectangular opening.

The Palm Rest Cover has to be removed, to access the Keyboard Cable's motherboard connector. This connector.

Going on....
The Video Cable then goes up by the left Hinge, and then up into the Display Assembly.
From there the main portion of the Video Cable, connects to the back of the LCD screen.
There is also a separate small cable, coming from the Video Cable; that connects to one side of the screen Inverter.

Example of the Video Cable,

http://www.ebay.com/itm/eMachines-D620-LCD-Video-Cable-50-4BC03-021-/130862506637?pt=US_Video_Cables_Adapters&hash=item1e7803628d

The white connector you see at the bottom, with the black pull strip; is the motherboard plug connector.
The small cable extending to the Right, connects to the screen Inverter.
The large connector shown at Top, connects to the back of the LCD screen.

Just from normal repeated opening, and closing of the laptop; the Video Cable may become pulled on, and/or pinched.
This can cause a loose connection at the motherboard side, or LCD screen side.
Screen Inverter cable connection may be pulled loose also

Can also cause damage to the Video Cable. Stretched/Broken wires

The procedure is to;
A) Remove ALL power. Remove the AC adapter (Charger), and Battery.

B) PHYSICALLY check to see if the motherboard connection is tight. Try to plug in tighter.
Reinstall power. Turn laptop on see if this was the problem.

No?
Remove all power again. This time remove the Display Bezel, and see if the Screen Inverter cable is connected tightly.
At this point it is just going to be a visual observation, and record.

Next is to check the LCD screen connection of the Video Cable, and it may loosen the Screen Inverter connection, anyway.

[The plastic frame in front of the LCD screen is the Display Bezel,

http://www.ebay.com/itm/eMachines-D620-LCD-Screen-Bezel-41-4BC01-001-/300798380595?pt=UK_Computing_Other_Computing_Networking&hash=item4608fb0a33 ]

If plugging the connections of the Video Cable in tighter, does no good; the Video Cable is then checked for continuity.
A multimeter is used, and set on OHM's. (1K)

Electricity is sent through each wire. The reading itself isn't as important, as just seeing IF there is a reading.
No reading indicates stretched/broken wire.
You can take the Video Cable, down to the nearest small computer repair shop; and have the resident tech check it out for a few bucks.

The Video Cable MUST be ruled out as the problem, before going on. Otherwise you may be buying parts needlessly.
(LCD screen? Around $70 to $100. You have seen the price of a Video Cable)

Video Cable proves to be good? Go on.

3) Screen Inverter:

The screen Inverter is located behind the Display Bezel, and mounted to the bottom of the LCD screen. (Screen Frame)

To test a screen Inverter requires a sensitive multimeter. Read fairly expensive,

http://www.fonerbooks.com/test.htm

Do to this, the ease of access to replace, and the general low cost; the screen Inverter is just replaced,

http://www.ebay.com/itm/LCD-Power-Inverter-Board-for-eMachines-D620-Backlight-Replacement-for-Screen-/120819595221?pt=US_Laptop_Screens_LCD_Panels&hash=item1c2168b7d5

If this doesn't repair the problem, the problem is the LCD screen.
Replace.

I can guide you, and I believe step by step; if you wish to attempt repair.
Post back in a Comment.

Regards,
joecoolvette

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Blank screen when powing on, won't start.


Toshiba laptop LCD screen. It is to provide you with high quality laptop inverter replacement. The design of the Toshiba laptop LCD screen is 100% compatible with the Toshiba digital or model manufacturers.


Product Features:
1. Model: Toshiba laptop LCD screen
2. Each test notebook computer LCD screen before shipment, 100% of the working conditions:
3.100% new high quality replacement Toshiba laptop LCD screen
4. Toshiba inverter can be used for the other models and Inverter part No
5. Toshiba the notebook LCD InverterDefective backlight inverter can have the following symptoms:


Screen image, but the power light stays in
Dark display, but still readable
Flashing on and off of the screen between 1/2 to several seconds
The power indicator stays on, but no display and sound
Screen images, but LCD TV still has sound
Picture cycle on and off, as well as high-power LED lights


In good working condition. The best match for your device. High-quality, durable, easy to install. http://www.lcdinverters.net/Laptop-Inverter/Toshiba/Toshiba.html

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