Question about HP 418446-001 - HP Special Edition L2000 Series Full Featured Laptop Systemboard for

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My L2000 notebook loses power right in the middle of using it. Now i cant get it to power up with or without the battery plugged it or with AC power.

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  • weboss Jan 07, 2009

    This has happened to me twice. I could not get the first laptop to work again. I bought another L2000 and the battery was dead, Plugged power in the unit started to boot; and then it went off and will not charge or power on. It is not the charger, I have 3 chargers and 2 batteries, The problem is internal.



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Sounds to me like the charger board has gone bad.

Posted on Dec 16, 2008

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Gateway id49c notebook power issues


http://support.gateway.com/s/notebook/2010/gateway/id/id49C/ID49Cnv.shtml

1) Test the AC adapter (Charger) first.

http://www.itsbattery.com/gateway-ac-adapter/Gateway-ID49C-AC-Adapter.html

Test with a multimeter.
(An economical multimeter can be purchased for as little as $5 to $12. Available in a multitude of stores. An auto parts store is but one example. Checkout aisles of major discount stores, may have them on the rack)

Function knob set to DC Voltage.
(If just a symbol the symbol is a dotted line over a solid line)
If more than one DC Voltage scale set it to the 0 - 50 Volt scale.

Positive (Red) probe lead of multimeter goes to the Center Hole, of the plug end that plugs into the laptop.
Negative (Black) probe lead touches the cylindrical metal shell, on the outside of the plug end.

You should be reading 19 Volts DC.

Also have an assistant gently wiggle the cable from AC adapter to laptop, and power cable to AC adapter (Charger)
Fluctuation in the reading means you have broken wires.

AC adapter checks out OK?

2) DC Power Jack:

The DC Power Jack is the jack on the laptop, that you plug the AC adapter (Charger) into. (DC_IN)

Battery removed, (And AC adapter, 'natch), use a No.2 pencil, and with the eraser, gently see if you can move the Center Pin around.
ANY perceptible movement means damage to the DC Power Jack, and replacement.

3) AC adapter and DC Power Jack checks out?

Problems with the Power MOSFETs used in the power section, on the motherboard, or possibly Ceramic Capacitor failure.
(Multi-Layer Ceramic Capacitor, and they are Surface Mount Devices)

Using the HP Pavilion dv6000 series, and Pavilion dv9000 series of Notebook PC's, as an example,

http://mayohardware.blogspot.com/2010/04/important-parts-on-dv6000-and-dv9000.html

Looking down at the second photo with the Alpha and Omega Semiconductor - AO4407 - Power MOSFET circled in Yellow, look at the small rectangular shaped object to it's Right. Has a wide dark band on it.

This is a Ceramic Capacitor.
There is one above it of the same size, one above that one, and one to the right of the top one.
If any one of these, or the Power MOSFETs are blistered, blackened, or bubbled, they need to be replaced.

Due to issues that could arise by replacing, and having more components be bad, or go bad; the logical choice by most tech's is to simply replace the motherboard.
(Also puts more dinero in their pockets)

[ Your user name reminds me of Hee-Haw. "If it wasn't for bad luck I wouldn't have any at all." Lol!

Hey...........it's going to get BETTER! ]

For additional questions please post in a Comment.

Regards,
joecoolvette

Oct 16, 2012 | Gateway mb.wq502.001 - Id49c Intel Laptop...

1 Answer

Samsung n145 will not power up


Related to a Samsung Np-n145 Notebook PC:

Plug the laptop into power for 24 hours. See if the Battery charges up.

Next test, or have tested, the AC adapter (Charger) See if it is putting out 19 Volts -> DC.
Know someone with a multimeter? I can guide you in testing.

AC adapter is good? Things go downhill rapidly here.
The next problem could be a DC Power Jack.

The DC Power jack is the jack on the laptop, that you plug the AC adapter into,

1) The DC Power jack may be broken
2) The solder joints holding it to the motherboard may be cracked. Poor connection to motherboard.

The DC Power jack can be replaced, or it's solder joints re-soldered.

DC Power jack proves to be okay?

Power MOSFET's have gone bad. The next link, is an article that deals with bad Power MOSFET's in an HP laptop. Used for an example,

http://mayohardware.blogspot.com/2010/04/important-parts-on-dv6000-and-dv9000.html

Let's hope it's a bad AC adapter

Regards,
joecoolvette

Jul 18, 2012 | Samsung Notebook Np-n145 10.1" Laptop...

1 Answer

I am attempting to bring an acer 5920-6864 back to life for a friend. I found and fixed a broken wire in the positive (red?) side of the power lead that runs from the AC adapter plug in to the...


Is the powerpack light on?
Does it stay on when your plug it into the moterboard?
Is the light on to indicate that the computer is plugged into the charger?
If all of the above is in order then take the battery out and see if the computer runs directly from the adaptor without battery.
If so then replace battery pack and see what happens.
If not, then there is still a problem or two with the mother board.

Oct 06, 2010 | Motherboards

1 Answer

HP Compaq laptop won't charge/power from AC due to blown fuse


First of all there are no fuses in a pc's motherboard, whatever the type.
In your picture the apparently faulty part is a filtration coil (L1 - the L refers to an impedance/coil) situated on the power like coming from the Jack1  - where the charger plugs in.
If your laptop :
1 - works just fine with a battery
2 - doesn't power on when plugged in the mains and without without the battery
3 - doesn't charges the battery
then , since the charger is good, the power circuit is cut after the the plug-in power jack, on the motherboard.
Use an ohmmeter to test the power circuit for continuity, starting from the jack.
So yes your busted impedance is most likely the failed part. Jumping it would fix it, but will leave the laptop without any protection against parasites coming thru the power line - use it from now on only plugged thru a surge protector at least an off line UPS at best.

Jun 03, 2010 | Intel Motherboard

1 Answer

How to replace hard drive


Hi tstafford,

Before you begin any removal or installation procedures:
1. Shut down the notebook. If you are unsure whether the
notebook is off or in hibernation, turn the computer on,
and then shut it down through the operating system.
2. Disconnect all external devices connected to the notebook.
3. Disconnect the power cord.
4. Remove the battery pack by following these steps:
a. Turn the notebook upside down with the front toward you.
b. Slide and hold the battery release latch 1 to the left.
(The front edge of the battery pack disengages from the
notebook.)
c. Lift the front edge of the battery pack 2 and swing
it back.
d. Remove the battery pack.
NOTE:
Reverse the above procedure to install the battery pack.

5. Loosen the two PM2.0×6.0 captive screws 1 that secure the hard drive cover to the notebook.

821796e.jpg

6. Lift the right side of the cover 2 and swing it to the left.
7. Remove the hard drive cover.
5. Grasp the mylar tab 1 on the hard drive and lift the hard
drive until it disconnects from the notebook.
6. Slide the hard drive 2 to the left and remove it from the hard drive bay.

1b7a96c.jpg
7. Remove the four PM3.0×4.0 screws 1 that secure the
hard drive frame to the hard drive.
8. Lift the frame 2 straight up to remove it from the hard drive.
9. Slide the hard drive connector 3 off the hard drive.

See Below: Reverse the procedures to install:

d1b4712.jpg

Good Luck, and don't forget to leave a rating.

Thanks

Mark

Oct 17, 2009 | HP 418446-001 - HP Special Edition L2000...

1 Answer

Mb have power but not start...


Hi, good day sir, there are several things you should do first.
1. Disconnect all connections to the motherboard.
2. make sure that your Power Supply 4pin 12volt molex and 24 pin molex connectors are tightly plug.
3. Clean the memory port from any dust, plug the RAM module, make sure also the module connector is clean.
4. Plug in the speaker and power switch.
5. Connect a VGA monitor.
6. Reset bios/cmos or simply operate the pc without the battery.
7. Plug the Power Supply to AC mains.
8. test the PC.
9. do this several times if you cant start the PC.
10. if every thing is OK, reconnect your PC and peripherals one at a time.
Hope this helps.keep me inform about your progress. thanks

Jul 30, 2009 | Intel D945GTP Motherboard

1 Answer

Hp paviilion will not power up


try removing the battery and switch on your notebook using the ac adapter only if it works then i think you need a replacement for the battery or you can try to power cycle your notebook i hope it applies to hp notebooks coz it works all the time with dell vostro. to power cycle: unplug/remove ac adapter, battery, usb devices (mp3, ipod, printers, etc) optical drive, network cable then press and hold the power button not less than 10 seconds then put everything back except for the usb devices and network cable if it works then you can plug everything back again.

Jul 11, 2009 | HP VECTRA VLI8 P3 Motherboard (KZM6120)

1 Answer

HP L2000, loses power / will not power up.


Just double check the memory is attached properly and generally check all equipments by removing and replacing it properly in their slots. If any one of is slightly loose then this type of behavior is often noticed.......sodeep

Jun 12, 2009 | HP 418446-001 - HP Special Edition L2000...

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