Question about Dell (8N816) Motherboard

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Power Supply Issues

My Dell Inspiron works perfectly fine on the dock. When I use it away from the dock, though, the power "comes and goes" and the screen flashes dim then bright repeatedly. Eventually I see that my battery is not charging. I have replaced the external power cord and that doesn't seem to help.

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  • khaygood Jan 27, 2009

    Thanks. The problem is not with the dock. It never leaves my desk at work and the laptop works perfectly fine on the dock. It's when I use the "cord" power supply away from the dock. And it does the same thing no matter where I plug it in. However, you have posed an interesting issue. The dock DOES have a "grounded" plug, while the portable cable does not. Hmm

  • Qabal May 11, 2010

    If you move/wiggle the plug around, where it goes in to the back of the computer, can you get it to start charging again?

  • ROD GANDY May 11, 2010

    NEED MORE INFO.

    I AM THINKING THIS MY BE A GROUNDING ISSUE, NOTHING YOU DID BUT DELL CONFIGURATION, TRY PLUGING THE DOCKING STATION SOME WHERE ELSE, DIFFERENT HOUSE OR BUILDING, IF SAME RESULTS

    THE SYSTEM IS SETUP A GROUNDING THREW THE DOCKING STATION, WHEN YOU PLUG INTO ANOTHER OUTLET THE GROUNDING IS NOT SETUP PROPRLY IN THE ELECTRICAIL SYSTEM, THAT MAYBE A SAFTY ISSUE AND YOU MESS WITH IT AND YOU MAY NOT GET COVERED UNDER WARRENTY SERVICES IF YOU HAVE NO WARRENTY ISSUES THAN YOU WILL HAVE TO PAY SOMEONE TO HELP YOU SOLVE THIS ISSUE DOWN THE ROAD.



    CANDYMANGANDY

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1. try having your battery's health checked by an authorized dell service center.

2. if your battery pack is over 3 years old, there is a possibility that it already needs changing.

Posted on Apr 09, 2010

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The most common reasons are the battery, power jack and power adapter/cord.

Power off and remove the battery. If the laptop powers on with just the adapter connected, your battery is faulty.

If you move/wiggle the power adapter at the point where it connects to the laptop, and the power goes off and on, the power jack is the problem.

The power jack is inside the laptop and either needs soldering or replacement.

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Try this, with laptop removed from docking unit:

1. Press and hold the laptop power button down, for 10 seconds.
2. Now remove the battery
3. Repeat step one above
4. Let the laptop sit for 10 minutes.
5. Reinstall the battery
6. Make sure docking station is unplugged, and insert laptop into docking station.
7. Plug in power supply (to dock)
8. Start the laptop.
9. IF IT STARTS, let it run a while to see if the battery is charging
10. Remove it from the dock and repeat steps 1-5 above and then go directly to 8 (start without connecting dock).

CONCLUSIONS: If the laptop started in the dock on step 9 but not 10 (only on battery), your battery or power regulator circuit may be damaged. However, if it starts in step 10 but not step 9, your docking station -or its AC power supply may be damaged Let me know how this comes out, please.

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