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Athlon HP won't power - NOT AC adaptor or DC jack on board.

I have an old Athlon based Hewlett Packard which came across my work station with a puzzling issue.

It won't power up at ALL - The AC to DC adaptor works fine, and checking the terminals in the mainboard - I get the 19VDC, aswell as if I check from the tip connector to an earth position on the chassis.

No lights, nothing at all.

The battery has charge, it's GETTING charge but nothing else.
Fan doesnt spool up either.

Oh and I get voltage across the solder points on the power switch on the other side of the board.


VERY puzzling!!!

please help!

Posted by on

  • brodieman23 Feb 26, 2009

    Hi - I checked what I thought was the internal fuse (has ET 5A written on it). It has continuity. Attached is a pic to see if you can clarify if im testing the right component.
    SORRY ABOUT MR BLURRY CAM! - I dont have a good cam with me let alone one with macro zoom




  • brodieman23 Feb 27, 2009

    Oops - I just noticed a major error - the computer is a Packard Bell not a HP (stupid mistake dammit).

    Looked everywhere else on the mobo for other fuses - but cannot find. Just to be 100% sure im gonna resolder the DC jack and a few others (including mounting a M205 5A glass fuse onto the exposed board) just to see what will occur.


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  • 4,234 Answers

There are small rectangular surface mounted fuses inside on the motherboard that may be open. These will be small and white with the circuit designation Fxxx written on the board. Look for these first and check them.

Update this with what you find.

Dan

Posted on Feb 26, 2009

  • ABRsvcs Feb 26, 2009

    There is probably anothr located closer to the fron of the laptop as well. Look for that one too.



    Dan

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I have a Dell Inspiron 6000 that just turned two years old.

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This lasted only a short time until my Dell Inspiron 6000 batterywouldn’t charge at all for long periods of time, and sometimes thecomputer wouldn’t turn on, even if plugged into the wall. I thought itmight still be the adaptor, so I borrowed a fully functioning 90W Delladapter from a family member to test the system. This worked better,but still not great.

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The problem is with the jack on the motherboard inside our Inspiron 6000’s. This is the jack you plug your power plug into on the back of the laptop.

Somehow the jack gets worn and does not make correct contact withthe laptop so the Laptop does not see the power supply as a legit Dellbrand. So the powersupply will not charge the laptop battery and run the laptop at the same time.

DC power jack repair guide. Do-it-yourself instructions.

Modern laptops are all sold with built-in wireless laptop ac adapter.Some power notebooks used by corporate road warriors will have powerfulcellular adapters that connect the laptop to the Internet via the cellphone infrastructure

A bad connection between DC-IN power jack on the system board and the system board is a very common problem with dell pa 12,dell e1505 and Dell Inspiron 6000notebooks. If your laptop is out of warranty, then you can fix theproblem by resoldering DC-IN jack on the system board. If it’s stillunder warranty, it would be fixed at no charge to you. Problem symptoms:
93-06070-002_replacement-dell-pa-12.jpg
  • Laptop randomly shuts down without any warning.
  • Power LED and battery charge LED start flickering when you wigglethe power cord or the AC adapter tip on the back or your laptop.
  • The battery will not get charged.
  • When you plug ac adapter for laptop, the laptop appears to be dead and there is no LED * activity at all (DC-IN jack on the system board is broken).
To fix the problem, you have to take your laptop apart, remove the system board to resoleder or replace the DC-IN jack. dell pa 12 and Dell Inspiron 6000 disassembly guides will help you to remove the system board. Take a closer look at the power jack on the system laptop board witha magnifying glass. In most cases you get the power problem because ofa bad connection between the DC jack and the system board, you’ll see acrack between the DC jack connector and the system board.

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Bad dc jack or motherboard?


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Loose ac adapter port laptop


if you are pointing about the loose dc power jack adapter, i suggest you have to take it to the shop for repair. it's either you have a faulty adapter, or one or two pin doesn't have contact. usually negative contacts looses if your power button lights ups, but the MOBO doesn't get the right voltage that's why it doesn't boots up.

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Plugged in not charging


laptop plugged in not charging:

1. Take the battery out of the laptop & try to turn on the laptop using power adapter only. If the computer turns on, then the battery is defective & needs to be replaced.

2. Make sure the power adapter is not defective. Test the output voltage of the power adapter using a voltmeter. Compare the voltmeter reading to the nominal value written on the adapter or the laptop.

3. Make sure the DC jack is not loose or broken. A loose DC jack will need to be re-soldered. A broken one will need to be replaced.

4. If you have another processor which is compatible with your laptop's model, try swapping processors & test to see if the laptop will work.

5. The power button could be bad

6. The motherboard could be defective & needs to be replaced.

http://www.chargerbuy.com/laptop-ac-adapter/hp-ac-adapters.html

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Hewlett Packard Compaq Presario CQ56 power/charge light blinking orange & will not charge. I replaced the charging unit but it is dtill not charging. What could the problem be?


You need to get the DC Power Jack Either Repaired or replaced...this is the "female" port where your AC Power cord plugs into.. To Repair the current DC Jack...First you'll need to look closely at the Positive posts to see that they are not broken.. If visibally ok.. then you can look at the Solder Connections.. they will need to first be Desoldered.. Cleaned, then Resoldered back in place.

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Power in center pin hp g62


What is the center pin??

Would you by chance be talking about the DC Power Jack where the Power Cord plugs into the laptop? If so, then see the steps below if your laptop is not booting and you think the DC Jack is your problem.

Maybe your DC Power Jack which is where the power cord plugs into the computer is bad. Take an ink pen and push the tip inside the jack and see if the little pin wiggles, if so the jack is bad. You'll have to take the laptop apart to fix it. Most times it is soldered onto the motherboard, so you will have to desolder the old and solder a new one.

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My notebook 2133 is completely dead charger is working ok I think its the battery


Hi,

Im very sorry to hear that,For you to be able to isolate the exact problem, try to do these steps. Removed the battery then connect the laptop directly to the power outlet then power on the laptop, if the laptop turn on, that means that the AC adapter is working fine if not, theres a possibility that the problem is with the AC adapter or the DC port on the laptop itself.If the problem is with the DC port on the computer itself,it maybe loose or totally broken, If its the DC port itself, you will need to replaced the Motherboard or lets just hope that its just the Base Cover that needs to be replaced...

Hope this will help...Your response is very much appreciated...

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Charger port works kinda messes up too often


Hi Kentucky664
Sounds like you have a broken pin or loose jack housing solder joints in your DC power jack. This is a very common problem with laptops of all makes and models of laptops.
the majority of laptop DC power jacks are soldered directly to the motherboard, and are not easy for first timers to replace.
Any repairs that you attempt to do yourself are at your own risk, but ive tried to lay this out as easy as possible so you can see what you are in store for.
You are in luck with this if you want to repair this yourself. it can be done, but if you have never disassembled a laptop before i would recommend highly that you familiarize yourself with the
HP Dv9000 service manual
found here
http://h10032.www1.hp.com/ctg/Manual/c01311536.pdf

and with this guided tutorial of disassembly. Just so that you will see what is involved.
http://cegeekbook.blogspot.com/2010/01/dv9000-disassembly-tear-down-part-1.html

Critical-----Proper antistatic measures are strongly advised. Touching the motherboard anywhere but the corners could cause a static discharge, destroying your motherboard.Its also highly advisable to wear a grounding strap while working on this.
Things will come apart, but sometimes it takes patience.

If you still feel up to this after looking over the tutorial, and looking through disassembly section of the service manual, then ive rounded up a short list of parts

if you want the entire assembly, this is the best route to go, unless you enjoy soldering and saving a few $$
This is a drop in replacement for your defective power assembly.

Used $12.99+ $4.73 shipping
http://cgi.ebay.com/HP-DV9000-DC-Power-Jack-Cable-432985-001/220505822432
Refurbished $23.95+shipping
http://tigerdirect.partsearch.com/Part/Hewlett+Packard/Hewlett+Packard/432985001/Refurbished.aspx?ModelMfgName=Hewlett+Packard&ModelBrandName=Hewlett+Packard&ModelNumber=FE695UA
New around $50-$70 depending on source

On another note, a qualified repair shop that services laptops can do the repair for you for between $100-$150. This includes the replacement DC power jack, but not the power assembly that ive listed. A shop will just use your existing power board and wiring. Ive done replacements on a good number of these and they are not as bad to do as the majority of other notebooks.

Hope this helps, and if i've helped you, please dont forget to take the time to rate.

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