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HP dv6 randomly shuts off


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#1 DaveGo

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Posted 23 May 2011 - 04:37 PM

Hi,

I have a simple question. This hp dv6 laptop randomely shut off, and would not turn back on. Only by removing the battery and ac power, waiting about 15 sec, plugging back in, will it now power on.

So, what would be the issue that would retain this ''memory'' to not turn back on till the power is removed?

I have tried everything I could think of. Dissasembled, air dusted fan, tested ram sticks individually...

Any advice is greatly appreciated!

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#2 MrBruce1959

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Posted 23 May 2011 - 08:51 PM

Hello and welcome to Bleepingcomputer. :thumbup2:

I am going to be providing you with several links to web sites that I hope will provide you with more than enough information to help you locate and correct the problem you are facing with your Dv6 laptop.

Brace yourself, I have a lot of info linked below for you to check out without even actually knowing your full DV6 model number, but if you provide that information, I may be able to offer a few more links as well as a fully illustrated service manual. :thumbup2:


This first link is to a download for a series of .pdf documents, it requires both Adobe reader X to view the files and Winrar to unzip the initial .rar zip file.

This is the main link below, but you can click the two links below and jump right to the download, I have scanned both files with MalwareBytes Anti-malware, both came up clean for viruses and malware, although the initial files are supposed to be in two separate downloads, I noticed both downloads appear to have the same documents, perhaps I didn't look throug all of them for differences, but I am providing both links anyways

http://www.eserviceinfo.com/downloadsm/30712/HP_dv6000.html

These two links are direct links to download both .pdf documents

http://www.eserviceinfo.com/download.php?fileid=30712

http://www.eserviceinfo.com/download.php?fileid=30713


All the various links below, are to the same web site, but each describes different disassembly procedures for different parts of the DV6 series laptops, if you examine the links closely, you basically see what each link covers.
After clicking each link, be sure to scroll down each page for images and instructions


http://www.insidemylaptop.com/disassemble-hp-pavilion-dv6-laptop/


http://www.insidemylaptop.com/replace-broken-screen-hp-pavilion-dv6-laptop/


http://www.insidemylaptop.com/fix-video-failure-hp-pavilion-dv2000-dv6000-dv9000-notebooks/


http://www.insidemylaptop.com/remove-replace-lcd-screen-inverter-hp-pavilion-dv6000-laptop/


http://www.insidemylaptop.com/take-apart-hp-pavilion-dv6000-laptop/


http://www.insidemylaptop.com/replacing-keyboard-on-hp-pavilion-dv6000-laptops/


This information below may be useful for the DV6, it depends on what your FULL DV6 model number is

http://www.insidemylaptop.com/disassemble-hp-pavilion-dv6500-dv6600-dv6700-dv6800-notebooks/


Please post that FULL model number for me and let me know what you think of this information I have already provided for you.

Bruce.

Edited by MrBruce1959, 23 May 2011 - 09:02 PM.

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My Career Involves 37 Years as an Electronics Repair Technician, to Which I am Currently Retired From.

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As a Volunteer Staff Member of Bleeping Computer, the Help That I Proudly Provide Here To Our BC Forum Board Membership is Free of Charge. :wink:

#3 DaveGo

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Posted 23 May 2011 - 10:17 PM

First of all :thumbup2: and :thumbsup: !

I greatly appreciate the speed of your reply and the depth you provided in your post. You must've spent a good deal of time in getting all those links.

I wanted to be brief in my previous post, but I'll do a bit more explaining. It's the HP DV6-1247cl.

I have already managed to completely disassemble the laptop. I've used an air duster to blow out any possible lint or dust in the fan, and the rest of the motherboard. I've tried turning on the laptop with as few components as possible. I've tried running linux live off a usb (in case it was a windows issue) , and even ran some cpu and memory testers. I've also updated the bios (hoping it wouldn't shut off in middle of updating, which thank g-d it didn't).

In all cases the laptop at some point or another would suddenly shut off with no warning, no BSOD or anything. In the event viewer logs all I see is an error that this computer has had an unexpected shutdown.

Lastly, what I would really like to know, which I think may be the key, is why can't I turn it it back on right after it shuts off? Why is the only way to get it back on is by removing the battery and power, waiting like 30 seconds then reinserting power?

In other words, what issue would cause the above (in the last paragraph) to happen? Is it maybe a CPU thing that if there's an error it wouldn't let you restart? or RAM?

Thanks for your reply, and please let me know if you can advise me further.

Dave

Edited by DaveGo, 23 May 2011 - 11:03 PM.


#4 MrBruce1959

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Posted 24 May 2011 - 12:44 AM

Thanks for your quick reply and you are most welcome for all the links I have provided for you so far. :thumbup2:

Now that I have your complete model number I want to do some thorough research on your current situation.

Couple of questions I have for you though, have you replaced the laptop battery recently and if you have, can you please post the model number printed on the battery?

Also in regards to the charger/power adapter, what model number is printed on it? Please include Volts and Amps listed on the adapters label as well.

Here is a link to the Hewlett Packard web site for your specific laptop model number.

http://h10025.www1.hp.com/ewfrf/wc/product?cc=us&lc=en&dlc=en&product=3979384

Be back with you shortly, please be patient while I conduct my research. :thumbup2:

Bruce.
Welcome to Bleeping Computer! :welcome:
New Members: Please click here for the Bleeping Computer Forum Board Rules
 
My Career Involves 37 Years as an Electronics Repair Technician, to Which I am Currently Retired From.

I Am Currently Using Windows 10 Home Edition.

As a Volunteer Staff Member of Bleeping Computer, the Help That I Proudly Provide Here To Our BC Forum Board Membership is Free of Charge. :wink:

#5 MrBruce1959

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Posted 24 May 2011 - 12:53 AM

Being that I was speaking about power adapters please read this information from HP at this link.

Performance Problems When Using a Non-Standard AC Power Adapter

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01727443&tmp_task=solveCategory&lc=en&dlc=en&cc=us&product=3979384

Testing and Using the AC Power Adapter

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00363266&tmp_task=solveCategory&lc=en&dlc=en&cc=us&product=3979384


This is why I would like you to post more information for me regarding the power adapter you are currently using.

Please keep in mind this may NOT be what is causing the problem, but it could be and the correct trouble shooting procedure is a process of elimination, and we have to research each possibility in order to finally find the culprit that is causing the issues you are experiencing. :thumbup2:

Also editing in this link here:

Notebook Shuts Down or Restarts Unexpectedly without Displaying an Error Message

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01308794&tmp_task=solveCategory&lc=en&dlc=en&cc=us&product=3979384

Bruce.

Edited by MrBruce1959, 24 May 2011 - 01:13 AM.

Welcome to Bleeping Computer! :welcome:
New Members: Please click here for the Bleeping Computer Forum Board Rules
 
My Career Involves 37 Years as an Electronics Repair Technician, to Which I am Currently Retired From.

I Am Currently Using Windows 10 Home Edition.

As a Volunteer Staff Member of Bleeping Computer, the Help That I Proudly Provide Here To Our BC Forum Board Membership is Free of Charge. :wink:

#6 DaveGo

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Posted 24 May 2011 - 01:42 PM

have you replaced the laptop battery recently

Nope, it's still the original. The AC power adapter is also the original.

what model number is printed on it? Please include Volts and Amps listed on the adapters label as well.

It says HP Part number: 563552-002
I've attached a picture of the label for all the info.
Attached File  ac label.jpg   439.27KB   5 downloads

Now I have tried running the laptop with just the AC power (without the battery), and then just the battery (fully charged), without ac power. In both cases it would still unexpectedly shut off at some point.

Thanks again for your help in this. :clapping:

Edited by DaveGo, 24 May 2011 - 01:44 PM.





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