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Saturday, February 13, 2010

how to fix dv9000 No Video, dv9000 Penny Fix, BGA Re-Flow

How to Fix dv9000 No Video No Wireless issues Nvidia Video Chip Separating from the system board.

Copper shim, bga re-flow, no video fix hp DV9000.

This will also give you symptoms of no wireless connectivity or loosing the wireless card.. or the system will loose the dvd/cd rom before the chip will entirely go out ... lots of different problems can be attributed to this issue .. they all have something to do with the Nvidia Chipset. Also will exhibit 3 beeps and no video, or continuous power recycle with no video, or turn on and shut down 5 or 10 seconds later.

How to Fix No Video issues with a Penny??? Spend a penny save 350$ dollars??


Did you want a video .... read through the post and check the end for how I did it ...

This issue affects HP Pavilion dv2000, dv6000, dv9000, tx1000, Compaq Presario V3000, V6000, and Compaq F700 Series notebooks.





Directly from HP's web site
HP has identified a hardware issue with certain HP Pavilion dv2000/dv6000/dv9000 and Compaq Presario V3000/V6000 series notebook PCs, and has also released a new BIOS for these notebook PCs, version F.39 for dv2000/V3000, and version F.3D for dv6000/dv9000/V6000

The first thing you should do if you are experiencing these issues is
to go directly to HP's Website and see if you fall under their extended limited warranty just click on the link I have provided for you.

Now if you are not covered under warranty any longer ... HP will help you at a cost .. it could be over 350$ dollars plus shipping and handling. With that type of cost you may as well just go out an purchase a new computer.

If you really decide to buy new SEND ME YOU’RE OLD DEAD COMPUTER I WILL TAKE IT!!!!

****Warning CYA stuff again this will void your warranty (if you still have one) and can render your laptop useless if you do something wrong if you are not comfortable taking this or any electronic product apart have a qualified Service Technician do if for you I take no responsibilities if you decide to this your self. There is always a risk of electrocution as well capacitors can retain a charge and the power supply as well as the battery should be removed when any repair is made. (have to do this warning just a CYA thing) OH BTW DON'T DO THIS (ok that should cover me)********

But you can follow the previous posts dv6000 disassembly Part 1 and Part 2.



Also there is a guide here for the DV9000 series 17" laptop tear down




DV2000 series Tear-Down guide can be found here.


After Part 4 of the DV9000 post or the last post of the other DV tear-down guides, you will have access to the system board ... you will need to take off the Heat Sink and fan assembly if you have made it this far you should be able to do that with no problem.. as well I would remove the (AMD / or Intel) processor from the ZIF socket.. and you will have this.


These are Actual pictures of the DV6000 system board so your will look a little different ... but rest assured this has been tested to work on several dv9000 system boards.





The chip that is causing the problem is circled.... that’s the Nvidia Video Chip. *** NOT the NVidia Nforce chip set... It is the Nvidia Video Chip that is causing all of the problmes. ***

To be honest it is not Nvidia's issues don’t blame them it is actually the manufacturing process of the system board that is at fault the chip is fine and works great. During assembly the chip is attached to the system board via BGA soldering (Ball Grid Array) because of the heat generated by the video chip if heat is not wicked away properly and the proper amount of flux that was used the small solder joints under the chip will melt and eventually separate and no longer have contact between the chip and the system board.

As you were taking the Heat Sink off you may or may not have noticed the little squishy pad on the heat sink that was covering the video chip. IMO here is your first problem. As the system heats up over time this little pad expands and contracts it has some stickiness factor to it and will pull on the chip as it contracts when it cools.. this could be pulling the solder joints away under the video chip.

Regardless of if you are having the video issue or not this needs to be replaced.

*****Rant in my life time things have been fixed with bubble gum, bailing wire, and the almighty Duct Tape. Don't laugh at anything I will put in these blog postings... they work and have been tested repeatedly.... *********

With that said the best replacement for that pad I have found is a piece of copper with thermal paste applied to both sides to conduct heat away from the chip to the heat sink.. This will ensure that there is no flexing or expanding or contractions to break the solder joints.

So where can I find a piece of copper that will fit under there??? that is the right size?? Odds are pretty good you may have one in your pocket or in your change jar at home...

It's a Penny

Not just any Penny though it must be mostly cooper Penny.

Bit of History here the U.S. Mint in 1983 started making pennies with 97.5% Zinc with copper plating. Previously 1982 and earlier the pennies were made with 95% copper with the remaining 15% of Zinc and other metals.

Zinc will just not do so find an older penny and use it.

*** Yep another Warning ... Defacing US currency is indeed illegal.
According to:
United States Code
TITLE 18 - CRIMES AND CRIMINAL PROCEDURE
PART I - CRIMES
CHAPTER 17 - COINS AND CURRENCY
333. Mutilation of national bank obligations
so don't do it******

The surfaces of a penny are pretty smooth and may make enough contact to conduct the heat desired to the heat sink or use something else similar sized that you can sand and lap to a smooth finish. And just using a penny will not deface it and after the computer has finished its usefulness you can still use the penny.

*** Rant what about those machines you find in the Museums that mash pennies with a picture or advertisement.. Is that not defacing U.S. Currency????? end of rant ****





Here is a close up of the video chip it self.. for some reason or another HP made different revisions of the same board yours may look a bit different.. The red silicone was an attempt on their part to eliminate the separation issues but this will not help if the heat sink pad is not removed and replaced with something else.

Do not try to remove the red compound that has been placed around the video chip.. it is very hard and you may end up damaging the system board in the process. This procedure has worked with the red compound intact and on boards that do not have the compound.

HP also adjusted the BIOS with a flash that will keep the fans running to wick heat away that also proved to be ineffective IMO as well.

Ok now that you have the board out and know why ... How do we fix it..

Well the most permanent way to fix your issue is to send the board out for Re-Flow... there are numerous companies out there that will do this for you usually the cost is 50$ plus shipping and handling. You can find them on Fee-Bay (E-Bay) or you may be able to find a circuit repair shop in your local area ... Google it..

or

There are 2 ways you can do it at home... ****Warning ... eh you know already ... never mind*****

This may be a temporary fix may or may not hold for long but worth a shot

If you have removed the memory ... which you really did not have to, to get the board out. Put it back in





Remove the pad that goes between the heat sink and the video chip ... now you definitely will see a gap between the chip and the heat sink when you reinstall the heat sink ... make sure you use thermal paste on the processor.. We don't want to damage that... BTW clean all the hard gooped up thermal compound they used its crap.. use Artic Silver the best stuff.. Connect the fan so you know it’s on.

Reconnect the Power Cables. Flip the board over place the LCD panel flat and close enough so you can watch it.

Find the Quick Launch Bezel and just attach the ribbon cable for the power.. it is the left ribbon cable.

Plug the computer in ... and turn it on ... you will still get either the beeping or no video ... let it sit.. ON for a bit less than 2 or 3 min.

Turn it off ... immediately turn it back on ... wait for it .... wait for it ... did it post? if not try again for 5 min.

If it did ... and you see the wonderful HP logo ... shut it off .. disconnect the power, the Quick Launch ribbon cable and the LCD panel flip it back over take the heat sink off ... put your piece of copper on top of the video chip (with thermal paste) reattach the Heat Sink flip it back over reattach everything and test it ...

is it still posting??? re-assemble and use

Now a more permanent fix or if none of that worked.... requires a Heat Gun, another bit of metal about the size of a Quarter .. (funny how useful money really is) and a bit of silver solder.

put the metal on top of the video chip directly with a bit of wound up solder on top so it won't blow away .. usually uses a glob of artic silver to conduct the heat between the chip and the metal.

*** Some Folks are confused as to what does the Quarter sized piece of metal and the silver solder do. Well this is my (back yard mechanic) attempt at gauging the heat that will be transferred to the video chip and the BGA below the chip. If the metal on top gets hot enough to melt the silver solder odds are good that the chip is getting hot enough to melt the BGA and effectively re-joining the chip to the system board. ***

Be very careful ... it will take a blink of an eye to melt plastic components surrounding the video chip.. so stay away from them with the heat gun.. this is a delicate process again DO NOT DO THIS but if you chose to it's your computer not mine.

You would be better to send it out to a certified Re-Flow company.

*** Before you start with the heat gun there is plastic (wrap for no better explination) sheilding all over the system board .. carefully remove anything that will melt and create a mess and bad smell. Just make sure you put it back where it was after you are done. ***


Start by heating the chip side about 5 inches away from the board for bout 30 seconds .. Depending on how hot the heat gun gets..

you should have it close to a ledge so you can do the same to the bottom side.. 30 seconds or so ..

Then start on the chip again. make sure the board is flat and level at this time. moving the heat gun closer ever 10 sec or so .. till the solder melts... if it melts too quickly you just got the heat gun to close to fast .. but just hold it there for another 30 sec to a min.. pull back for about another 30 seconds at 5 to 6 inches ...

Let cool.... for 30 min or more ... and test .. Just like above... if it works reassemble with your copper between the heat sink.. and your computer can be used... Waaahooo.

Donations are always accepted











11 comments:

Do you also use thermal paste on the nforce chip??

I cleaned my laptop and change the paste to article silver and no i dont have video image, do i have to reflow?? thanks in advance

I usually leave the nForce chip with its thermal compound I don't change that out.

If you are not getting video now after tearing the laptop apart I would double check all of the connections before re-flowing the chip and if every thing is fine there you may have to go through the re-flow process.

Hello, its me again. I reflowed the GPU and its up again, but know every time it boots and when initializing windows display blue screen... any ideas??

Boney,

Have you tried booting in to safe mode after the HP logo screen hit F8 (function key 8) chose safe mode and once in the OS chose reboot. that may help .. other wise you may have corruption in the OS

UN-FREAKING BELIEVABLE! I can't tell you how much you rock! Everything started happening about 3 days ago...I consider myself computer geeked out as I used to build my own desktops and I took this one apart last year to see how she ticked, but I could not figure out what the deal was...The only thing I knew was that something bad was going down as it would shut down randomly (BSOD)...Then Sunday hit, and BAM! Dead. Nothing but a black screen with flickering...I am in medical school with 2 weeks of classes left and I assumed I was out 2Gs due to this (this comp, dv9500 CTO cost around that). Well, I came across your site and gave it a go...And, I can say that I've had her up ALL DAY and I swear that this thing is cooler than baby bottle milk! So, for all those wondering - IT WORKS. I used thermal grease and TWO 1974 pennies as this model is diff than the dv9000. I donated $10 because even if it goes out again next week, I was still able to get it running and transfer files I wanted to an external. NOTE! Due to constant taking apart I lost my keyboard to the battle, so this is NOT for the inexperienced and if you are a newb, TAKE YOUR TIME! Im running a USB keyboard, but I could care less thanks to CE!!

I forgot to mention my specs...according to PC Wizard 2010 I am running at ~ 49 degrees on GPU (NVidia 8600M GS...With 720P .avi playing on Windows Media, Firefox open, and Outlook 2007 - 54 degrees C is where it leveled off! AMAZING!

I have 2 motherboards that i fixed, anyway 1 of them works just fine, had the computer up for 2 days now, but the other motherboard just work for a couple of restarts then its black again, maby i dont come up in the right temperature when i heat it up, i dont know.

If I was a woman in a fertile age, I would gladly bear your children so they would spread more wisdom.

I fixed a dead DV9000 a few minutes ago and I have a couple other dead netbooks and laptops that will get the same treatment.

You sir, rock.

Thanx workt great for me to! Can't belive that i had have this notebook in my basement for two years now. But now is it running again!

I work at Notebook Tek in NY we get a lot of machines to reflow that are damaged from people melting their boards and also from people using new pennies. So head the warnings of this post about zinc pennies and risks of ruining the board. I love this post by the way great information. If any body needs a BGA reflow check out our site at www.notebooktek.com we do them all the time. You can alway call us also if you have any questions. Too bad HP wouldn't just fix all of them for us.
Frank

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