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In this guide I explain how to disassemble a HP Compaq 6730s – 6735s notebook and remove the cooling fan which is mounted under the motherboard. Basically I will take the whole notebook apart and remove all internal components one by one.
Why wouldn’t HP make a door for the cooling fan? Why should it be so complicated to replace the cooling fan?
Let’s start to disassemble the notebook.
If you need new replacement parts for you HP Compaq 6730s-6735s notebook, you can find them here.
STEP 1.
Remove the battery.
Remove covers from the hard drive, wireless card and memory.
STEP 2.
Remove one screw securing the DVD drive (red circle) and pull the drive from the notebook.
Remove memory modules (in my laptop I had only one module installed).
Remove the hard drive, you’ll find details instruction on the sticker glued to the hard drive caddy.
Unsnap two antenna cables from the wireless card. Remove two screws securing the wireless card (green circles). Remove the wireless card.
STEP 3.
Remove five screws securing the switch board cover (red circles).
Remove two screws securing the laptop keyboard (green circles).
Remove eleven screws securing the laptop bottom cover (yellow circles).
STEP 4.
Lift up the switch board cover. You can separate the switch board cover from the bottom cover with a piece of soft plastic. I’m using a guitar pick.
Be careful, the switch board cover is attached to the motherboard. Do not pull the cable from the connector yet.
STEP 5.
Lift up the keyboard and place it on the switch board cover so you can access the keyboard cable connector.
The keyboard is connected to the motherboard via a flat ribbon cable. Before you pull the cable and remove the keyboard, you’ll have to unlock the connector.
On the picture below you can see the keyboard connector unlocked. Now you can pull the cable and remove the keyboard.
STEP 6.
After the keyboard has been removed, you can release the switch board cable and remove the cover.
STEP 7.
Remove four screws securing the notebook speakers.
Unplug the speaker cable from the motherboard.
Remove both speakers.
STEP 8.
Release the wireless card antenna cables.
Unplug the webcam cable from the motherboard.
Remove four screws securing the display hinges (red circles) and one screw grounding the video cable (green circle).
STEP 9.
Lift up and remove the display panel assembly.
In the next guide I’ll explain how to get inside the display panel and remove/replace the web camera module.
STEP 10.
Remove two screws securing the top cover assembly.
STEP 11.
Carefully lift up the top cover assembly.
Be careful, the touch pad cable is still attached to the motherboard.Release the touch pad cable and remove the top cover assembly.
STEP 12.
Now we can access the motherboard.
Unplug three cables pointed with arrows.
Remove three screws securing the motherboard.
Lift up and release the RJ11 (modem) jack.
STEP 13.
Start removing the motherboard from the laptop case.
The motherboard has been removed.
STEP 14.
Finally, you can access and replace the cooling fan.
Simply remove one screw securing the cooling fan to the laptop base and replace it with a new one if needed.
If you are replacing the motherboard you’ll have to transfer some parts to the new board.
Transfer the DVD drive connector, modem card, heat sink, processor and modem cable.
September 9th, 2010 at 3:14 am
Hi,
Thanks for the comprehensive guide.
Quick question… I need to buy a copper shim for the top of the graphics chip to keep it from overheating but have done a search on the web and ebay and can’t find an answer to what thickness I will require. Can you advise?
Cheers,
Debs
September 8th, 2010 at 10:54 am
Hi, thanks for the reply. On that page is shows 2 clips to fit the key back on, myn only has 1. Also it says to fit it to the 4 points, on this laptop there is only 3.
This may come across as dumb but im not good with laptops.
thanks again
September 7th, 2010 at 9:36 pm
Chris,
Read this: A key fell off the laptop keyboard. Fixing the problem.
September 7th, 2010 at 1:12 pm
Hi. I have a 6730s and the f12 key has fell off.
Any idea on how I get it back on?
Thanks
September 5th, 2010 at 12:41 pm
Richard,
The CPU fan part number listed in the service and maintenance guide on the page 22.
Here’s the part number: 491621-001 (For use only with HP Compaq 6735s Notebook PC models).
If you google the part number, you’ll find the fan. It looks like SparePartsWarehouse has this fan for $26.99+shipping. This is the original replacement fan shipped directly from HP.
September 5th, 2010 at 12:15 pm
Hi
Sorry its a HP 6735s – AMD Sempron SI-40 Model
Ive been looking online for spare fans and cant find any – even on ebay etc . . are their other models fans which will fit? Ive found fans for 6720 model but not the 6735s model
Regards,
Richard
September 5th, 2010 at 9:16 am
richard,
What is your laptop model?
September 4th, 2010 at 10:13 pm
Hi Guys . My Fan is making a horrible sound (like a vacuum cleaner or a motorbike) – i removed the case and I think the bearing must have gone or something – any idea how i can replace the fan with a new one? I contacted HP and they quoted me over $150 for a new fan which i find too much.. How can i find the fan on say ebay or know which replacement to buy from the shops
Thanks for the great walkthough – could not have done it without your help
August 22nd, 2010 at 2:27 am
great help . you save me a lot of money
August 22nd, 2010 at 1:46 am
Very helpful instruction. Can anyone advice me on this problem: 6735s Screen gets black (shuts off and everything else is running). It happens without any reason. Sometimes goes black after 5 mins, sometimes after whole day. I thought some contact is failing. I tried to open/close LCD screen thinking that there was problem, but with no luck.
Can it be connected with battery failing recently?
Even if I remove battery and hook it to AC power, problem still exist.
Also, Laptop was warm all the time in region left to the touch pad.
Any answer is highly appreciated.