In this guide I explain how to disassemble a Dell Studio 1555 laptop. I’ll show how to take it apart completely and remove all major parts.
With this guide you’ll be able to:
- access laptop hard drive, memory, CMOS battery.
- remove and replace keyboard.
- remove and replace DVD optical drive.
- remove motherboard.
- remove and clean the cooling fan assembly.
- access and DC jack harness.
Before you start, make sure the laptop is powered off and battery removed.
Start laptop disassemble with removing the memory card and hard drive cover which is secured by three screws.
Under the cover you’ll get an access to both memory modules/slots, hard drive, wireless card and CMOS battery.
Also, some Dell Studio 1555 models can be equipped with WWAN and WPAN cards.
Remove four screws securing the hard drive. Slide the hard drive to the right to disconnect it from the motherboard.
Lift up and remove the hard drive.
If you replacing the hard drive, you’ll have to transfer mounting brackets to the new drive.
My Dell Studio 1555 laptop has a regular 2.5″ SATA hard drive which can be upgraded to a SSD hard drive (expensive but quite and fast).
In order to release the memory module you’ll have to spread latches on both sides of the memory slot.
The memory module will pop up at a 30 degree angle.
Pull both memory modules from slots.
Dell Studio 1555 laptop uses DDR2 PC2-6400 memory. It can take up to 8GB total (up to 4GB RAM in each slot).
If you want to use more than 4GB RAM, you’ll have to run a 64-bit operating system.
Remove one screw securing the center control cover.
Carefully lift up the upper side of the center control cover and slide it towards the display.
Remove the center control cover.
Remove two screws securing the keyboard.
Lift up the keyboard and place it upside down on the palm rest.
Be careful. The keyboard still attached to the motherboard. There are two ribbon cables running from the keyboard to the motherboard.
Before you can remove the keyboard, it’s necessary to unlock both connectors and release cables.
You can unlock both connectors using the same method.
Lift up the right side of the locking tab. It will open up at a 90 degree angle.
On the following picture the connector shown in the unlocked position.
Now you can pull the cable from the connector.
Open up another connector using same method.
Remove the keyboard.
Now you can replace it with a new keyboard if needed.
Disconnect both antenna cables from the wireless card.
If you have WWAN and WPAN cards installed, disconnect antenna cables from them too.
I would suggest making notes how those cables are connected.
Unroute all antenna cables.
Remove two screws securing display hinges on the bottom of the laptop.
Disconnect shown display cables from the motherboard.
Unroute display cables and pull antenna cables though the opening in the top cover.
Remove two screws securing the display hinges.
Lift up and remove the display assembly.
In one of the following posts I explain how to take apart the display assembly and remove the LCD screen.
Remove eight screws from the bottom of the laptop.
Remove ten more screws from the top cover.
Disconnect shown cables from the motherboard.
Start separating the top cover assembly from the bottom cover.
Continue separating the top cover.
I’m using a guitar pick as a case cracker.
Lift up and remove the top cover assembly.
Remove one screw securing the CD/DVD optical drive.
Lift up the front side of the CD/DVD optical drive and disconnect it from the motherboard.
Remove four screws securing the ExpressCard board.
Remove the ExpressCard board.
As you noticed, I disconnected cables from the card itself and left them connected to the motherboard.
Remove six screws securing the motherboard.
Disconnect three shown cables from the motherboard.
Lift up the right side of the motherboard and carefully pull it from the bottom case.
Remove the motherboard.
On the bottom side of the motherboard you’ll get an access to the cooling module (cooling fan and heat sink).
If the cooling fan and heat sink look dusty, you can blow it off with compressed air.
Also, cleaning the cooling module will fix any possible laptop overheating issues.
Noisy fan? New Dell Studio 1555 fans available here.
If you would like to replace the cooling module or apply new thermal grease on the CPU, you’ll have to remove it.
Loosen six screws securing the cooling module and disconnect the cooling fan cable from the motherboard.
Now you can separate the cooling module from the motherboard and access the CPU.
The DC jack (power connector) in Dell Studio 1555 laptop is not soldered to the motherboard.
The DC jack attached to the power harness which can be unplugged from the motherboard (we did it in the step 28).
If your DC jack failed, just replace the entire DC jack harness.
It’s possible this guide will work for some other Dell Studio laptops. If it works for you, please mention the model in comments below.