In this guide I explain how to disassemble a Dell Inspiron 1420 or Dell Vostro 1400 laptop. I will completely disassemble the laptop and remove the motherboard.
Dell Inspiron 1420 laptop is very similar to Dell Vostro 1400 laptop. If there are any differences, they should be very minor.
Before you start, make sure the laptop is turned off and battery removed.
Loosen eight screws securing the hard drive, memory and heat sink covers.
Remove all three covers.
Lift up the hard drive assembly by the black tab to disconnect it from the motherboard.
Remove the hard drive assembly from the laptop.
The hard drive connected to the laptop motherboard via connector.
Dell Inspiron 1420/Vostro 1400 laptop uses a regular 2.5″ SATA hard drive.
Both memory modules can be accessed on the bottom of the laptop.
Remove both memory modules.
Dell Inspiron 1420/Vostro 1400 laptop can handle up to 4GB RAM. You can install up to 2GB RAM module into each slot.
You should use PC2-5300 DDR2 or faster DDR2 memory modules.
Remove one screw securing the DVD drive.
Pull DVD drive from the laptop.
Loosen four screws securing the CPU heat sink.
Carefully lift up the heat sink and remove it from the laptop. If the heat sink is clogged with dust you can clean it with compressed air.
NOTE: before installing the heat sink back into the laptop don’t forget to apply new thermal grease on the CPU.
After the heat sink is removed, you can access and remove the CPU (processor).
In the following six steps I explain how to remove the keyboard.
If you just replacing the keyboard, it’s not necessary to go though all previous steps.
Carefully lift up the right side of the keyboard cover with a screwdriver.
Continue removing the keyboard cover with your fingers.
Remove two screws securing the keyboard.
Lift up the keyboard so you can access the cable connector underneath.
You can remove the keyboard only after the connector is unlocked and cable released.
In order to unlock the connector lift up the right side of the blue locking tab at a 90 degree angle.
On the following picture the keyboard connector shown in the unlocked position.
Now you can pull the keyboard cable from the connector.
Remove the keyboard.
If you need a new keyboard for Dell Inspiron 1420/Vostro 1400 laptop, you can buy it here.
In the following eight steps I explain how to remove the display assembly.
Remove two screws securing display hinges on the bottom of the laptop.
Remove two screws securing display hinges on the back of the laptop.
Lift up and remove both hinge covers.
Lift up and unplug the video cable connector from the motherboard.
Remove one screw securing the 7-button board and remove the board.
You do not remove the board completely, you just put it aside so you can remove the wireless card antenna cables.
Disconnect both wireless card antenna cables from the wireless card.
Now you can remove one screw securing the wireless card and remove it from the laptop (optional step).
Lift up and remove the display assembly.
In order to remove the LCD screen you can follow this Dell Inspiron 1520/Vostro 1500 guide.
It’s a different model but LCD screen removal steps should be very similar.
By the way, the LCD screen can be removed and replaced while the display still attached to the laptop base.
In the next eight steps I explain how to disassemble laptop base and remove the motherboard.
Remove all remaining screws from the bottom of the laptop.
Remove three screws securing the top cover assembly.
Lift up and remove the top cover assembly.
In order to remove the motherboard, you’ll have to remove the modem card first.
Remove one screw securing the modem card, disconnect modem cable from the left side and remove the modem.
By the way, the CMOS battery is hidden under the modem.
Remove three screws securing the motherboard.
Disconnect three cables.
Carefully lift up the motherboard.
There is one more cable on the bottom which has to be separated from laptop base.
Remove the motherboard.
On the other side of the motherboard you can access and remove the cooling fan.
Simply remove two screws securing the fan, disconnect the cable and remove the fan.
A new replacement cooling fan for Dell Inspiron 1420/Vostro 1400 laptop sold here.