Difficulty
Moderate
Steps
13
Time Required
1 hour
Sections
3
- Battery
- 3 steps
- Keyboard
- 2 steps
- Motherboard
- 8 steps
Flags
1
Needs Better Images
Better photos will improve this guide. Help out by taking, editing, or uploading new ones!
BackToshiba Satellite C855D-S5109
Full Screen
Options
History
Save to Favorites
Download PDF
Edit
Translate
Get Shareable Link
Embed This Guide
Notify Me of Changes
Stop Notifications
Introduction
Motherboard failure will almost always result in a catastrophic failure of the laptop, so if your laptop completely refuses to turn on and you’ve already checked the battery, replacing the motherboard may restore functionality to your machine.
What you need
Step 1
Battery
- Flip the laptop over so the bottom is facing up.
Flip the laptop over so the bottom is facing up.
1024
Step 2
- Slide the two lock tabs on the battery to the open position.
Slide the two lock tabs on the battery to the open position.
Step 3
- While still holding the lock tabs outward, use your hand to grab the top of battery and pull up.
- Remove the battery.
While still holding the lock tabs outward, use your hand to grab the top of battery and pull up.
Remove the battery.
Step 4
Keyboard
- Using a Jimmy, slowly lift the keyboard up and away from the palm-rest. Slowly work around the edges, pushing the clips back, prying the keyboard up with minimal force.
- Be sure to place the tool under the keyboard not the keys themselves!
- Patience is key on this step; it might take a while, but don’t force anything or you’ll risk breaking a clip.
Using a Jimmy, slowly lift the keyboard up and away from the palm-rest. Slowly work around the edges, pushing the clips back, prying the keyboard up with minimal force.
Be sure to place the tool under the keyboard not the keys themselves!
Patience is key on this step; it might take a while, but don’t force anything or you’ll risk breaking a clip.
Step 5
- Flip up the locking flap of the ZIF connector holding the keyboard cable on the motherboard.
- Pull the keyboard ribbon cable out from the connector on the motherboard.
- The ribbon should detach from the palm-rest not the underside of the keyboard.
- Remove the keyboard from the laptop.
- While replacing the keyboard, you will not need the Jimmy. Just gently press down around the edges of the new keyboard after plugging the ribbon cable in. You will hear it click back into place as the clips engage.
Flip up the locking flap of the ZIF connector holding the keyboard cable on the motherboard.
Pull the keyboard ribbon cable out from the connector on the motherboard.
The ribbon should detach from the palm-rest not the underside of the keyboard.
Remove the keyboard from the laptop.
While replacing the keyboard, you will not need the Jimmy. Just gently press down around the edges of the new keyboard after plugging the ribbon cable in. You will hear it click back into place as the clips engage.
Step 6
Motherboard
- In the area under the keyboard, disconnect the first cable that is located inside of the square near the front right of the laptop.
- Disconnect the next two cables that are located inside of the square located at the back right of the laptop.
In the area under the keyboard, disconnect the first cable that is located inside of the square near the front right of the laptop.
Disconnect the next two cables that are located inside of the square located at the back right of the laptop.
Step 7
- Flip the laptop over and locate all of the underside screws.
- Remove the ten 6mm Phillips #00 screws around the outside of the bottom panel.
- Remove the two 6mm Phillips #00 screws in the panel that cover the hard drive.
- Remove the panel that covers the hard drive.
Flip the laptop over and locate all of the underside screws.
Remove the ten 6mm Phillips #00 screws around the outside of the bottom panel.
Remove the two 6mm Phillips #00 screws in the panel that cover the hard drive.
Remove the panel that covers the hard drive.
Step 8
- Remove the four 6mm Phillips #00 screws scattered around the hard drive.
Remove the four 6mm Phillips #00 screws scattered around the hard drive.
Step 9
- Remove the DVD RW Drive by sliding it out.
- Pull the back panel of the laptop off, exposing the motherboard and other inside components.
Remove the DVD RW Drive by sliding it out.
Pull the back panel of the laptop off, exposing the motherboard and other inside components.
Step 10
- Remove the two screws holding down the wifi card
- Pull and disconnect the wifi card from the motherboard
Remove the two screws holding down the wifi card
Pull and disconnect the wifi card from the motherboard
Step 11
- Disconnect the two cables for the DC power socket jack and the side usb board ribbon.
Disconnect the two cables for the DC power socket jack and the side usb board ribbon.
Step 12
- Remove the two 3mm Phillips #00 screws that are holding the cooling fan down.
- Unplug the wire that is holding the cooling fan to the motherboard.
- Pull the cooling fan out.
Remove the two 3mm Phillips #00 screws that are holding the cooling fan down.
Unplug the wire that is holding the cooling fan to the motherboard.
Pull the cooling fan out.
Step 13
- Remove the nine 6mm Phillips #00 screws around the motherboard that are located inside of the yellow circles.
- Pull the motherboard out of the panel.
Remove the nine 6mm Phillips #00 screws around the motherboard that are located inside of the yellow circles.
Pull the motherboard out of the panel.
To reassemble your device, follow these instructions in reverse order.
Cancel: I did not complete this guide.
Author
with 1 other contributor
Ernest Armstrong
Member since: 09/27/2021
157 Reputation
1 Guide authored
Badges:
2
Team
Casper College, Team 1-3, Lareau Fall 2021
Member of Casper College, Team 1-3, Lareau Fall 2021
CASC-LAREAU-F21S1G3
3 Members
8 Guides authored
