Introduction
The Asus X551CA motherboard is the central unit that integrates several working components together, such as the hard drive, RAM, battery, LCD, and many more.
What you need
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Turn the laptop upside-down and remove the following screws using a Phillips #0 driver:
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Two 9.5 mm screws in the middle of the back edge, and one 9.5 mm screw in the right edge
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Two 4.3 mm screws in the back corners
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One 17.5 mm screw at the left edge near the optical drive
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Three 4.3 mm screws in the front edge
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Invert the laptop in order to gain access to the ribbons.
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Remove each ribbon by flipping the small white plastic flap up and gently pulling on the ribbon.
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Now that the ribbons have been detached from the bottom cover, carefully remove the keyboard plate cover. Once it has been removed, place it in a safe and moisture free area so it does not get damaged.
Yes and you have to put lotion on
Now, that is a stupid question! Of course! As I am working on 551M, I naturally have to have nails painted orange, with blue accents!
that boy ain't right
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Unscrew the three 5.5 mm Phillips #0 screws with the Phillips #0 Screwdriver.
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Using the Phillips #0 Screwdriver, unscrew the 5.5 mm Phillips #0 screw that holds the spacer in place.
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Use the Phillips #0 Screwdriver to unscrew the 3.2 mm Phillips #0 screw which attaches the WiFi card to the motherboard.
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Remove each of the two small antenna connections by disconnecting one wire at a time. Each wire should easily unsnap from the Wifi card.
This computer uses a Mini PCIe slot card, as you can see in the photo's. You can órder almost any card, from either FENVI brand (Intel) or Artheros (Qualcomm), just make certain you order a card that specifically says it is a HALF HEIGHT Mini PCI-e card. Intel stop producing cards like this after the 7265HMW card but other brands make compatible cards. In the Intel design, any card that ends in 'HMW' is a card that is a mini PCIe card. If you see any other combination of letters then it is not likely to be compatible.
If you have any questions, ask the vendor if the card is compatible with your computer.
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Remove the battery from the laptop by applying pressure on both ends and lifting it out of the case.
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With the Phillips #0 Screwdriver, remove the nine 5.5 mm Phillips #0 screws which hold the motherboard in place.
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Remove the wires by easily pulling them parallel to the motherboard's surface.
You should never pull plugs out by the wires themselves. ALWAYS use a tool to release the plug itself by inserting a spudger between the plug and socket, and gently easing it out. Pulling by the wires risks damaging the wires, or ripping the socket off the motherboard.
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Remove the LCD display connection by gently pulling on the attached wire.
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Gently lift any tape that may be holding the connection.
If the tape is removed when disconnecting, be SUPER sure that the connector is the right way before reconnecting. I managed to brake this connector by putting it in the wrong way! Both sides look very similar.
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
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6 Comments
thanks for the step... please where can i buy the motherboard online.
anyone know what the part number is for the audio combo jack?
My mobo has some damaged mosfets due to a faulty charger. I tested both voltage and amperage with a multimeter and theres a part of the mobo that’s not receiving any power, I figured out searching on the web that there are a few mosfets that regulate voltage on the mobo and there is one that’s not giving any output power at all. The mobo turns on for a few seconds starts the BIOS configuration then turs off and doesn’t start at all for about 4 hours or so. if I connect the DC adapter the charging led turns on for a few seconds then turns off again once every few hours. My laptop is out of any warranty and I really wat to fix this, I can’t afford a new laptop or a replacement mobo
now many sellers on ebay have cheap motherboards for asus x551ca, it’s more expensive to fix a motherboard than to buy a replacement.
Tom -
X551CA-SX030H is it possible to replace memory in this model?
screw assignments are definitely wrong. I swapped the red and the green, as per comment above, and kept the blue as-is.
jasonbuechler - Reply
jason is right
starwilson - Reply
correct, swap the green and red
Josh - Reply
Jason is correct
Clem Lanoe - Reply
Thanks everyone. It does seem like someone got their screws mixed up when they wrote this guide. I’ve made some changes as you all suggested, so the screw placements should be more accurate now. If anyone with this laptop could verify the screw measurements with a digital caliper, that’d also be very helpful.
Jeff Suovanen - Reply