Einleitung
If any Dell Precision M3800 keys are no longer working, use this guide to replace the keyboard.
Before using this guide, check for foreign objects under the keys that can cause underperformance. You may be able to fix this issue by dislodging said objects with an ESD-safe brush or small dust blower, instead of replacing the equipment.
Before beginning, be sure to power down the laptop, and unplug from the external power source(s).
Note Before Beginning: You can perform the removal of the fans, RAM, and USB Ports in any order. You might notice some of the later steps have photos that still include parts that were removed previously, this is because you can remove these parts in any order.
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Use a T5 Torx screwdriver to unscrew the ten 3mm screws on the laptop back cover.
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Lift up the silver cover from the back panel to reveal two screws.
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Use a Phillips screwdriver to remove the two screws underneath the silver cover.
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Use an opening tool to pry around the edges of the back panel to loosen the panel.
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Remove the back panel.
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Disconnect the battery cable from the system board [1].
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Use a Phillips screwdriver to remove the four screws securing the battery to the laptop.
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Lift the battery off the computer [2].
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Pull the small silver RAM tabs outwards to pop it out of its place in the laptop body.
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Remove the RAM from the laptop body (it should easily come out after pulling the silver tabs).
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Remove the single 3.5 mm screw at the top of the left side holding the silver bracket using a Phillips #00 screwdriver.
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Remove the LAN chip by pulling from the top away from the connector.
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Disconnect the wires that are connected to left side of the motherboard with a hooked prying tool.
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Unscrew the three 3.5 mm screws that secure the circuit board using a Phillips #00 screwdriver.
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Remove the circuit board by lifting upward.
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To fully remove the USB ports from the circuit board, you'll need to desolder the points. Use the How to Solder and Desolder Connections guide for more information on soldering and desoldering connections.
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Use a Phillips #00 screwdriver to unscrew the two 3.5mm screws that are holding the fans in place.
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Using a nonmetal prying tool, unplug the cord connecting the fan to the motherboard.
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If replacing the right fan, this cord is located underneath the fan.
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If replacing the left fan, this cord is located on the left of the fan.
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Use nonmetal prying tool to lift the bottom of the fan from the laptop body (this will require some force and you will hear an adhesive pulling sound).
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Repeat the steps for the second fan if needed .
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Disconnect the 6 wires that are attached to the motherboard.
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Three of the six wires have a clasp holding the wire. Pull up on the tab and remove the wire.
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The other three wires have pull tabs and can be removed by pulling from the connector of the wire.
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Unscrew the six 3.5mm screws using the Phillips #00 screwdriver.
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Lift the motherboard out of the laptop body to expose the backing of the keyboard.
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Remove the black piece of tape at the top of the keyboard.
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Unscrew the fifteen screws with a 2 millimeter 000 Philips Head.
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Using a prying tool, place wedges underneath the keyboard until the entire keyboard is removed.
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To reassemble your device, follow these instructions in reverse order.
Ein Kommentar
Reminder: There are more than 15 screws to unscrew on the keyboard (Step 14). They’re hidden under the “K”s.
You shouldn’t apply force to remove the keyboard.
Felipe -
there are 2 additional screws under the metal plate
Andrew Gaquin -
That's right, at first time I tried carefully remove the back plate , with no success, {nly few minutes later I realized it were these 2 screws holding it all together and fighting against my intrusive dids
Alexander Fediushyn -
Thanks for the tip! I corrected the step to include this.
Arthur Shi -