Logitech G915 Wireless: Key switch repair/replacement

Introduction

This is a guide used if a switch replacement is needed or in my case if a keycap breaks off inside of your switch, rendering the switch inoperable. I will be using colors to refer to different sets of screws.

What you need

Step 1 Removing Front Screws

Logitech G915 Wireless: Key switch repair/replacement, Removing Front Screws: step 1, image 1 of 1

Remove all of the screws (red set) on this keyboard using a PH1 size Philips bit.
You can remove all the keycaps or just remove the necessary keycaps surrounding the screw heads.
Make sure you press down firmly when unscrewing to prevent stripping the screw head.

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Step 2 Remove Rear Screws and Battery

Logitech G915 Wireless: Key switch repair/replacement, Remove Rear Screws and Battery: step 2, image 1 of 2

Logitech G915 Wireless: Key switch repair/replacement, Remove Rear Screws and Battery: step 2, image 2 of 2

Continue removing (red set) screws, looking at the picture, remember to open up the left foot in order to gain access the screw underneath.
Refer to this colored diagram in next steps!!!

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Step 3

Now using the hair dryer heat up the rubber pad (green set) and gently remove the rubber pad using tweezers starting from one side. Make sure to get under the white fabric layer and lift slowly giving time for the adhesive to loosen. Remove the single screw (green set) from each pad.

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Step 4 Removing Screws Under Label

Logitech G915 Wireless: Key switch repair/replacement, Removing Screws Under Label: step 4, image 1 of 2

Logitech G915 Wireless: Key switch repair/replacement, Removing Screws Under Label: step 4, image 2 of 2

Using this same technique, heat the corners of the rear sticker (green set) and starting from the corner use the knife to get under the edge while not to crease or fold the sticker too much. Remove the two screws (green set) from under the label.

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Step 5 Removing Back Cover

Logitech G915 Wireless: Key switch repair/replacement, Removing Back Cover: step 5, image 1 of 1

Using a gentle prying motion lift up at the yellow arrows making sure not to break any tabs at the top of the keyboard. Once the battery is removed you can unplug the connector to the board. Remove the two screws (yellow set) from under the battery.
After removing all of the screws you are able to remove the back plastic and gain access to the rear of the circuit board.

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Step 6

Tool used on this step:

Desoldering Pump

$3.99

Buy

Now you need to find the key you want to replace (Which in my case was the number 3 key).
Locate the correct key and their corresponding contacts. Using the soldering iron, heat up the solder and remove it using a desoldering pump.
Once both contacts have their solder removed, you can flip the keyboard around and remove the key switch from the front of the keyboard.

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Step 7

Logitech G915 Wireless: Key switch repair/replacement: step 7, image 3 of 3

Now if you're replacing a switch you need a new one. Or you can disassemble and clean/re-lubricate the switch.
Or in my case you can disassemble the switch by releasing the 2 tabs on each side (purple set). Retrieve the broken keycap piece from inside and reassemble the switch.
Now with the switch ready to be soldered back onto the board you can take your solder, flux and soldering iron, insert the switch back through the front of the keyboard and re-solder the two contacts to the board.