Version K phaser mainboards and above have a replaceable Wifi module. These Wifi chips can be replaced if they malfunction. This is much more economical than replacing the whole mainboard if just the Wifi fails.
Please keep in mind that this article only relates to Revision K and above mainboards.
If you need to replace a phaser mainboard (of any revision), please read this article.
Replacing the Module
Start by powering off the phaser by inserting the key into the slot in the back sensor. The phaser is off when all the lights have turned off.
Disassemble Phaser
Remove the nozzle with a screwdriver or the head of the hex driver by slotting in into the gap at the front of the phaser. Then use the hex driver to unscrew the 6 hex screws on the bottom of the phaser. Ensure that the hex driver is set to 9 and is set to the reverse direction. The top plastic enclosure should now easily pull away.
Remove the main board by pulling back on the LCD screen, while gently supporting the front of the PCB. Set the main board to the side of the phaser while you carefully pull out the cables inline with the direction of the plugs. Slide out the NFC card reader if you have a Pro system.
Replace the Wifi Module
Unscrew the 3 screws holding the Wifi module to the mainboard. (Use the same driver as the charge receiver screws)
Carefully replace the malfunctioning Wifi module with a replacement one from your spare parts.
Fasten the 3 screws to secure the Wifi module in place.
Phaser Reassembly
Insert the cables from back to front, ensuring that no cables are being pinched or strained when the mainboard is placed back into its cavity.
(Pro Phaser only) Once the cables are securely tucked away, insert the NFC module.
You can now reattach the top part of the enclosure using the hex driver.