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Introduzione

This guide will show you how to safely disassemble a Logitech G502 Hero mouse in preparation for replacing internal components of the mouse for repair or refurbishment.

  1. To keep it out of the way, wrap the USB cable using the integrated Velcro cable tie
    • To keep it out of the way, wrap the USB cable using the integrated Velcro cable tie

    • If the Velcro cable tie is damaged or missing, a twist tie works just as well

  2. Remove the weight cover from the bottom of the mouse by lifting it up by the mouse foot You can remove tuning weights if desired, but this is not necessary for disassembly
    • Remove the weight cover from the bottom of the mouse by lifting it up by the mouse foot

    • You can remove tuning weights if desired, but this is not necessary for disassembly

  3. Using a heat gun set to low, heat up the three mouse feet for several seconds each Slide an opening pick under both the mouse feet and the adhesive underneath it If done correctly, you should be able to peel off the mouse feet with the adhesive still attached
    • Using a heat gun set to low, heat up the three mouse feet for several seconds each

    • Slide an opening pick under both the mouse feet and the adhesive underneath it

    • If done correctly, you should be able to peel off the mouse feet with the adhesive still attached

    • If the adhesive does not come off with the feet you can scrape it off with a spudger

  4. Remove the four Phillips screws holding the two halves of the mouse together
    • Remove the four Phillips screws holding the two halves of the mouse together

  5. Insert the flat end of a plastic spudger into the area indicated between the top and bottom shells The two halves of the mouse will split almost completely apart  with very little force
    • Insert the flat end of a plastic spudger into the area indicated between the top and bottom shells

    • The two halves of the mouse will split almost completely apart with very little force

    • Do not attempt to pull apart the two halves just yet

  6. Insert the flat end of a plastic spudger between the top and bottom shells on the left side of the mouse, next to the left click The top and bottom shells will completely separate, allowing the top shell to be lifted off Use caution to avoid snapping the plastic clips holding the two halves together
    • Insert the flat end of a plastic spudger between the top and bottom shells on the left side of the mouse, next to the left click

    • The top and bottom shells will completely separate, allowing the top shell to be lifted off

    • Use caution to avoid snapping the plastic clips holding the two halves together

  7. Using the flat end of a plastic spudger, carefully lift up both sides of the lock securing the ribbon cable With the locks released, the ribbon cable should easily be removed from the connector Do not use too much force releasing the locks, otherwise the connector may be damaged
    • Using the flat end of a plastic spudger, carefully lift up both sides of the lock securing the ribbon cable

    • With the locks released, the ribbon cable should easily be removed from the connector

    • Do not use too much force releasing the locks, otherwise the connector may be damaged

  8. Remove the side board by pulling it straight out to access its ribbon cable connector Using the same technique as the Hero sensor ribbon cable connector, disengage the cable lock Remove the ribbon cable with the side board
    • Remove the side board by pulling it straight out to access its ribbon cable connector

    • Using the same technique as the Hero sensor ribbon cable connector, disengage the cable lock

    • Remove the ribbon cable with the side board

  9. The scroll wheel assembly is held in by a retaining bar, which will need to be to be removed Using the pointed end of a plastic spudger, push the retaining bar out from the right side Remove the retaining bar
    • The scroll wheel assembly is held in by a retaining bar, which will need to be to be removed

    • Using the pointed end of a plastic spudger, push the retaining bar out from the right side

    • Remove the retaining bar

  10. Pull the scroll wheel assembly off of the mouse There are two small springs for the scroll wheel click actions; these are very small and easily lost
    • Pull the scroll wheel assembly off of the mouse

    • There are two small springs for the scroll wheel click actions; these are very small and easily lost

  11. Remove the four Phillips screws near the front of the mouse Remove the Phillips screw near the ribbon cable plug for the Hero sensor The cradle for the scroll wheel assembly can now be removed
    • Remove the four Phillips screws near the front of the mouse

    • Remove the Phillips screw near the ribbon cable plug for the Hero sensor

    • The cradle for the scroll wheel assembly can now be removed

  12. Using the flat end of a plastic spudger, disconnect the USB cable plug from the main board by pushing out the male end of the plug Once there is a small gap, the pointed end of the spudger can be used to push the plug out Remove the main board from the mouse bottom shell
    • Using the flat end of a plastic spudger, disconnect the USB cable plug from the main board by pushing out the male end of the plug

    • Once there is a small gap, the pointed end of the spudger can be used to push the plug out

    • Remove the main board from the mouse bottom shell

  13. With the main board removed, the Hero sensor board is revealed Remove the two Phillips screws holding the Hero board in Using tweezers, carefully remove the two nylon spacers from the posts
    • With the main board removed, the Hero sensor board is revealed

    • Remove the two Phillips screws holding the Hero board in

    • Using tweezers, carefully remove the two nylon spacers from the posts

    • Remove the Hero sensor board

  14. Start by taking off the clear plastic piece on top of the cable stress reliever With the clear plastic piece remove, the cable can be removed at the stress reliever and bottom shell With the clear plastic piece remove, the cable can be removed at the stress reliever and bottom shell
    • Start by taking off the clear plastic piece on top of the cable stress reliever

    • With the clear plastic piece remove, the cable can be removed at the stress reliever and bottom shell

  15. All internal components for reference Phillips screws Scroll wheel springs
    • All internal components for reference

    • Phillips screws

    • Scroll wheel springs

    • Hero sensor nylon spacers

    • Ribbon cables for side board and Hero sensor board

    • Scroll wheel assembly

    • Scroll wheel cradles and retaining bar

Conclusione

Replace necessary parts and then follow these instructions in reverse order to reassemble.

Altre 2 persone hanno completato questa guida.

spslizer

Membro da: 10/03/2020

554 Reputazione

2 Guide realizzate

What’s that button near at the spring on top. Is that a middle mouse button? (yellow button thing at the middle at the top)

Nicholin V - Replica

You are correct, that is the middle mouse button

spslizer -

What’s a good replacement switch for the 2 main left/right buttons? They say OMRON 3159C21 D2FC-F-K

Anthony Clark - Replica

That’s a good switch to replace them with

Me personally, I like to pull the switches off of other mice, like those rebranded Logitech ones that are bundled with some computers

The G502 is easy enough to pull apart and put back together that I don't mind replacing the switches on occasion

spslizer -

@spslizer sorry I wasn’t clearer before: the switches that are on the primary/secondary buttons are the OMRON D2FC-F-K and the primary switch has failed. I’m replacing them both with Kailh GM 8.0 switches since they seemed to have a good reputation.

I definitely need to study desoldering more though, I am having a lot of trouble removing the bad switches!!

Anthony Clark - Replica

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