Anyone repaired/replaced mouse (pcb mount) on G84-4400 keyboard?

[dorkshoei]

Anyone know if the mouse soldered to this PCB is a commodity item?     I just picked up a used G84-4400 and the mouse feels worn out,  very notchy especially in X-axis,  left barely registers.

I couldn't find the pcb mouse mouse assembly looking on alibaba/etc.

No obvious markings except a serial# and QC sticker.

[Kim Christensen]

I couldn't find the pcb mouse mouse assembly looking on alibaba/etc.

You might want to search for the word "trackball" instead of "mouse".

[dorkshoei]

I couldn't find the pcb mouse mouse assembly looking on alibaba/etc.

You might want to search for the word "trackball" instead of "mouse".

I meant trackball.  Not sure why I wrote mouse, repeatedly :-). Brain freeze lol

[Ian.M]

Unless there's surface damage to the big ball or the two rollers, or unless the clips the roller shafts run in are cracked, its very likely that carefully cleaning all the parts and applying a tiny drop of silicone oil to each clip that the shafts run in will make it mechanically run silky smooth again.  The lack of responsiveness and skipping are probably due to dirty slotted encoder discs, mis-aligned opto-sensors, or low output from the IR LEDs illuminating them.  Get in there with a two channel scope and check the quadrature signals as you spin the shafts.

[dorkshoei]

Unless there's surface damage to the big ball or the two rollers, or unless the clips the roller shafts run in are cracked, its very likely that carefully cleaning all the parts and applying a tiny drop of silicone oil to each clip that the shafts run in will make it mechanically run silky smooth again.  The lack of responsiveness and skipping are probably due to dirty slotted encoder discs, mis-aligned opto-sensors, or low output from the IR LEDs illuminating them.  Get in there with a two channel scope and check the quadrature signals as you spin the shafts.

Thanks.  I'll have to figure out how to take it apart.    On a towel with lots of photos as it looks like there are a bunch of tiny parts inside.