820-3488 clicking but pointer not moving

[VinceLx2]

Hi,
I have few trackpads from Macbook Air 2013-2017, some clicking but no pointer moving, other without reaction. They are not apparently water-damaged. Is there any way to repair them? Any board view available? Or better to forget about repairing them?

 

[2informaticos]

Nothing available...
If you can't detect any corrosion, or dirty pins on the connectors, anything else is wasting time.