The LEFT and DOWN directional arrows on my Mother's MBP just stopped working. All other keys work fine. Does this generally mean I will need to replace the top case? Has anyone out there experienced keys not working, then working again? Could it possibly be the connection to the logic board? Or some dust in an undesired location?
I'm assuming I will have to replace the entire top case, but I'm just hoping someone out there can shed some light on this for me.
thanks

I'm assuming I will have to replace the entire top case, but I'm just hoping someone out there can shed some light on this for me.
thanks