Hi, I have serviced TVs, Stereos, VCRs, etc. for many years. I have worked on my own computers, but I have never been able to fix a keyboard on any of my old laptops.
The problem is a few keys do not respond (press them and nothing happens, but sometimes it does). Note: Nothing was spilled on the keyboard(s).
Note: An external keyboard always works.
What is the common cause for this type of keyboard problem?
Thank You in Advance, John