Keyboard Issue With Some Old Laptop Computers

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

 

[Baron]

jaugustine@verizon.net Inscribed thus:

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

Usually condensation dissolving the printed track. No real cure other
than replacement.

--
Best Regards:
Baron.

 

[N_Cook]

<jaugustine@verizon.net> wrote in message
news:e2s4j71m4a0r0lmr27cpkujn7oninglnim@4ax.com...

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

Interboard header coming undone from flexing of case and then innards, not
necessarily at the keyboard header