I have a Acer 290 TM Laptop which is working but has a problem with the keyboard. Some keys in a line "m,klop" and the the FN keys above are not working.
It seems however that bending a bit the laptop motherboard or pushing it nearby the video card is fixing the problem. I assume that there is then a faulty connection somewhere. It is not a problem with the keyboard so cannot be fixed just by putting a new keyboard.
Probably it can be fixed just by re-soldering some lines, but how can I find the specific point of failure ?