How can I debug a laptop keyboard hardware problem? Basically, how do I know what could be or what is exactly broken?
For example, I have a problem and I might like to solve it. What I do know is that when it broke, I was there. At first I only thought that "v" had broken, later it turned out, at least for me, it would make sense that in the keyboard matrix, an entire "line" did not work .
So I can no longer press the following keys at the same time without one of them being ghost, if I could not list them all:
"q3t", "ur", "ot", "cb" (not sure for cb although I think it was possible before), "wrz"
when you hold SHIFT, "B" does not work
holding right alt or "alt gr" 4 and 5 is not their combination does not work.
so yes that's it
Now here's something that is starting to get into a strange situation. So I know there are circuits and stuff and it doesn't make sense to me that a circuit like a line __________ just stopped like that _______ / __________ I don't think because that would make "v" not work at all. Because sometimes the "v" works and it is not because of the "strong pressure".
Sometimes there is like a "wave", where a bunch of "v" starts to appear which goes like this in entering text:
So when this happens, if I press any other key as an example on the numeric keypad or even F1. If I do that, the "v" stops "spamming". But sometimes it also stops on its own, without me doing anything on the keyboard.
What I was able to try is that when this "wave" appears if I press a key on the "on-screen keyboard", it does not stop the "spam". I'm not able to test what's going on with an external keyboard, but I guess it's a laptop keyboard hardware problem somewhere, I don't know where.
Now here's the weird part, sometimes after the wave or, well there are times when everything works again, the "v" and all combinations would work again, is that the weird part?
Remember when I mentioned the circuit line, if it is broken? There is now a way it won't be interrupted, something else has to happen, I don't know what. I don't understand if the cable starts to run inside my computer or something, it just doesn't make sense to me.
I am able to make a "wave" appear when I try to press these non-functional combinations "q3t" WHAT is not guaranteed. Sometimes just a "v" appears when I do this.
Then when I use "v" it works for a while and then it doesn't work anymore, it means it goes back to the state where when I press it it does nothing and when it doesn't work everything the other combos don't work as well, like "q3t".
So yes, what exactly is going on? How is it possible that "v" sometimes works or not? How can I debug this? Because I don't know if it's worth trying to open it and then what, unplug and plug back in?
The model I have is an ASUS ROG GL752VW. The keyboard layout is essentially a 96% keyboard.