Question Lenovo Yoga Keyboard Issues

Oct 23, 2020
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So the device in question is a Lenovo Yoga 710-15IKB. I7 with the NVidia 940mx, 16gb ram and 256 ssd. 15 inch touch screen convertible. Here is a link to the laptop however min is the 16g ram variant. https://www.lenovo.com/us/en/laptops/yoga/700-series/Lenovo-YOGA-710-15IKB/p/88YG7000772
Before all this the first thing to go was my webcam. No incident, just one day stopped working. But it didn’t bother me much as I rarely used it. And next was blown speakers…
So around two years ago I spilled a very small amount of tea on the bottom middle of the keyboard. It was immediately powered off, flipped upside down and I quickly removed the battery and dried it thoroughly for a day or so. Upon startup, it all was well until I tried a few keys… The issues were- V, B, N, M, SPACE, and ENTER. When pushing V, it would type VB, and when pushing B it would do the same. I went the same with the N, and M keys. Space bar would trigger the enter key and vice versa. As I still needed to work, my go to fix was a USB keyboard and to just deal with it until I could get it fix or a better laptop. Before all this the first thing to go was my webcam. No incident, just one day stopped working. But it didn’t bother me much as I rarely used it.
A few months later I purchased a keyboard for the yoga online. I replaced the keyboard and inspected as I went along. It’s a full teardown of everything besides the screen to replace the keys. But alas, I couldn’t find any worrying signs as I tore it down and reassembled. And now it gets interesting… I booted it up for the first time with the new keyboard, opened word and notepad to test and sure enough, the same key issues!
So I was defeated, and frustrated. A friend suggested a bad MOBO, even if mine had no signs of damage. And something more… I must have disturbed the monitor or cable, because now it will randomly flicker as well as a small faint vertical line that comes and goes...
This would eventually lead to frustration and me breaking down and buying a new laptop. So the Lenovo yoga found a comfy place on the closet shelf for the next year or two.
So, about a month ago I was watching a YouTube, and found a cool video abo re-purposing old laptops into a home workstation. Out of curiosity, I pulled the Yoga from the shelf. To my surprise after booting up the keys seemed to function fine! I was stoked! Now I had my thin little Yoga back! It still had a screen flicker and occasional very faint vertical line, but it was back!
Now it was on! I was going to fix the Yoga and start using it. First thing was ordering speakers, a new web camera, and the touchscreen’s connecting wire in hopes of correcting the screen flicker. A few more YouTube tutorial videos later, and Bam! A working webcam and speakers! Sadly the new screen cable didn’t help the occasional flicker… but I could deal with it for now.
Then, strangely after a happy month of use the Yoga <Mod Edit> the bed again! The key problem was back!
Now I’m getting a little mad, a little frustrated, intrigued, and challenged! So I ordered a new MOBO and installed it yesterday. It all went well and I was super happy when it booted up and seemed to work fine! But upon some use I went to type a comma (,) and low and behold.., an M appears! I mean seriously what the actual <Mod Edit>
Does anyone out there have any ideas? I would really like to continue using the Yoga. It still has decent specks in this day and age. And after the games it’s played with me, I would really love to come out of this on top!
Help me please!!!!!
 
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