I just want to start off by saying I am new here and I don't know a whole lot about keyboards.
Recently, I painted my Ducky Shine 3 white. To do this, I had to open it up. To open it up, you have to disconnect a cable from a red PCB. There's an image below to show you what the cable and PCB look like (found the image on Overclock.net, not my image FYI.)
So I disconnected that cable, painted my keyboard and put it back together and it worked fine. Shortly after, I noticed I hadn't screwed in two screws. There's an image below to what the two screws look like (I found the image here on Geek Hack, not my image FYI.)
I figured I would try to use the keyboard without the screws in and see how it goes. A few days later, I started to notice that the keys would randomly register as still being pressed down after I let go of them. For example, if I was typing "Reddit" into my URL bar, it would type it out like this; "Reddddddddddit." Or in games like CS:GO if I was holding down the "W" key to walk forward and I let go, my character would continue to walk forward for a few seconds after I let go of the key.
I tried to deal with this and just ignore it for a few more days, hoping it was just a fluke or something but sadly it continued to reoccur a few times every day of use of the keyboard.
Thinking the two screws was the problem, I got fed up with it and took the keyboard apart again. To take it apart, I had to disconnect the cable from the small red PCB that the USB connects to again.
I didn't get the two screws back in yet, but I decided to try to plug it back in to make sure the keyboard is still working. Well, it wasn't. I didn't know what I was doing wrong. I made a post on the Mechanical Keyboards subreddit on Reddit and someone told me that I might have fried the "controller" by plugging the cable back in the wrong way and this is what I think happened sadly.
So my question is, can I replace this "controller" (keep in mind I have absolutely no idea what the controller is) or am I **** out of luck and have to buy a new keyboard?