PlayStation Optical Drive Troubleshooting

My very first repair project was replacing an optical drive on a PlayStation, but I wanted to take it up a notch and see if I could actually repair one instead of replacing it. I initially tried to fix it quite some time ago, but after not having any luck I just set it to the side and didn't touch it for quite some time. Finally, I decided to give it another try. I followed along with a YouTube video of a professional troubleshooting and repairing his own PSX optical drive. I tried the trick of testing the sled motor & spindle motor by soldering wires to the motor terminals and holding the other ends of the wires to a battery. This moved both motors smoothly, so I was able to rule out both motors as an issue. This led me to believe that the problem was the laser itself. I tested the laser with no disc inserted to see if the laser mechanism was focusing properly, and it appeared that it was. Something that I had already tried early on was cleaning the laser itself, but that didn't seem to make a difference. Something that I didn't know, though, is that there is a mirror underneath the laser mechanism that could also be cleaned. I removed the housing from the mechanism and then was able to get underneath it with isopropyl alcohol wipes. After reassembling the optical drive, I found that it was reading discs again! This ended up being a much easier fix than I initially suspected, but I am especially proud of myself for practicing my soldering skills. At a point when I was soldering the test wires to the motor terminals, one of the motor wires came out of place and got soldered to the wrong pad. Instead of panicking like I usually do, I calmly practiced the tips I learned from watching YouTube videos. I was able to get everything back in place, as well as wick up the excess solder (which is something I usually struggle with).