How do you clean the yellowed keycaps bro? Retrobrite? Can you share with me the tutorial.
Yeah, sure. I find that it's much more... carefree to retrobright caps in sunny weather than indoors with a strong UV light like I do, or maybe I just do it for too long.
Either way, I have a medium-sized / large cardboard box that I have lined with the shiny side of aluminum foil, then I cut the top to allow it to be raised so I can examine the inside, I rest a UV lamp in the entrance of the box and then cover it. It's not the most flawless or best way of doing it, but it works okay. I'd recommend this for cases only.
For caps, I would implore you to use the liquid form of H2O2 and soak the caps in it using a clear plastic container, shining the UV down at it through the open area. This would just be mainly set and forget since they'll be immersed. It's too easy to stain caps using the hair salon developer creme solution. I've gotten streaks on some caps using it. No streaks when used outside in the sun, but definitely when I used the artificial light indoors.
I used Matt3o's recommened recipe of 4 parts H2O2 creme developer to 1 part water, and 1/2 parts Oxygen bleach, like oxyclean. I use some home cleaning stuff that is already in a liquid form.
Outside, you might get away with spraying and leaving for an hour before respraying, but do it for 30 minutes if you want to be safe.
Indoors, 30 minutes is best, but if you're careful, you can do an hour. I'd recommend washing the stuff off during every respray so it doesn't dry on the plastic, or else you will have to be really sure that you sprayed the plastic down well to keep the creme moist.
Yeah, it's an annoying process. My Leading Edge board took two days. Around 16 + hours of retrobrighting and it wasn't even that bad. The Dell AT101 was worse and it cleared up faster.