'How to deal with the "not-so-mellow yellow" of old computers and consoles.' Thought this might be of interest to someone here. http://retr0bright.wikispaces.com/ And yes, the URL and the title of the page are spelled differently, who knows why.
Interesting project. However, I would dispute their claim that this was discovered last year. I've known of people experimenting with Hydrogen Peroxide for countering the yellowing for years. The early style C64 was indeed that smoky colour. The later model was white.
Damn, you beat me to posting this Very cool though, I'd really like to try it out on my old Apple hardware.
I just might pick up a yellow PC Engine to try this out on. And I think retro's right. I remember reading about this sort of thing years ago. These guys had a good idea to gelatinize it though.
Word. I know that it's been talked about on this website before. Discussed and decided that yeah, you can do it, but you have to mess with some pretty nasty chemicals. I believe you can find a quote from ASSEMbler himself saying that.
White SNESSES? My God... h: :dance: Just read the ingredients... they are more basic then I imagined. Planning to try this out within the coming weeks! =]
just do it like i did left -> before the bleach. right -> after! and as easliy writen on that page http://www.superpcenginegrafx.com/cleaning_a_pcengine.html
That's pretty neat to reverse the nasty yellowing. I dunno about the retrobright mixture but the bleaching of the PC-Engine you did sounds awfully easy. I didn't know it wouldn't damage the paint to bath it in bleach.
I did spot a page warning about the use of peroxide & bleach at percentages higher than 10%, as well as a few other warnings: http://retr0bright.wikispaces.com/Problems+and+Pitfalls
Wow, it seems you can get impressive results if you do it well, I'll have to try it with a couple of yellow SNES's I got last week ^_^
One thing I have read (but dont know how true it is) is that bleach causes the casing to become very brittle as it damages the structure of the plastic. Also bleach apprently only works on discoloured consoles (eg. dirty, smoke damaged, etc) the ones which have actually had the plastic physically/chemically change colour due to the flame retardants used usually cant be fixed - as bleach does not actually reverse the chemical process. To quote from here:- http://www.vintagecomputing.com/index.php/archives/189 "Bleach - I’ve had very limited success with letting bleach sit on Macintosh cases. When it does work, it’s difficult to get a uniform effect unless you can soak the whole piece in bleach equally. This probably damages the structure of the plastic and might cause another type of yellowing — so beware! " I have never understood why third parties have not yet cottoned on to the idea of making 'replica cases' for retro consoles - they certainly make enough clone systems! ...I would love to have a replica Super Famicom case with a nicely widened cartridge slot to accept US SNES games...