What Can i use to clean my duo-r so it can be nice and white again? Thanks for your help :)
I'd dip it in a tub full of lye and mek; that mixture will dissolve all manner of evidence grime and gunk. Hell, it'll even dissolve the case!
On second thought, that may be a bit too aggressive for you. If it's just a bit dirty and dusty, a soft cloth and a soft bristled brush (to get into the nooks and crannys) with a little multipurpose cleaner should do the trick. If it's yellowed, I advise you to read up on 'retrobright' cleaning (click here (https://www.pcengine-fx.com/forums/index.php?topic=7383.0) and here (https://www.pcengine-fx.com/forums/index.php?topic=6499.0)).