Another option (albeit slow acting, pro/con) is using
straight 3%
hydrogen peroxide + UV like you get at the drug store. I used this
method on a few of my Commodore 128D pieces that were yellowed. It does
act very slow, but that might not be such a bad thing considering
people have had issues with blotchiness with stronger treatment
How much slower? Days vs. hours? Also what happens when you leave it on
overnight? Or do you use a UV light? Thanks.
-Ali