Deyellowing Old Systems or Computers.

Discussion in 'Computer Hardware, Devices and Accessories' started by astrangeone, Dec 10, 2012.

Dec 10, 2012
  1. astrangeone
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    Member astrangeone GBAtemp Advanced Maniac

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    Has anyone seen this?

    http://retr0bright.wikispaces.com/Retr0Bright Gel

    It was basically found that the old flame retardant in old plastics (computers, SNESes, whatever of that era) reacted to UV light and degraded into another compound, causing the "yellowing" of older computers. It was found that a mixture of hydrogen peroxide, Oxi-Clean (oxygen booster) and UV light/sunlight could reverse the yellowing permanently!

    There are three recipes on the site - apparently the original gel recipe (with glycerine and xanthan gum) dries out less quickly and works better.

    It was also suggested that you set up a "de-yellowing" chamber consisting of - UV light source, large transparent container, cling wrap/food wrap, some water at the bottom of the container to keep the gel wet.

    Over winter break, I'm going to do some experiments. I have a ton of old hardware (urm...maybe Pentium 2 computers) that I can end up doing with these. The Microsoft optical mouse I have also needs a turn de-yellowing.

    Update: I found Xanthan gum at the local Bulk Food retailer (Bulk Barn, if you are in Canada - it's in a package, but it's still worth it). You might be able to find it at a health food store or the gluten free section (it's a common thickener).

    Also, glycerine is found at the drugstore/chemist...I got mine at Shopper's Drug Mart.

    I found that deyellowing on smaller pieces works well with just a few glugs of hydrogen peroxide and a pinch of Oxi-clean. :)
     
  2. Originality

    Member Originality Chibi-neko

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    Whilst I understand that yellow plastics aren't pretty... I wouldn't want to use HOOH on them. Better to just get a new case, one that's not made of plastic and doesn't suck at ventilation.
     
  3. ShadowSoldier

    Member ShadowSoldier GBAtemp Guru

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    Pretty old discovery.

    Why would it be better exactly?
     
  4. Originality

    Member Originality Chibi-neko

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    Call me wasteful, but I treat all sucky cases like trash. I would rather replace with a good case than use hazardous chemicals to clean them up.

    Of course, this is all in my opinion.
     
  5. raulpica

    Supervisor raulpica With your drill, thrust to the sky!

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    Still have to use it, but it was invented by Amiga enthusiasts (and I'm a huge Amiga fan :P) so I knew of it since a few years... works good from what I've seen. Really good, in some cases.
     
  6. MushGuy
    This message by MushGuy has been removed from public view by Cyan, Dec 11, 2012, Reason: one word post. ~Cyan.
    Dec 10, 2012
  7. astrangeone
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    Member astrangeone GBAtemp Advanced Maniac

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    Lol. I didn't read it like that.

    It's good for classic/retro gamers as well. (My suggestion is to use really weak hydrogen peroxide....maybe the 3% solution?)

    Canada is crazy strict about the concentration of hydrogen peroxide - so the strongest stuff I can find is 6% at Walmart.
     
  8. geishroy

    Banned geishroy Banned

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    those concentrations of h2o2 aren't considered very hazardous.
     
  9. Originality

    Member Originality Chibi-neko

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    Hmm... Didn't think about that - the concentrations in other countries are lower than what I've seen when growing up.
     
  10. Amber Lamps

    Banned Amber Lamps Banned

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    Keep in mind that once a SNES is yellowed, the plastic is so brittle that when you do anything to it, it will literally crumble. Basically imho any yellowed SNES deck is ruined.
     
  11. ZAFDeltaForce

    Member ZAFDeltaForce Specialist

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    Oh thank goodness. I can finally clean up SNES
     
  12. astrangeone
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    Member astrangeone GBAtemp Advanced Maniac

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    Update: I found Xanthan gum at the local Bulk Food retailer (Bulk Barn, if you are in Canada - it's in a package, but it's still worth it). You might be able to find it at a health food store or the gluten free section (it's a common thickener).

    Also, glycerine is found at the drugstore/chemist...I got mine at Shopper's Drug Mart.
     

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