Yellowed(brown?) Performa 550

[Torbar]

Got this from a buddy of mine,  no hard drive but at least boots to the question mark.  Very yellowed though, might be a good candidate to retrobrite

[omidimo]

Now that is a Pasta! Be very careful with the plastic, it is probably very brittle too.

 

Alternative [insane] option... spray painted black for Macintosh TV Clonery! 

[Torbar]

13 hours ago, omidimo said:

Now that is a Pasta! Be very careful with the plastic, it is probably very brittle too.

  

Alternative [insane] option... spray painted black for Macintosh TV Clonery! 

 

Yeah, that was my other thought.  Either make it black, or even some other color(gray?  wrap it in woodgrain vinyl?)

[Compgeke]

I'm all for woodgrain chassis and gold buttons. It'd certainly be unique  .

[Torbar]

I have some leftover woodgrain vinyl from a woodgrain pentium build I did a while ago(inspired by LGR's woodgrain 486)

Luckily that stuff is pretty easy to remove, so I might give it a try

[Paralel]

The brown proves that once they are yellow from photolytic breakdown of the fire retardants, they subsequently oxidize, with the final color being a medium brown. It makes sense. Yellow chromophores almost universally become brown as a result of subsequent oxidation. That would make heat your worst enemy once they have turned yellow, since that would accelerate the oxidative process. The good thing is that we can be sure the final color is brown, oxidation should reduce the chromophore to its base energy state, where it doesn't respond to any further processes.

Edited April 17, 2019 by Paralel