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Weird MK3 PCB problem.
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Savannan:
What is freeze spray and how does it work?

Just currious...
MonMotha:
It's basically a canned air duster turned upside-down (and you can in fact do just that).  Basically, it's a liquid spray that rapidly evaporates (often before it even hits what you're pointing it at), and, in the process of doing so, gets REALLY cold.  "Freeze spray" is an accurate term; it will easily cause frost.

Spraying stuff with it causes a very rapid change in temperature, which can cause cracks due to uneven thermal contraction.  However, it can also be quite effective in locating problems due to thermal issues like you appear to be having for the same reason.
AlienInferno:
Dang it!  MonMotha beat me too it by a couple of minutes.   :hissy:

I'm not sure what the freeze spray would be.  I'm guessing something like the wart freezing remover stuff or maybe even a can of compressed air turned upside down.

Also I'm assuming it works by spraying particular areas/components after everything has been turned on/warmed up to see if you can replicate the problem.  Since everything expands when warm (and your issue goes away) the freeze spray would cause it to shrink back down and cause the issues to reappear as if the machine was cold still.  Might be usefull to pinpoint the damaged areas.

I would let someone more knowledgable to chime in though before trying it as I'm probably 100% wrong.
mgb:
If you choose to use freeze spray, its available at Radio Shack.
lilshawn:
... yah, anyway, enough theory...

 what you want to do is get your board warmed up, and running. then, using one of those duster cans turned upside down, spray small bursts at various components until the game fails, freezes, displays garbage, etc... then you have where to start looking.
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