[Cube] Question about Gray Striped Screen of Death

[John Bryan]

I have fallen victim to the Gray Striped Screen of Death, as noted,  
among other places, here :

        http://www.cubeowner.com/forums//index.php? 
showtopic=8050&hl=death

My own screen shot here :       http://idisk.mac.com/johnbryan/Public/ 
greyscreen.pdf

I have done the Green Slime lube treatment on the fan a couple of  
years ago, and that worked great.  It recently restarted the fan  
noise a bit, but not bad, but worse was the GSSoD.  Treated it again  
with the Green Slime, but still have the problem, although the fan is  
quieter.

My question is:

Should I be able to 1) put a new fan on the ATI Radeon, and/or 2) get  
a base fan for the Cube, and/or get a heatsink for the GPU, or am I  
 >> absolutely <<  facing haveing to scrounge for some card that is  
in stock somewhere and will fit in this thing?  I mean, is this  
symptom a sign that the Radeon is fried, or can I somehow make it  
better?

BTW, Just installed Tiger tonight and the card hasn't acted up all  
night.  Don't know what is up with that.

G4 450MHz Cube, 832MB RAM, 80 GB Seagate B'cuda V, BTO ATI Radeon  
32MB (w fan)

thanks,
jb