compucolor

[Tony Duell]

> 
> Vintage Computer Festival wrote:
> 
> > On Sat, 7 May 2005, Jim Battle wrote:
> > 
> > 
> ...
> > Mine produced smoke too :(  Where did yours smoke from?  I want to get
> > mine working again.  It seemed to have come from the CRT section.  I'll
> > bet I have a smoked cap somewhere.
> 
> I didn't see any smoke.  The previous owner reported it, so it was just 
> speculation on my part that it was dust cooking off the CRT neck.

I still wonder about the diodes/capacitors (assuming a conventional 
circuit) in the raster correction area....

> 
> A very common problem reported is that the switching power supply 
> sometimes wouldn't start oscillating and it would result in a cooked 
> machine.

If an SMPSU fails to oscillate, it gives no outputs (well, an isolating 
one does anyway, and anyone who designs a computer that's not isolated 
from the mains input is criminally insane!). It will not cook anything 
else. But it'll probalby blow its own chopper transistor and assorted 
other parts...

-tony