Hi, I'm new...

[Tony Duell]

> Forgot to add:
> 
> 
> Scuzz hasn't had any problems with my original HD on
>  his A600.

OK, so the hard drive doesn't seem to have been the problem.

> 
> 
> and here's the reason I thought it might be a 
> resistor:
> 
> 
> 
> "		          	The different PSU would not cause
>  overheating inside the A600.  Since the PSU is 
> located separately, the heat it dissipates 
> would be outside of the machine.  Even though

This assumes the output voltages of the 2 PSUs are the same. I believe 
they are, but can;'t easily check.

> the PSU is capable of supplying more power, it
> will only output the power that is needed.

Correct. These are constant voltage PSUs, the load (in this case the 
computer) detemines the current drawn, and thus the power.


> I would take off the top lid of the computer 
> and try to pinpoint where exactly the heat is 
> coming from.  There could be some components

Me too. 

> that might have shorted out and is causing 
> the power supply to output more current.  This
> could actually be your original problem.  The 
> old A600 PSU probably wasn't able to handle 
> this current draw but the more powerful A500 
> PSU could.  If something shorted out (like a 
> resistor)  it would cause other components to 

_LIKE_ a resistor. But not necessarily a resistor.  Actually, a resistor
is the least likely thing to cause this problem. My first guess would be a
decoupling capacitor. My second would be one of the ICs -- it's possible
for ICs to break down in such a way that they draw more supply current
(and get hot) but carry on working. 

> heat up and that might be what your seeing.
> 
> Amiga install any fuses in the computer I have
> no clue.  Wouldn't have cost that much extra."

I am not sure what good that would do.

-tony