Re: Apple III Power Supply

[cps@access.digex.net (Chris Smolinski)]

In article <1996Mar18.112441.5027@ned.cray.com>, else@cray.com wrote:

> Hi, 
> 
> I picked up a couple of old Apple III's at a swap meet a few years back (I
> thought it'd be kind of neat to have one -- just for fun).
>  
> Anyhow, I'm just getting around to trying to fix them.  Both of them have
> bad power supplies.  The supplies make a audible clicking noise that happens 
> about 5 clicks/second.  Also, the light on the drive flashes at this same
> frequency.  The supplies act the same even when they are removed from
the Apple III.
> I don't have an oscilloscope or a schematic for the supply, so I'm
wondering if
> someone has seen this same problem and can maybe point me to the bad
component(s)...
>  

It's possible that the supplies are not bad - they are switchers, and
often won't work if not connected to a load. Try connecting the outputs to
a reasonable load, and see if they function.

Chris

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