MicroVAX 3100 Model 95 Damaging SIMMs?

[Rob Jarratt]

> -----Original Message-----
> From: cctalk-bounces at classiccmp.org [mailto:cctalk-
> bounces at classiccmp.org] On Behalf Of Richard
> Sent: 18 March 2011 02:56
> To: cctalk
> Subject: Re: MicroVAX 3100 Model 95 Damaging SIMMs?
> 
> 
> In article <008301cbe4f8$36678f50$a336adf0$@ntlworld.com>,
>     "Rob Jarratt" <robert.jarratt at ntlworld.com> writes:
> 
> > No I have not, sounds like that is my next step, although I don't
> > think I have the equipment to check if the PSU is operating to spec, I
> > can visually check components.
> 
> Supply voltages can be checked with a simple voltmeter.  With dummy
> resistor loads on the PSU you can check current supplied by measuring the
> voltage across the resistor load.
> --
> "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download
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> 
>       Legalize Adulthood! <http://legalizeadulthood.wordpress.com>

I have just been checking the outputs from the PSU and was wondering how
"good" they are. Here is what I measured:

On the standard Molex connector the 5V output is around 5.3V, the 12V output
is pretty much dead on. On the CPU power connector I measured these
voltages:

5.0V
5.3V
5.3V
-12.46V
-5.98V
5.31V
12.04V
5.31V

I am not sure what the nominal voltages are supposed to be on this connector
(the -5.98 looks a bit suspicious) and how much out of tolerance they are.
How do these voltages look?

Regards

Rob