how to troubleshoot? Not all of us have trustfunds!

[Philip]

You Certanly Do: you need all that gear
and some special linses to!
If you just got some normal camera how are you going to brag about it for your nigthbor....:=)
-
i still woulduse i osc for monitoring lfo ,audiosv
Partly becuase i wouldent want more cables connected to mycomuter and  wouldent risk inputing 10v in my audiocard
----- Original Message ----- 
From: "Theo" <t.hogers at home.nl>
To: <synth-diy at node12b53.a2000.nl>; "Paul Perry" <pfperry at melbpc.org.au>
Sent: Sunday, January 14, 2001 2:01 PM
Subject: Re: how to troubleshoot? Not all of us have trustfunds!


> I second this.
> There is lots that can be done with only a DMM and maybe a set of small
> earphones to trace the signal.
> (best old fashion crystal high Z type)
> And for monitoring a LFO or audio frequent signals a free/share-ware soft
> scoop will do nicely.
> 
> Or do you really need that Pentax ultra zoom computer controlled motordrive
> with night vision look it cost me $$$$$ photo camera  too take a few family
> snaps?
> 
> Cheers,
> Theo
> 
> 
> ------------------
> ----- Original Message -----
> From: Paul Perry <pfperry at melbpc.org.au>
> To: <synth-diy at node12b53.a2000.nl>
> Sent: Sunday, January 14, 2001 12:16 PM
> Subject: Re: how to troubleshoot? Not all of us have trustfunds!
> 
> 
> > At 10:08 PM 13/01/01 -0800, RFAHL wrote:
> >
> > >Also, couldn't you use an audio cable as a probe between the circuit and
> an
> > >audio amp (with a DC blocking cap for protection), using your ears
> instead
> > >of your eyes?
> > >
> > This is very good advice indeed.
> > Back in the days of discrete radios, and even today for valve amps,
> > some people would permanently set up a 'test' one with links between
> > the setions, so you could send & receive signals to the unit being
> > fixed.
> > I'm suprised how often it is possible to 'diagnose' a circuit without
> > ANY test gear at all, when people on the lists ask what 'might be wrong'.
> > The best advice i ever saw, went along the line that the 'broken' gear
> > you are working on isn't really 'broken', it is just that it has somehow
> > been transformed into some OTHER circuit. And, you have to find what
> > THIS circuit is. The reverse logic here often leads to insight.
> >
> > http://polly.phys.msu.su/~zeld/oscill.html
> > was mentioned on the guitar fx bbd as a real time audio scope for an
> > IBM soundcard. I havn't tried it myself.
> >
> > paul perry melbourne australia
> >
>