Vintage Synth Repair

great! i did print this out and put this with my oscilloscope probe, i
just haven't been into the lab at my school yet! i'll report back here
as soon as i know! thanks again!

-johnny

--- In vintagesynthrepair@...m, Malte Rogacki <gacki@...>
wrote:
>
> There are various things to check.
> 
> First of all, does any signal get to the S/H circuit at all - and
does it
> get through.
> 
> Check pin 3 of A2 (that's the input) and then pin 1 of A2 (that's the
> output of the S/H mixer); of course make sure that the fader for at
least
> one of the S/H sources is up.
> 
> Alternatively you could also just check the "S/H Mixer" modulation
routings
> from the front panel.
> 
> 
> This part verfiees that A2 actually works.
> 
> Next, check if signal enters A3 (pin 3) and if the trigger signal is
there
> (pin 5). I'm assuming the LFO works, right? Set the LFO to trigger
the S/H
> and check if there is the LFO signal at pin 5 of A3.
> 
> 
> -- 
> Malte Rogacki gacki@...
>
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> "Don't forget to TURN ON THE SYNTHESIZER. Often this is the reason
why you
>  get no sound out of it." (ARP 2600 Owner's Manual)
>
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>