Cgs synth

Could i have cooked them getting them out maybe ?

Would it be worth replacing them ?

Stephen


________________________________
From: "sasami@..." <sasami@...>
To: cgs_synth@yahoogroups.com
Sent: Saturday, September 22, 2012 6:30 PM
Subject: Re: [cgs_synth] CGS 116 ADSR question

>Hi Ken
>
>I have everything working on the MARSH panel except the ADSR's.
>
>I have installed the transistor marked in red on the build page backwards.

I used a BC547 there though not a 2N3565.

If you used a BC547, it needs to be installed the right way around for the
transistor marked in red.

>Everywhere else that required a 2N3565 , i used a 2N3904 in it's correct

orientation.

>
>Everywhere else that required a 2N5089 , i used a 2N3904 in it's correct

orientation.

>
>Everywhere else that required a 2N4250 , i used a BC557 in reverse orientation.

These orientations all seem right to me.

>I'm getting an led constantly lit at power up.
>
>Could any of this be the problem ?

Maybe. The backwards BC547 might be zenering.

Ken
__________________________________________________________
Ken Stone sasami@... otherunicorn@...
Modular Synth PCBs for sale <http://www.cgs.synth.net/>
Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>




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