MOTM

The caps were melted due to soldering, not of the circuit.

I use the ones from Mouser.

Paul S.

----- Original Message ----- 
From: "lexvortex" <lexvortex@...>
To: <motm@yahoogroups.com>
Sent: Tuesday, August 26, 2008 3:53 PM
Subject: [motm] MOTM 440 problem


> Hi everybody, I just finished building a MOTM 440 filter but am having
> some problems with it.  I bought some polystyrene caps from a surplus
> place that didn't have any voltage rating on them like pauls does on
> his polystyrene caps (I also have a MOTM 440 built by him, loved it so
> much I needed another!).  After powering it up and trying to use it
> there was no sound only what sounded like a quiet bleed through of the
> oscillator hooked up to it which the none of the controls had any
> effect on.  I took it back to the bench and started trouble shooting
> and what I found was that some of the polystyrene caps were melted, I
> assume because they had too low a voltage rating (they are smaller
> than Pauls).  
> 
> What I want to know is if this could have damaged any of the ICs?  I'm
> gonna see if I can find some more polystyrene caps with a higher
> voltage rating but I'd be surprised if the place has them :(
> 
> Thanks a lot for any help :)
> 
> Dave  
> 
> 
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