MOTM

Hi friends,

my motm-485 (gx filter) just up & stopped working the other day.   
It's one I built myself, so I'm not shocked, of course.  I took it  
out and examined it - the only thing wrong with it I could find was  
that the 'freq' pot had been cranked a little too hard when  
tightening the nuts, and had come up from the PC board.  I replaced  
it with another pot (i had some extras) but still nothing ...

basically, I just get *extremely* quiet audio out of it ... it does  
what it's supposed to, just at almost inaudible levels.

any ideas?  anything more I should report on?  I've checked it for  
shorts, and haven't found any ...

-jonathan

On 2007-01-18 19:44 -0800, Jonathan Snipes wrote:

> my motm-485 (gx filter) just up & stopped working the other day.   
> It's one I built myself, so I'm not shocked, of course.  I took it  
> out and examined it - the only thing wrong with it I could find was  
> that the 'freq' pot had been cranked a little too hard when  
> tightening the nuts, and had come up from the PC board.  I replaced  
> it with another pot (i had some extras) but still nothing ...

Came up from PCB ? Wow. I'd look for hairline cracks in the
copper traces around the area where the stress was applied.
Visual inspection and maybe continuity tester (ohmmeter) across
the ends of each trace.

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