MOTM

This is one of 2 things:

a) bad solder joint (most likely).
b) a tiny crack in the pc board trace

The S&H is the LF398 IC U6. It can be the Track/Hold switch soldering, or 
the wiring on the CLK (J5).

Paul S.

----- Original Message ----- 
From: "loopcycle" <loopcycle@...>
To: <motm@yahoogroups.com>
Sent: Monday, October 01, 2007 12:03 PM
Subject: [motm] funny problem with s&h module


> when i screw all four corners down to my stooge rails, the s&h does not 
> sample.
> it just holds.  if i tap on the front panel with my finger, it samples the
> input in time with my fingertaps.
>
> i thought this was cool for about 5 minutes, but now i want it to work 
> right
> again.
>
> if i take a couple screws out, the s&h works normally.
> so, i think some pressure on the frontpanel must be aggravating a poor 
> solder
> joint.
>
> instead of touching all the solder points on the board, are there a few
> particularly suspect i might go after first?  maybe the pots first?  any
> suggestions welcome, thanks!
>
>
> 
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