MOTM

Could someone please help me with this problem? Please?
Assembled a 420, it was working great, right. Left it on for a while, 
suddenly the audible frequency when self oscillating has moved way to 
the clockwise part of the dial, as in nothing audible until about 7 or 
8. tried fussing with the trimpots to no avail. didn't think it's being 
on for several hours would cause such a problem but I can't seem to 
think of anything else. could anyone suggest fixes, i was enjoying 
using it too much to be without it now.
Paul

Do you have anything plugged into the 1V/OCT or FM1 or FM2 jacks?

Moe

--- In motm@egroups.com, pow333@h... wrote:
> Could someone please help me with this problem? Please?
> Assembled a 420, it was working great, right. Left it on for a 
while, 
> suddenly the audible frequency when self oscillating has moved way 
to 
> the clockwise part of the dial, as in nothing audible until about 7 
or 
> 8. tried fussing with the trimpots to no avail. didn't think it's 
being 

> on for several hours would cause such a problem but I can't seem to 
> think of anything else. could anyone suggest fixes, i was enjoying 
> using it too much to be without it now.
> Paul

A sloppy solder on an IC pin, stooges and magnfying glasses to te 
rescue and I'm again modulating. Thanks
Paul

I use this exact same technique.

Moe

--- In motm@egroups.com, "J. Larry Hendry" <jlarryh@i...> wrote:
> You know, this brings up a good point.  I know everyone has their 
own ways
> of checking their work.  But, I have found that trying to go back 
and check
> a lot of joints after-the-fact is hard to tell where you are going 
and where
> you have been.  So, I will share something that works for me.  I 
check all
> of my joints under magnification before I trim the leads.  Then 
when I am
> happy, I trim the leads off.  So, after soldering a few parts on, I 
stop,
> inspect and clip.  Everything not clipped needs to be inspected.

You know, this brings up a good point.  I know everyone has their own ways
of checking their work.  But, I have found that trying to go back and check
a lot of joints after-the-fact is hard to tell where you are going and where
you have been.  So, I will share something that works for me.  I check all
of my joints under magnification before I trim the leads.  Then when I am
happy, I trim the leads off.  So, after soldering a few parts on, I stop,
inspect and clip.  Everything not clipped needs to be inspected.  Everything
trimmed already has been.  So, I am sure not to miss soldering any joints
that way, and I don't waste time looking over and over at the same joints.

Just my $.02
Larry

----- Original Message -----
From: <pow333@...>
To: <motm@egroups.com>
Sent: Saturday, January 20, 2001 11:12 PM
Subject: [motm] Re: Heat Death? OR Sloppy work.


A sloppy solder on an IC pin, stooges and magnfying glasses to te
rescue and I'm again modulating. Thanks
Paul