The Mellotron Group

Looks like it was one of the spring hooks that holds the head block in place. One of them was not in its hole.

Bernie

--- In newmellotrongroup@yahoogroups.com, "tron400" <tron400@...> wrote:
>
> Wouldn't you know, it's not acting up at the moment. I'll have to leave it running for a while.
> 
> Jerry put a new cable in when he refurbished it. The old one had the screeching cable rot.
> 
> BTW, anyone have an empty frame laying around?
> 
> Bernie
> 
> --- In newmellotrongroup@yahoogroups.com, lsf5275@ wrote:
> >
> > Good call Bruce... I didn't see your post or I wouldn't have repeated the  
> > information.
> >  
> > Frank
> >  
> >  
> > In a message dated 2/25/2012 1:30:16 A.M. Eastern Standard Time,  
> > pocotron@ writes:
> > 
> >  
> >  
> >  
> >  
> > Hey Bernie-
> >   The headblock must remain electrically isolated from the  chassis to 
> > avoid this.
> >   Last time this happened to me I had a missing headblock  roller (previous 
> > owner's fault, which I fixed).  Therefore, the headblock  was rubbing the 
> > chassis, which changed the hum when different tracks were  selected.  A bad 
> > cable can also cause this problem, but it is usually  screechy(not good for 
> > tapes).  Check the w-clips that hold down the  headblock, their centering 
> > washers may be off-set or worn through, and may be  causing the short.  You may 
> > have to remove the headblock to fix this  one.
> >   The track selector mechanism can also cause this  short.  However, if 
> > this is the machine that Jerry Korb refurbished, he  probably already fixed 
> > this.
> >  
> >   Hope this helps, best of luck.  More  sugar!
> >  
> >   -Bruce Daily
> >  
> > 
> > 
> > 
> >  
> >  
> > 
> > From: john  barrick <barrickjohn262@>
> > To: newmellotrongroup@yahoogroups.com  
> > Sent: Friday, February 24,  2012 1:55 PM
> > Subject: Re:  [newmellotrongroup] Grounding Issue?
> > 
> > 
> > 
> >  
> >  
> > Try putting it in the C position and then wiggle the cable a bit while  
> > playing a note.  That may reproduce it.
> > 
> > On Fri, Feb 24, 2012 at 2:53 PM, john  barrick <_barrickjohn262@_ 
> > (mailto:barrickjohn262@) >  wrote:
> > 
> > Maybe the cable going from the head block to  the preamp?  
> >  
> > 
> > 
> > On Fri, Feb 24, 2012 at 2:45 PM, tron400  <_tron400@_ 
> > (mailto:tron400@) >  wrote:
> > 
> > 
> >  
> >  
> >  
> > #500 has had an intermittant hum for a while now. I thought that  maybe it 
> > was related to the volume pedal jack, but I noticed yesterday  that the 
> > volume of the hum changes when I move the track selector. Track C  doesn't seem 
> > to have any hum, but Tracks A and B do. Any idea what the  cause might  be?
> > 
> > Bernie
> > - 
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > john barrick
> > 
> > 
> > *Leo got it right the first time*
> > *then he added a second pickup and got it  righter*
> >
>