What would we Mellotronists do without all the expertise on this list? Thanks folks!
Bernie
--- In newmellotrongroup@yahoogroups.com, lsf5275@... wrote:
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> Actually, you led him to this one.
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> In a message dated 2/26/2012 1:55:59 A.M. Eastern Standard Time,
> pocotron@... writes:
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> Frank-
> You taught us well, Obi-Wan, thank you! Looks like Bernie found it.
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> -Bruce D.
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> From: "lsf5275@..." <lsf5275@...>
> To: newmellotrongroup@yahoogroups.com
> Sent: Saturday, February 25, 2012 12:04 AM
> Subject: Re: [newmellotrongroup] Grounding Issue?
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> Good call Bruce... I didn't see your post or I wouldn't have repeated the
> information.
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> Frank
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> In a message dated 2/25/2012 1:30:16 A.M. Eastern Standard Time,
> pocotron@... writes:
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> 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.
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> Hope this helps, best of luck. More sugar!
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> -Bruce Daily
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> From: john barrick <barrickjohn262@...>
> To: newmellotrongroup@yahoogroups.com
> Sent: Friday, February 24, 2012 1:55 PM
> Subject: Re: [newmellotrongroup] Grounding Issue?
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> Try putting it in the C position and then wiggle the cable a bit while
> playing a note. That may reproduce it.
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> On Fri, Feb 24, 2012 at 2:53 PM, john barrick <_barrickjohn262@..._
> (mailto:barrickjohn262@...) > wrote:
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> Maybe the cable going from the head block to the preamp?
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> On Fri, Feb 24, 2012 at 2:45 PM, tron400 <_tron400@..._
> (mailto:tron400@...) > wrote:
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> #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
> -
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> john barrick
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> ∗Leo got it right the first time∗
> ∗then he added a second pickup and got it righter∗
>