The Mellotron Group

Hi guys,

My M400 # 126 has been behaving somewhat strange the last couple of days; 

After the warmup ( she still has a CMC 4 card,runs pretty stable  ),she'll play fine,no probs.Sometimes,however,after some time,there'll be a 'fade out' of direct signal and at the same time a 'fade in' of noise.The direct sound remains at low level,the noise at high level.Any idea hat could cause this?A preamp issue or something with the output stage?

The machine has been restored recently, a great job,also fixed the headblock to preamp lead issue,which I believe is one of the possible reasons for the behaviour mentioned above.

The only thing I can think of is that it maybe has something to do with my swell pedal,had that refitted with a new pot recently.

Any ideas?

Cheers,H

In a message dated 7/27/2008 3:12:15 P.M. Eastern Daylight Time,  
hessel@soundscape.nl writes:

The  only thing I can think of is that it maybe has something to do with my 
swell  pedal,had that refitted with a new pot recently.




Try unplugging the swell pedal. Please report back after doing so.
 
Frank



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I'll try that 

From: newmellotrongroup@yahoogroups.com
[mailto:newmellotrongroup@yahoogroups.com] On Behalf Of lsf5275@aol.com
Sent: maandag 28 juli 2008 6:17
To: newmellotrongroup@yahoogroups.com
Subject: Re: [newmellotrongroup] M400 noise

 

In a message dated 7/27/2008 3:12:15 P.M. Eastern Daylight Time,
hessel@soundscape.nl writes:

The only thing I can think of is that it maybe has something to do with my
swell pedal,had that refitted with a new pot recently.

 

Try unplugging the swell pedal. Please report back after doing so.

 

Frank





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<http://www.fanhouse.com/fantasyaffair?ncid=aolspr00050000000020>  for
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In a message dated 7/27/2008 3:12:15 P.M. Eastern Daylight Time,  
hessel@soundscape.nl writes:

My  M400 # 126 has been behaving somewhat strange the last couple of days;  

After the warmup ( she still has a CMC 4 card,runs pretty stable  ),she'll 
play fine,no probs.Sometimes,After the warmup ( she still has a CMC 4 card,runs 
pretty stable  ),she'll play fine,no probs.Sometimes,<WBR>however,after some 
time,there'll be  a 'fade out' of direct signal and at the same time a 'fade 
in' of noise.The  direct sound remains at low le

The  machine has been restored recently, a great job,also fixed the headblock 
to  preamp lead issue,which I believe is one of the possible reasons for the  
behaviour mentioned above.

The only thing I can think of is that it  maybe has something to do with my 
swell pedal,had that refitted with a new pot  recently.

Any ideas?

Cheers,H




In all seriousness, you might want to check the PAL connecter that plugs  
into the preamp to make sure you the shield and center wire are making proper  
contact.



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With the machine on?

-----Oorspronkelijk bericht -----
Van: lsf5275@aol.com
Aan: newmellotrongroup@yahoogroups.com
Verzonden: 28-7-08 16:11
Onderwerp: Re: [newmellotrongroup] M400 noise

 
In a message dated 7/27/2008 3:12:15 P.M. Eastern Daylight Time,  
hessel@soundscape.nl writes:

My  M400 # 126 has been behaving somewhat strange the last couple of days;  

After the warmup ( she still has a CMC 4 card,runs pretty stable  ),she'll 
play fine,no probs.Sometimes,After the warmup ( she still has a CMC 4 card,runs 
pretty stable  ),she'll play fine,no probs.Sometimes,<WBR>however,after some 
time,there'll be  a 'fade out' of direct signal and at the same time a 'fade 
in' of noise.The  direct sound remains at low le

The  machine has been restored recently, a great job,also fixed the headblock 
to  preamp lead issue,which I believe is one of the possible reasons for the  
behaviour mentioned above.

The only thing I can think of is that it  maybe has something to do with my 
swell pedal,had that refitted with a new pot  recently.

Any ideas?

Cheers,H




In all seriousness, you might want to check the PAL connecter that plugs  
into the preamp to make sure you the shield and center wire are making proper  
contact.



**************Get fantasy football with free live scoring. Sign up for 
FanHouse Fantasy Football today.      
(http://www.fanhouse.com/fantasyaffair?ncid=aolspr00050000000020)

In a message dated 7/28/2008 1:52:11 P.M. Eastern Daylight Time,  
hessel@soundscape.nl writes:

With  the machine on?




Please do it with the machine off. Wiggling wires is not usually a good  idea 
when it is hot. The other way to check is with an ohm meter. Unplug the  head 
block and connect one lead to the connector center pin and the other  end on 
the center wire where it is soldered to the tape heads. You should get a  null 
reading. Wiggle the wire and check again. Same thing with the sleeve. If  you 
get anything else, your connection is bad.
 
Frank



**************Get fantasy football with free live scoring. Sign up for 
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Thanx Frank 

 

I've isolated the problem ,it's gotta be the pedal.I ran the machine
yesterday without it and  it  behaved great, no audio drops.

 

Do you know if the pedal can cause some kind of short or feedback that
results in the level drop / noise increase?

Mind that, when when the problem occurs, and I disconnect the pedal, thye
machine  stays at low level / high noise.

 

H

From: newmellotrongroup@yahoogroups.com
[mailto:newmellotrongroup@yahoogroups.com] On Behalf Of lsf5275@aol.com
Sent: dinsdag 29 juli 2008 23:02
To: newmellotrongroup@yahoogroups.com
Subject: Re: [newmellotrongroup] M400 noise

 

In a message dated 7/28/2008 1:52:11 P.M. Eastern Daylight Time,
hessel@soundscape.nl writes:

With the machine on?

 

Please do it with the machine off. Wiggling wires is not usually a good idea
when it is hot. The other way to check is with an ohm meter. Unplug the head
block and connect one lead to the connector center pin and the other end on
the center wire where it is soldered to the tape heads. You should get a
null reading. Wiggle the wire and check again. Same thing with the sleeve.
If you get anything else, your connection is bad.

 

Frank





  _____  

Get fantasy football with free live scoring. Sign up
<http://www.fanhouse.com/fantasyaffair?ncid=aolspr00050000000020>  for
FanHouse Fantasy Football today.