Emu XL-7 & MP-7 User's Group

Hello everybody, I'm new to this group, I 've bought a second hand 
XL-7 yesterday and have a very strange problem. Allready did a 
search but couldn't find anything related to this (sorry if it has 
been handeld before)

Here is my problem:

If I turn on the unit using the hard-wired switch on the back, the 
unit turns on (most of the time) then, if I twist the volume knop 
from full down to half-way, or sometimes just barely touch the 
volume knob it goes into automatic power-down.

Then, when I franticly twist the volume knob, it usually goes out of 
this power down, yesterday I was to late and it powered down. 
Pushing the power knob on the front pannel doesn't do anything, and 
after a lot of twisting the volume knob, and using the switch on the 
back I got it to power up again. However the front pannel power on 
button doesn't seem to do anything, and this morning I couldn't get 
it to power on at all.

Does anybody know of this problem? Is the volume knob somehow 
connected to the soft power switch? It's the strangest thing I have 
ever seen on a piece of gear?!

Any help would be greatly appriciated, I would love to dive into 
this machine but allready I am afraidof using it live, seeing it 
could power down just by touching the volume knob...

Thanks in advance,

Ilja

well the power button and volume knob share the same circuit board 
with the headphone jack i think. so they must be having some sort of 
bad relationship(do they share the same circuit board? havent looked 
in a while) too bad i have no idea why it's doing that. im no 
electrician.

good luck


--- In xl7@yahoogroups.com, "tekno_freax" <tekno_freax@y...> wrote:
>
> Hello everybody, I'm new to this group, I 've bought a second hand 
> XL-7 yesterday and have a very strange problem. Allready did a 
> search but couldn't find anything related to this (sorry if it has 
> been handeld before)
> 
> Here is my problem:
> 
> If I turn on the unit using the hard-wired switch on the back, the 
> unit turns on (most of the time) then, if I twist the volume knop 
> from full down to half-way, or sometimes just barely touch the 
> volume knob it goes into automatic power-down.
> 
> Then, when I franticly twist the volume knob, it usually goes out 
of 
> this power down, yesterday I was to late and it powered down. 
> Pushing the power knob on the front pannel doesn't do anything, 
and 
> after a lot of twisting the volume knob, and using the switch on 
the 
> back I got it to power up again. However the front pannel power on 
> button doesn't seem to do anything, and this morning I couldn't 
get 
> it to power on at all.
> 
> Does anybody know of this problem? Is the volume knob somehow 
> connected to the soft power switch? It's the strangest thing I 
have 

> ever seen on a piece of gear?!
> 
> Any help would be greatly appriciated, I would love to dive into 
> this machine but allready I am afraidof using it live, seeing it 
> could power down just by touching the volume knob...
> 
> Thanks in advance,
> 
> Ilja
>

--- In xl7@yahoogroups.com, "malik" <malik_martin@h...> wrote:
>
> well the power button and volume knob share the same circuit board 
> with the headphone jack i think. so they must be having some sort 
of 
> bad relationship(do they share the same circuit board? havent 
looked 
> in a while) too bad i have no idea why it's doing that. im no 
> electrician.
> 
> good luck
> 
> 
Hi Malik, thanks!

Thanks for a little insight, I'm no electrician either, but I also 
noticed some humm on the headphone socket, and have read some 
messages regarding this. Guess I'll be opening my unit tonight (and 
crossing my fingers I don't mess it up more..)

If anayone else has any advice, I'll be happy to here it, I'll post 
a message after tonight with my findings,.. or possible to vent some 
frustation ;-)

Ilja

Hello to France !

This solution to the humm noise is at :
http://fr.forums.audiofanzine.com/apprendre/mailing_forums/index,idtopic
,151072,page,1.html#2511418

Best regards !

--- In xl7@yahoogroups.com, "cimerian83" <cimerian83@y...> wrote:
>
> Hello to France !
> 
> This solution to the humm noise is at :
> 
http://fr.forums.audiofanzine.com/apprendre/mailing_forums/index,idto
pic
> ,151072,page,1.html#2511418
> 
> Best regards !
>

Hello Cimerian83,

My knoweldge of the French language is almost non-existant, I'm from 
the Netherlands, I did find an interesting link to a software 
editor, so thanks for that.

Further, I found out yesterday that the soft on/off button only 
works when the volume is between 0% and 50% full. Any higher and the 
on-off button doens't work at all. Also it can power down by 
twisting the volume knob from 100% position down to the 0%-50% 
range. So there is definitly some strange connection between these 
two parts... maybe some short-circuit between them.

Does anybody ever experianced this? I hope its a hardware problem, 
at least that can be fixed!

Thanks,

Hi, 
 
As i 'm french user of this group i will try to explain the manip to solve you're problem:
 
In fact the volume knob and the jack headphone are "linked". Many user have problem with a "buzz" noise in the headphone. Maybe your problem have the same "source". It apppear that the jack headphone isn't corectly electricaly isolated from the box. So you will have to open your box and to throw off the jack headphone and the light (  the contact of the vomume knob too ). After the but is to isolate these components from the box ( all the components ). To do that you can simply buy an isolant varnish and to cover the pieces which are in contact with the box ( the part of the box too ). After doing this operation it seams that the problem of the "buzz" has been deseappear. Maybe it will work for your volume knob's problem.
 
Hope that you anderstand my translation.
 
@+
 


tekno_freax <tekno_freax@...> a écrit :
--- In xl7@yahoogroups.com, "cimerian83" <cimerian83@y...> wrote:
>
> Hello to France !
> 
> This solution to the humm noise is at :
> 
http://fr.forums.audiofanzine.com/apprendre/mailing_forums/index,idto
pic
> ,151072,page,1.html#2511418
> 
> Best regards !
>

Hello Cimerian83,

My knoweldge of the French language is almost non-existant, I'm from 
the Netherlands, I did find an interesting link to a software 
editor, so thanks for that.

Further, I found out yesterday that the soft on/off button only 
works when the volume is between 0% and 50% full. Any higher and the 
on-off button doens't work at all. Also it can power down by 
twisting the volume knob from 100% position down to the 0%-50% 
range. So there is definitly some strange connection between these 
two parts... maybe some short-circuit between them.

Does anybody ever experianced this? I hope its a hardware problem, 
at least that can be fixed!

Thanks,






SPONSORED LINKS 
Drum machines Electronic instrument Electronic drum machine Electronic music Electronic musical instrument Electronic instrument cases 

---------------------------------
YAHOO! GROUPS LINKS 


    Visit your group "xl7" on the web.
  
    To unsubscribe from this group, send an email to:
 xl7-unsubscribe@yahoogroups.com
  
    Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. 


---------------------------------



		
---------------------------------
 Appel audio GRATUIT partout dans le monde avec le nouveau Yahoo! Messenger
 Téléchargez le ici !  

[Non-text portions of this message have been removed]

Thank you very much!

Indeed it could be related, if there is some electrical "current-
leak" on that PCB, it sends out an OFF-signal if I turn the volume 
knob! There is some logic in that, at least to me (no expert here) 
I'll give it a try!


--- In xl7@yahoogroups.com, BEAUFILS Adrien <fatalojyxvsfacial@y...> 
wrote:
>
> Hi, 
>  
> As i 'm french user of this group i will try to explain the manip 
to solve you're problem:
>  
> In fact the volume knob and the jack headphone are "linked". Many 
user have problem with a "buzz" noise in the headphone. Maybe your 
problem have the same "source". It apppear that the jack headphone 
isn't corectly electricaly isolated from the box. So you will have 
to open your box and to throw off the jack headphone and the light 
(  the contact of the vomume knob too ). After the but is to isolate 
these components from the box ( all the components ). To do that you 
can simply buy an isolant varnish and to cover the pieces which are 
in contact with the box ( the part of the box too ). After doing 
this operation it seams that the problem of the "buzz" has been 
deseappear. Maybe it will work for your volume knob's problem.
>  
> Hope that you anderstand my translation.
>  
> @+
>  
> 
> 
> tekno_freax <tekno_freax@y...> a écrit :
> --- In xl7@yahoogroups.com, "cimerian83" <cimerian83@y...> wrote:
> >
> > Hello to France !
> > 
> > This solution to the humm noise is at :
> > 
> 
http://fr.forums.audiofanzine.com/apprendre/mailing_forums/index,idto
> pic
> > ,151072,page,1.html#2511418
> > 
> > Best regards !
> >
> 
> Hello Cimerian83,
> 
> My knoweldge of the French language is almost non-existant, I'm 
from 
> the Netherlands, I did find an interesting link to a software 
> editor, so thanks for that.
> 
> Further, I found out yesterday that the soft on/off button only 
> works when the volume is between 0% and 50% full. Any higher and 
the 
> on-off button doens't work at all. Also it can power down by 
> twisting the volume knob from 100% position down to the 0%-50% 
> range. So there is definitly some strange connection between these 
> two parts... maybe some short-circuit between them.
> 
> Does anybody ever experianced this? I hope its a hardware problem, 
> at least that can be fixed!
> 
> Thanks,
> 
> 
> 
> 
> 
> 
> SPONSORED LINKS 
> Drum machines Electronic instrument Electronic drum machine 
Electronic music Electronic musical instrument Electronic instrument 
cases 
> 
> ---------------------------------
> YAHOO! GROUPS LINKS 
> 
> 
>     Visit your group "xl7" on the web.
>   
>     To unsubscribe from this group, send an email to:
>  xl7-unsubscribe@yahoogroups.com
>   
>     Your use of Yahoo! Groups is subject to the Yahoo! Terms of 
Service. 
> 
> 
> ---------------------------------
> 
> 
> 
> 		
> ---------------------------------
>  Appel audio GRATUIT partout dans le monde avec le nouveau Yahoo! 
Messenger

>  Téléchargez le ici !  
> 
> [Non-text portions of this message have been removed]
>