Doepfer

hi Sidney,

please, can you do something about the problem of sending each message TWICE in the list? once is enough.

thanks,
best regards,       :-)
Bakis.


Bakis Sirros - Parallel Worlds / Interconnected / Memory Geist

[Doepfer_a100] group owner

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www. vu-us. com

--- On Thu, 2/17/11, Sidney <sidney_honi@yahoo.com> wrote:

From: Sidney <sidney_honi@yahoo.com>
Subject: [Doepfer_a100] Re: Can't trigger A-140 from A-190-2
To: Doepfer_a100@yahoogroups.com
Date: Thursday, February 17, 2011, 8:56 AM







 



  


    
      
      
      Mr. Doepfer. I successfully changed the A-190-2 Q1 resistor by replacing it with a BC547B transistor and the gate output is now working. But I think that the CV V/V output is not working. Is there any piece I can replace to fix this?



Thank you,



Sidney



--- In Doepfer_a100@yahoogroups.com, <yahoo@...> wrote:

>

> > I think I had plugged the A190-2 the wrong way the first time I

> > plugged it into the power bus board, and might damaged the unit.

> > It seemed to be working fine, as it was receiving midi messages

> > and activating the A110 both from the CV1 and pitch bend from

> > CV2. But the gate output problem and out of tune scale indicated

> > there is something wrong really. Maybe I will be necessary to buy

> > a new one.

> >

> > Thank you for the kind attention.

> >

> > Sidney.

> 

> If the A-190-2 was plugged in the wrong way the gate output is fried. In

> this case the collector of the npn gate output transistor is connected

> to -12V which destroys the transistor. This explains why the gate output

> does not work anymore. It is difficult to say if other sections of the

> module are defective too. You may try to replace the transistor (Q1, BC547C)

> to see if this is the only defective part. Or you send in the module for

> repair to the dealer where you purchased the device.

> 

> Best wishes

> Dieter Doepfer

>





    
     

    
    


 



  






      

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