Doepfer

hi - through a lack of blank panels a stray cable end wandered into the back of my a155 while it was on and now an odd problem has occured:
the bottom row of cv  always  glides from step 8 to step 1 whether glide control is on or off or glide knob is in any position. 
i have made a few modules and am perfectly happy to replace any components neccesary. ive tried swopping the ICs on the bottom row with those on the top row but to no effect, if anyone has any ideas to help please let me know .......
cheers 
dave




      

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Hi David,

> the bottom row of cv  always  glides from step 8 to step 1 whether glide control is on or off or glide knob is in any position. 

Check that the jumpers are in the same position, top and bottom row, especially 'J1', which looks as though if it is in the wrong position glide will always be on, irrespective of the control level at the glide input. And are you saying that glide is only active when it cycles round from 8 to 1, but is inactive between 1 & 2, 2 & 3 etc.? (Which *would* be a bit odd if that were the case; but it is late here, I was just on the verge of turning in for the night...)

Tim

cheers for reply but yeah unfortunately i checked the jumpers already and i do mean  only from step 8 to step 1 the rest are normal transitions - weird eh?

--- On Wed, 11/3/09, Tim Stinchcombe <timothy@tstinchcombe.freeserve.co.uk> wrote:

From: Tim Stinchcombe <timothy@tstinchcombe.freeserve.co.uk>
Subject: [Doepfer_a100] Re: a-155 repair help needed
To: Doepfer_a100@yahoogroups.com
Date: Wednesday, 11 March, 2009, 10:52 PM











    
            Hi David,



> the bottom row of cv  always  glides from step 8 to step 1 whether glide control is on or off or glide knob is in any position. 



Check that the jumpers are in the same position, top and bottom row, especially 'J1', which looks as though if it is in the wrong position glide will always be on, irrespective of the control level at the glide input. And are you saying that glide is only active when it cycles round from 8 to 1, but is inactive between 1 & 2, 2 & 3 etc.? (Which *would* be a bit odd if that were the case; but it is late here, I was just on the verge of turning in for the night...)



Tim




 

      

    
    
	
	 
	
	








	


	
	


      

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