Doepfer

try inputing/outputing a plug into the audio input jack of the exact same step (as the knob) of the bottom row.


 
Bakis 


________________________________
 From: Janne Gson Berg <tapirkillen@hotmail.com>
To: doepfer_a100@yahoogroups.com 
Sent: Friday, August 24, 2012 4:04 PM
Subject: [Doepfer_a100] Troubleshooting A-155
 

  

Hi everyone!

I have got an A-155 sequencer where one of the pots on the bottom row does not work. At all. 

In order to try to pin down the error I have swapped the ICs from the top row to the bottom row (http://www.doepfer.de/A100_pictures/doepfer_a155.jpg, the two PCBs with the knobs), but the problem was still there. Is there anything else I can do? I have also tried to measure resistance what is happening when turning the pot, but I did not see anything that made the offending pot differ from working pots. 

Is the pot itself broken, or is there anything else I should try to pin down the problem?

Modular regards,

Janne



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